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Senes BB, da Cruz VAR, Azevedo HC, Costa RB, de Camargo GMF. Estimation of genetic parameters for reproductive indices in sheep. J Anim Breed Genet 2024. [PMID: 38339987 DOI: 10.1111/jbg.12857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 01/24/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024]
Abstract
This study aimed to estimate two reproductive efficiency indices in sheep based on the ratio between litter weight (at birth and weaning) and dam weight, as well as their genetic parameters. Phenotypic and pedigree data comprising the period from 1990 to 2018 were obtained from the Santa Inês sheep database of Embrapa Tabuleiros Costeiros. For estimation of the genetic parameters of the indices, a repeatability model was applied in single- and two-trait analyses by a Bayesian approach. The mean reproductive efficiency index was 0.069 ± 0.0163 and 0.43 ± 0.0955 at birth and weaning, respectively. These values indicate that, on average, ewes give birth to 69 g of lamb per kg body weight and wean 430 g of lamb per kg body weight. Described here for the first time, the heritability estimate obtained in single- and two-trait analyses was 0.24 for the index based on birth weights and ranged from 0.13 to 0.15 for the index based on weaning weights. The estimates indicate the possibility of genetic gain by selection and are similar to those reported for reproductive traits in sheep, representing an option for selection criterion. The genetic correlation between indices was positive and moderate (0.26). The repeatability estimates were high (0.49 for the birth weight index and 0.71 for the weaning weight index). These values indicate good prediction of future performance with few observations. The weaning weight index might be a good culling criterion of females.
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Affiliation(s)
| | | | - Hymerson Costa Azevedo
- Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA (Brazilian Agricultural Research Corporation) - Embrapa Tabuleiros Costeiros (Embrapa Coastal Tablelands), Aracaju, SE, Brazil
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Molina JCJ, da Silva RS, Bidegain FA, Souza YB, Purdy PH, Blackburn HD, Azevedo HC. Bioclimatic thermal stress indices and their relationships with andrological characteristics in hair rams. Int J Biometeorol 2024; 68:253-261. [PMID: 38036706 DOI: 10.1007/s00484-023-02587-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 09/25/2023] [Accepted: 11/08/2023] [Indexed: 12/02/2023]
Abstract
This study evaluated relationships among reproductive parameters and the bioclimatic indices: temperature and humidity index (THI), equivalent temperature index (ETI), black globe temperature and humidity index (BGTHI), and thermal comfort index (TCI), during the first 45 days of spermatogenesis (SP-45) and during the 15 days of sperm transit through the epididymis (STP-15) that preceded the reproductive assessments (ReA). Such information is useful in determining the optimal breeding season in Northeast Brazil. Santa Inês rams (n = 25) underwent two ReA in three periods of the year (D-P = dry; R-P = rainy and RD-P = rainy/dry transition), and the bioclimatic indices were calculated at the corresponding SP-45 and STP-15 timepoints prior to each ReA. Sperm kinetic parameters in D-P were depressed compared to R-P and RD-P (P < 0.05). The index values had an antagonistic relationship with most parameters and regression analysis demonstrated that the BGTHI and the TCI had a negative association with the progressive motility, curvilinear, straight line, and average path velocities, and a positive association with slow sperm in the ejaculate in SP-45 and STP-15 phases (P < 0.01). Semen quality kinetics is affected throughout the year by the environment and it is apparent that it is impaired in D-P and better in R-P and RD-P seasons. The BGTHI and TCI measured in the sperm production phase classified the environment most coherently and presented better association with the behavior of sperm kinetics.
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Affiliation(s)
- Julio Constantino Jerí Molina
- Federal University of Sergipe - Universidade Federal de Sergipe - UFS Postgraduate Program in Agriculture and Biodiversity - Programa de Pós-graduação em Agricultura e Biodiversidade - PPGAGRI, São Cristóvão, Brazil.
| | - Rebeca Santos da Silva
- Federal University of Sergipe - Universidade Federal de Sergipe - UFS -Postgraduate Program in Animal Science - Programa de Pós-graduação em Zootecnia - PROZOOTEC, São Cristóvão, Brazil
| | - Fabiana Almeida Bidegain
- Federal University of Sergipe - Universidade Federal de Sergipe - UFS -Postgraduate Program in Animal Science - Programa de Pós-graduação em Zootecnia - PROZOOTEC, São Cristóvão, Brazil
| | - Yânca Bizerra Souza
- Brazilian Agricultural Research Corporation - Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA - Embrapa Tabuleiros Costeiros - Embrapa Coastal Tablelands, Avenida Beira Mar, 3250 Jardins, Aracaju, SE, 49025-040, Brazil
| | - Phillip H Purdy
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO, 80521-4500, USA
| | - Harvey D Blackburn
- United States Department of Agriculture (USDA), Agriculture Research Service (ARS), National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO, 80521-4500, USA
| | - Hymerson Costa Azevedo
- Brazilian Agricultural Research Corporation - Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA - Embrapa Tabuleiros Costeiros - Embrapa Coastal Tablelands, Avenida Beira Mar, 3250 Jardins, Aracaju, SE, 49025-040, Brazil
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Blackburn HD, Azevedo HC, Purdy PH. Incorporation of Biotechnologies into Gene Banking Strategies to Facilitate Rapid Reconstitution of Populations. Animals (Basel) 2023; 13:3169. [PMID: 37893893 PMCID: PMC10603745 DOI: 10.3390/ani13203169] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
National animal gene banks that are responsible for conserving livestock, poultry, and aquatic genetic resources need to be capable of utilizing a broad array of cryotechnologies coupled with assisted reproductive technologies to reconstitute either specific animals or populations/breeds as needed. This capability is predicated upon having sufficient genetic diversity (usually encapsulated by number of animals in the collection), units of germplasm or tissues, and the ability to reconstitute animals. While the Food and Agriculture Organization of the United Nations (FAO 2012, 2023) developed a set of guidelines for gene banks on these matters, those guidelines do not consider applications and utilization of newer technologies (e.g., primordial germ cells, cloning from somatic cells, embryo transfer, IVF, sex-sorted semen), which can radically change how gene banks collect, store, and utilize genetic resources. This paper reviews the current status of using newer technologies, explores how gene banks might make such technologies part of their routine operations, and illustrates how combining newer assisted reproductive technologies with older approaches enables populations to be reconstituted more efficiently.
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Affiliation(s)
- Harvey D. Blackburn
- USDA ARS National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO 80521-4500, USA
| | | | - Phillip H. Purdy
- USDA ARS National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO 80521-4500, USA
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Molina JCJ, de Oliveira MB, Costa PHC, Santos EWPD, Correa CB, Azevedo HC. Association between different soy lecithin-based extenders and freezing rates in ram semen cryopreservation. Anim Reprod Sci 2023; 252:107234. [PMID: 37105047 DOI: 10.1016/j.anireprosci.2023.107234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 03/30/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023]
Abstract
The aim of the study was to evaluate the effect of the association between glycine-milk (GM) based extenders made with different concentrations of soy lecithin (SL) and freezing rates (FR) on semen quality after thawing. Pooled semen from rams (n = 12) were diluted in GM extenders with 20% egg yolk (EY-20%) or with different concentrations of SL: 0.5% (SL-0.5%), 1.0% (SL-1.0%), and 2.0% (SL-2.0%). The diluted semen (150 ×106 spermatozoa/0.25 mL) was frozen at three FR of - 10, - 20, and - 60 °C/min, and subsequently thawed and analyzed. Results revealed that EY-20% and SL-2.0% had better kinetic parameters, and showed higher proportions of viable, non-apoptotic, plasma-membrane-intact spermatozoa (A-/PI-) and non-capacitated spermatozoa (F), and had lower acrosome-reacted spermatozoa (AR) in the EY-20% and satisfactory values for SL-2.0% compared to SL-0.5% and SL-1.0% (P < 0.05). The FR at - 20 and - 60 °C/min maintained higher A-/PI- and viable spermatozoa compared to - 10 °C/min. The combination EY-20% and - 60 °C/min showed the highest A-/PI- and F (P < 0.05) and the lowest AR, and it did not differ from the combinations EY-20% at - 20 °C/min and SL-2.0% at - 20 °C/min (P > 0.05). In conclusion, the combination EY-20% and - 60 °C/min, showed the best cryoprotective effects on ram spermatozoa. Changes in spermatozoa after thawing were related to the use of the type of extender, the amounts of the same compound in the extender, and the freezing rates to which they were subjected.
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Affiliation(s)
| | | | - Paulo Henrique Conceição Costa
- Brazilian Agricultural Research Corporation, EMBRAPA, Embrapa Tabuleiros Costeiros, Embrapa Coastal Tablelands, Aracaju, Sergipe, Brazil
| | | | - Cristiane Bani Correa
- Postgraduate Program in Health Sciences, Federal University of Sergipe, Aracaju, Sergipe, Brazil
| | - Hymerson Costa Azevedo
- Brazilian Agricultural Research Corporation, EMBRAPA, Embrapa Tabuleiros Costeiros, Embrapa Coastal Tablelands, Aracaju, Sergipe, Brazil.
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de Oliveira MB, Molina JCJ, Santos da Silva R, Ramos AF, Purdy PH, Azevedo HC. Effects of Cell Concentration During Cryopreservation On the Post-thaw Quality of Santa Inês Ram Sperm. cryo letters 2022. [DOI: 10.54680/fr22610110812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND: Non-surgical artificial insemination techniques for sheep may benefit from larger numbers of sperm in the insemination dose because the ewe's cervix is convoluted and often cannot be traversed with an insemination gun resulting in deposition of the sperm at the os
cervix. OBJECTIVE: To compare a range of sperm concentrations when cryopreserving semen from Santa Inês rams and determine the effects of this on post-thaw quality. MATERIALS AND METHODS: One ejaculate from each ram (n = 10) was diluted to four sperm concentrations to
obtain the following groups: G – 400, G – 800, G – 1200, and G – 1600 x 10 6 sperm/mL. The semen samples were packaged in 0.25 mL straws, cooled to 5 ºC, cryopreserved in liquid nitrogen vapor, thawed in a water bath (40 ºC/20 s), and were analyzed for computerized
kinetics, capacitation and acrosome integrity, and plasma membrane integrity of sperm. RESULTS: The G – 400 treatment resulted in samples with the highest linearity and progressive motion (P < 0.05) and had significantly greater plasma membrane integrity, and lower capacitation
and acrosome reaction rates compared to G-1600 (P < 0.05). Overall, use of the G – 400 treatment resulted in better kinetics, less plasma membrane damage and less early capacitation. However, despite reducing the ejaculate yield and increasing the costs of the semen freezing process,
the G – 800 and G – 1200 treatments make a greater absolute number of sperm with good kinetics, plasma membrane integrity and capacitation status available. CONCLUSION: Ram sperm concentration impacts cryopreservation, and higher concentrations may be advantageous if a single
rtificial insemination protocol is desirable.
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Affiliation(s)
- Matheus Batista de Oliveira
- Universidade Federal de Sergipe (Federal University of Sergipe), Av. Marechal Rondon, São Cristóvãoraph, SE, 490100-000, Brazil
| | - Julio Constantino Jerí Molina
- Universidade Federal de Sergipe (Federal University of Sergipe), Av. Marechal Rondon, São Cristóvãoraph, SE, 490100-000, Brazil
| | - Rebeca Santos da Silva
- Universidade Federal de Sergipe (Federal University of Sergipe), Av. Marechal Rondon, São Cristóvãoraph., SE, 490100-000, Brazil
| | - Alexandre Floriani Ramos
- Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA (Brazilian Agricultural Research Corporation) - Embrapa Recursos Genéticos e Biotecnologia (Embrapa Genetic Resources and Biotechnology), Av. W5 Norte, Brasília,
DF, 70770-917, Brazil
| | - Phillip Hamilton Purdy
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO, 80521-4500, USA
| | - Hymerson Costa Azevedo
- Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA (Brazilian Agricultural Research Corporation) - Embrapa Recursos Genéticos e Biotecnologia (Embrapa Genetic Resources and Biotechnology), Av. W5 Norte, Brasília,
DF, 70770-917, Brazil
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de Oliveira MB, Jeri Molina JC, da Silva RS, Ramos AF, Purdy PH, Azevedo HC. Effects of cell concentration during cryopreservation on the post-thaw quality of Santa ines ram sperm. Cryo Letters 2022; 43:357-367. [PMID: 36629831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Non-surgical artificial insemination techniques for sheep may benefit from larger numbers of sperm in the insemination dose because the ewe cervix is convoluted and often cannot be traversed with an insemination gun resulting in deposition of the sperm at the os cervix. OBJECTIVE To compare a range of sperm concentrations when cryopreserving semen from Santa Ines rams and determine the effects of this on post-thaw quality. MATERIALS AND METHODS One ejaculate from each ram (n = 10) was diluted to four sperm concentrations to obtain the following groups: G-400, G-800, G-1200, and G-1600 x 106 sperm/mL. The semen samples were packaged in 0.25 mL straws, cooled to 5 degree C, cryopreserved in liquid nitrogen vapor, thawed in a water bath (40 degree C per 20 s), and were analyzed for computerized kinetics, capacitation and acrosome integrity, and plasma membrane integrity of sperm. RESULTS The G-400 treatment resulted in samples with the highest linearity and progressive motion (P < 0.05) and had significantly greater plasma membrane integrity, and lower capacitation and acrosome reaction rates compared to G-1600 (P < 0.05). Overall, use of the G-400 treatment resulted in better kinetics, less plasma membrane damage and less early capacitation. However, despite reducing the ejaculate yield and increasing the costs of the semen freezing process, the G-800 and G-1200 treatments make a greater absolute number of sperm with good kinetics, plasma membrane integrity and capacitation status available. CONCLUSION Ram sperm concentration impacts cryopreservation, and higher concentrations may be advantageous if a single artificial insemination protocol is desirable. doi.org/10.54680/fr22610110812.
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Affiliation(s)
- M B de Oliveira
- Universidade Federal de Sergipe, Av. Marechal Rondon, Sao Cristovao, SE, 490100-000, Brazil
| | - J C Jeri Molina
- Universidade Federal de Sergipe, Av. Marechal Rondon, Sao Cristovao, SE, 490100-000, Brazil
| | - R S da Silva
- Universidade Federal de Sergipe, Av. Marechal Rondon, Sao Cristovao, SE, 490100-000, Brazil
| | - A F Ramos
- Empresa Brasileira de Pesquisa Agropecuaria - EMBRAPA - Embrapa Recursos Geneticos e Biotecnologia, Av. W5 Norte, Brasilia, DF, 70770-917, Brazil
| | - P H Purdy
- United States Department of Agriculture (USDA), Agricultural Research Service (ARS), National Animal Germplasm Program, 1111 S. Mason St., Fort Collins, CO, 80521-4500, USA
| | - H C Azevedo
- Empresa Brasileira de Pesquisa Agropecuaria - EMBRAPA - Embrapa Recursos Geneticos e Biotecnologia, Av. W5 Norte, Brasilia, DF, 70770-917; Empresa Brasileira de Pesquisa Agropecuaria - EMBRAPA - Embrapa Tabuleiros Costeiros, 3250, Av. Beira Mar, Aracaju, SE, 49025-040, Brazil.
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Paim TP, Paiva SR, de Toledo NM, Yamaghishi MB, Carneiro PLS, Facó O, de Araújo AM, Azevedo HC, Caetano AR, Braga RM, McManus C. Origin and population structure of Brazilian hair sheep breeds. Anim Genet 2021; 52:492-504. [PMID: 34087001 DOI: 10.1111/age.13093] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/07/2021] [Indexed: 12/01/2022]
Abstract
Brazilian hair sheep constitute a genetic diversity hotspot. These animals are found in the harsh environments of the Brazilian Northwest (semi-arid) region. Genotypes (50K SNP chip) from seven Brazilian sheep breeds (five hair and two coarse wool types) and 87 worldwide breeds were used to test for population structure, admixture and genetic diversity. Moreover, phylogenetic trees evaluating migration events between genetic groups were built. Brazilian Somali, a fat-tailed breed, had a close relationship with East African breeds and clustered distinctly from other Brazilian breeds. Brazilian Blackbelly and Barbados Blackbelly had a close relationship. The Morada Nova breed did not show close relationships with European or African breeds, revealing a single migration event from an Algerian hair breed. Brazilian Fat-tail and Morada Nova share a common ancestor, but the former showed introgressions from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. The Santa Inês breed received a substantial contribution from Brazilian Bergamasca and showed an admixed origin with recent introgressions from other breeds, mainly from Suffolk. Furthermore, Brazilian Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil and should be the focus for ex situ conservation programs. In conclusion, Brazilian hair sheep show an African origin and are characterized by diverse genetic composition, reinforcing the need for conservation of these genetic resources, and at the same time, this highly diverse group has variability that can be used in breeding programs.
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Affiliation(s)
- T P Paim
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, Distrito Federal, 70910-900, Brazil.,Instituto Federal de Educação, Ciência e Tecnologia Goiano, Iporá, Goiás, 76200-000, Brazil
| | - S R Paiva
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, Distrito Federal, 70770-917, Brazil
| | - N M de Toledo
- Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, Distrito Federal, 70910-900, Brazil
| | - M B Yamaghishi
- Embrapa Informática Agropecuária, Campinas, São Paulo, 13083-886, Brazil
| | - P L S Carneiro
- Departamento de Ciências Biológicas, Universidade Estadual do Sudoeste da Bahia, Jequié, Bahia, 45205-490, Brazil
| | - O Facó
- Embrapa Caprinos e Ovinos, Sobral, Ceará, 62010-970, Brazil
| | - A M de Araújo
- Embrapa Meio-Norte, Teresina, Piaui, 64008-780, Brazil
| | - H C Azevedo
- Embrapa Tabuleiros Costeiros, Aracaju, Sergipe, 49025-040, Brazil
| | - A R Caetano
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, Distrito Federal, 70770-917, Brazil
| | - R M Braga
- Embrapa Roraima, Boa Vista, Roraima, 69301-970, Brazil
| | - C McManus
- Instituto de Biologia, Universidade de Brasília, Brasília, Distrito Federal, 70910-900, Brazil
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Chaves MS, Azevedo HC, Luz VB, Ferreira-Silva JC, Barros I, Paiva SR, de Olivera Melo E, de Melo Magalhães Padilha D, de Figueirêdo Freitas VJ, Bartolomeu CC, Lemos Oliveira MA. Occurrence, morphology, and morphometry of follicles containing multiple oocytes in FecG E mutant Santa Inês ewes. Anim Reprod Sci 2021; 226:106690. [PMID: 33561808 DOI: 10.1016/j.anireprosci.2021.106690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 11/16/2022]
Abstract
This study was conducted to characterize the morphology and morphometry of follicles containing multiple oocytes (MOFs) and determine the association with the FecGE mutation in Santa Inês ewes. Based on the genotypes, 65 ewes were characterized as being homozygous wild-type (n = 25; FecG+/+), heterozygous mutant (n = 27, FecG+/E), and homozygous mutant (n = 13, FecGE/E). The variables evaluated were follicle developmental stage, number of oocytes per follicle, morphology, and morphometry of MOFs. The FecGE mutation did not affect the frequency of MOFs (P > 0.05) (3.0 % in FecG+/+; 3.3 % in FecG+/E; and 3.5 % in FecGE/E). The greater viability (P < 0.05) of MOFs was identified in transitory stage of the FecGE/E (95.0 %) and FecG+/E (90.9 %) when compared to the FecG+/+ genotype (73.3 %). Furthermore, the morphology of transitory follicles with two oocytes was the variable and when evaluated was the most reliable determinant for predicting which ewes had an FecGE mutation. In conclusion, the FecGE mutation did not affect the frequency of MOFs. The ewes with FecGE mutation had a greater frequency of morphologically normal MOFs in the transitory stage. Furthermore, the ewes with the FecGE mutation had a greater likelihood of having MOFs containing two morphologically normal oocytes.
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Affiliation(s)
- Maiana Silva Chaves
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife, PE, Brazil
| | - Hymerson Costa Azevedo
- Brazilian Agricultural Research Corporation - Embrapa Tabuleiros Costeiros (Embrapa Coastal Tablelands), Avenida Beira Mar, 3250 Jardins, 49025-040, Aracaju -SE, Brazil.
| | - Valesca Barreto Luz
- University Center Cesmac, Rodovia Divaldo Suruagy, S/N Quadra 4 Lote 4 - Praia do Francês, 57081-350, Marechal Deodoro, AL, Brazil
| | - José Carlos Ferreira-Silva
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife, PE, Brazil
| | - Inácio Barros
- Brazilian Agricultural Research Corporation-Embrapa National Dairy Cattle Research, Street Eugênio do Nascimento, 610 - Dom Bosco, 36038-330, Juiz de Fora, MG, Brazil
| | - Samuel Rezende Paiva
- Brazilian Agricultural Research Corporation-Embrapa/Genetic Resources and Biotechnology, Parque Estação Biológica - PqEB s/nº Avenue W5 Norte, 02372, Brasília, DF, Brazil
| | - Eduardo de Olivera Melo
- Brazilian Agricultural Research Corporation-Embrapa/Genetic Resources and Biotechnology, Parque Estação Biológica - PqEB s/nº Avenue W5 Norte, 02372, Brasília, DF, Brazil; Federal University of Tocantins, Avenue NS-15, Quadra 109, Norte, s/n - Plano Diretor Norte, 77001-090, Palmas, TO, Brazil
| | - Deborah de Melo Magalhães Padilha
- Postgraduate biotechnology, Potiguar University / Laureate International Universities, Avenue Senador Salgado Filho, 1610, Lagoa Nova, Natal, 59056-000, CE, Brazil
| | | | - Cláudio Coutinho Bartolomeu
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife, PE, Brazil
| | - Marcos Antônio Lemos Oliveira
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife, PE, Brazil
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McManus C, Paiva SR, Caetano AR, Hermuche P, Guimarães RF, Carvalho Jr OA, Braga R, Souza Carneiro PL, Ferrugem-Moraes J, De Souza CJH, Faco O, Santos SA, Azevedo HC, De Araujo AM, Façanha DAE, Ianella P. Landscape genetics of sheep in Brazil using SNP markers. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2020.106239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sousa-Junior LPB, Meira AN, Azevedo HC, Muniz EN, Coutinho LL, Mourão GB, Leão AG, Pedrosa VB, Pinto LFB. Variants in myostatin and MyoD family genes are associated with meat quality traits in Santa Inês sheep. Anim Biotechnol 2020; 33:201-213. [PMID: 32633608 DOI: 10.1080/10495398.2020.1781651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Myostatin and MyoD family genes play vital roles in myogenesis and this study aimed to identify association of variants in MyoD1, MyoG, MyF5, MyF6, and MSTN genes with meat traits in Santa Inês sheep. A dataset with 44 variants and records of seven meat traits in 192 lambs (pH0, pH24, a*, b*, L*, tenderness assessed by shear force, and water-holding capacity) was used. Single-locus and haplotype association analyses were performed, and the significance threshold was established according to Bonferroni's method. Single-locus analysis revealed two associations at a Bonferroni level, where the variant c.935-185C > G in MyoD1 had an additive effect (-4.31 ± 1.08 N) on tenderness, while the variant c.464 + 185G > A in MyoG had an additive effect (-2.86 ± 0.64) on a*. Additionally, the haplotype replacement GT>AC in MSTN was associated with pH0 (1.26 ± 0.31), pH24 (1.07 ± 0.27), a* (-1.40 ± 0.51), and tenderness (3.83 ± 1.22 N), while the replacement GT > AG in MyoD1 was associated with pH0 (1.43 ± 0.26), pH24 (1.25 ± 0.22), b* (-1.06 ± 0.39), and tenderness (-4.13 ± 1.16 N). Our results have demonstrated that some variants in MyoG, MyF6, MyoD1, and MSTN can be associated with physicochemical meat traits in Santa Inês sheep.
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Affiliation(s)
| | | | | | | | | | | | - André Gustavo Leão
- Instituto de Ciências Agrárias e Tecnológicas, Universidade Federal de Mato Grosso, Rondonópolis, MT, Brazil
| | - Victor Breno Pedrosa
- Departamento de Zootecnia, Universidade Estadual de Ponta Grossa, Ponta Grossa, PR, Brazil
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Chaves MS, Passos HS, Luz VB, Ferreira-Silva JC, Melo EO, Paiva SR, Bartolomeu CC, Oliveira MAL, Azevedo HC. Evaluation of morphology, morphometry and follicular dynamics in FecGE genotyped ewes. Theriogenology 2019; 136:138-142. [PMID: 31265943 DOI: 10.1016/j.theriogenology.2019.06.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 11/18/2022]
Abstract
This study aimed to evaluate the effect of FecGE mutation on the development of ovarian follicles. To this end, 42 Santa Inês ewes were genotyped for FecGE mutation and classified as wild-type (FecG+/+), heterozygous (FecG+/E) or mutant homozygous (FecGE/E). Ovarian fragments were processed, and the follicles were analyzed with regard to the morphology and morphometry using classical histology. For the evaluation of follicular dynamics, ewes underwent oestrous synchronization and were monitored throughout an interovulatory period. A higher (P < 0.05) percentage of morphologically normal follicles in the primordial stage was identified in FecGE/E (90.0%) and FecG+/E (88.1%) ewes than in the FecG+/+ (73.0%) ewes. There was also a significantly greater (P < 0.05) number of morphologically normal follicles in the FecGE/E (87.3%) and FecG+/E (83.3%) ewes than in FecG+/+ (76.8%) ewes in the transitional stage. A smaller (P < 0.05) diameter was observed in the secondary follicles in FecGE/E (93.8 μm) ewes than in FecG+/E (171.8 μm) ewes. Regarding follicular dynamics, FecGE/E ewes showed a greater (P < 0.05) number of ovulations (2.5 ± 0.2) than FecG+/+ ewes (1.5 ± 0.3) ewes. Ovulatory follicles were smaller (P < 0.05) in the FecGE/E (5.1 mm) and FecG+/E (5.2 mm) ewes than in FecG+/+ (5.8 mm) ewes. Santa Inês nulliparous ewes carrying the FecGE mutation showed a greater proportion of morphologically normal follicles in the primordial and transitional stages than those not carrying the mutation. FecGE/E ewes demonstrated a higher number of ovulated follicles and that FecGE/E and FecG+/E ewes presented ovulatory follicles with a smaller diameter.
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Affiliation(s)
- M S Chaves
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife-PE, Brazil
| | - H S Passos
- Brazilian Agricultural Research Corporation-Tabuleiros Costeiros, Avenue Beira Mar, 3250 - Jardins, 49025-040, Aracaju - SE, Brazil
| | - V B Luz
- University Center Cesmac, Rodovia Divaldo Suruagy, S/N Quadra 4 Lote 4, Praia do Francês, Marechal Deodoro-AL, Brazil
| | - J C Ferreira-Silva
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife-PE, Brazil
| | - E O Melo
- Brazilian Agricultural Research Corporation- Embrapa/Genetic Resources and Biotechnology, Parque Estação Biológica, PqEB s/nº Avenue W5 Norte, 02372, Brasília-DF, Brazil; Federal University of Tocantins, Avenue NS-15, Quadra 109, Norte, s/n - Plano Diretor Norte, 77001-090, Palmas-TO, Brazil
| | - S R Paiva
- Brazilian Agricultural Research Corporation- Embrapa/Genetic Resources and Biotechnology, Parque Estação Biológica, PqEB s/nº Avenue W5 Norte, 02372, Brasília-DF, Brazil
| | - C C Bartolomeu
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife-PE, Brazil
| | - M A L Oliveira
- Reproductive Biotechniques Laboratory, Federal Rural University of Pernambuco, Street Dom Manuel de Medeiros, s/n - Dois Irmãos, 52171-900, Recife-PE, Brazil
| | - H C Azevedo
- Brazilian Agricultural Research Corporation-Tabuleiros Costeiros, Avenue Beira Mar, 3250 - Jardins, 49025-040, Aracaju - SE, Brazil.
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12
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Bandeira AMP, Matos JE, Maria AN, Carneiro PCF, Purdy PH, Azevedo HC. The effects of gelatin supplementation prior to cooling on ram semen quality and fertility. Anim Reprod 2018; 15:23-28. [PMID: 33365091 PMCID: PMC7746216 DOI: 10.21451/1984-3143-ar2017-0021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/22/2018] [Indexed: 11/30/2022] Open
Abstract
The physical and chemical characteristics of gelatin have been used to justify its inclusion in extenders to preserve the sperm quality and improve results of cervical artificial insemination with cooled semen. The objective of this study was to evaluate the effects of gelatin supplementation in cooling extender on the quality and fertility of ram semen stored at 5°C. Semen samples (n = 24) of Santa Inês rams (n = 6) were diluted in Glycine-Yolk-Milk extender without (control) or with 1.5% of gelatin. The samples were loaded into 0.25 mL straws, cooled to 5°C and stored vertically for 48 and 72 hours. Sample quality was evaluated using straw homogeneity tests based on pH, osmolality and the proportion of spermatozoa (PS) in both upper and lower segments of straws (US and LS), analyses of sperm motility, plasma and acrosomal membrane integrity, and by fertility after artificial insemination. Differences between the US and LS of straws were found for pH and PS (%). They were significant only in the control group at both times: pH - 5.96 vs. 5.71 at 48 h and 6.13 vs. 5.89 at 72 h; PS - 21.66 vs. 78.34 at 48 h and 20.87 vs. 79.13 at 72 h. Storage in gelatin had very little, to no effect on the sperm kinetics or on the sperm membrane integrity evaluations. The addition of gelatin to the extender did not affect the pregnancy rate which ranged from 4.4 to 26.1%. We conclude that gelatin is effective in maintaining the physical and chemical homogeneity of the semen samples. Further research is needed in order to optimize the use of gelatin supplementation and elucidate any potential benefits.
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Affiliation(s)
| | | | - Alexandre Nízio Maria
- Embrapa Tabuleiros Costeiros, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA),
,
| | | | | | - Hymerson Costa Azevedo
- Universidade Federal de Sergipe, São Cristóvão,
- Embrapa Tabuleiros Costeiros, Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA),
,
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13
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de Simoni Gouveia JJ, Paiva SR, McManus CM, Caetano AR, Kijas JW, Facó O, Azevedo HC, de Araujo AM, de Souza CJH, Yamagishi MEB, Carneiro PLS, Braga Lôbo RN, de Oliveira SMP, da Silva MVG. Genome-wide search for signatures of selection in three major Brazilian locally adapted sheep breeds. Livest Sci 2017. [DOI: 10.1016/j.livsci.2017.01.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Jucá ADF, Faveri JC, Melo Filho GM, Ribeiro Filho ADL, Azevedo HC, Muniz EN, Pedrosa VB, Pinto LFB. Effects of birth type and family on the variation of carcass and meat traits in Santa Ines sheep. Trop Anim Health Prod 2015; 48:435-43. [PMID: 26701833 DOI: 10.1007/s11250-015-0971-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/07/2015] [Indexed: 11/24/2022]
Abstract
This study aimed to evaluate the effects of birth type and family on quantitative and qualitative meat traits in Santa Ines lambs and to do a descriptive study of variation inside of breed. A total of 50 carcass and meat traits were evaluated in up to 101 lambs slaughtered at 424 days of age. Random effect of family, the fixed effect of birth type (single or double) and year, and the covariates of dam's weight at weaning and age (in days) at slaughter were inserted in the model. This study shows that some carcass and meat traits in Santa Ines raised on pasture has large variability, specially for meat cut yields, several carcass non-components yields, and rib eye area, subcutaneous fat thickness, shear force, cooking losses, and b* color parameter. The birth type effect influenced (P < 0.05) rump width; reticulum, leg, heart and kidney yields; and the carcass pH at 24 h after slaughter. The family effect was significant (P < 0.05) for cold carcass weight; hot, cold and true carcass yields; external carcass and leg lengths; perimeter and width of the rump; kidney, liver and tail yields; and carcass pH at slaughter.
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Affiliation(s)
- Adriana de Farias Jucá
- Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110, Salvador, BA, Brazil
| | - Juliana Cantos Faveri
- Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110, Salvador, BA, Brazil
| | - Geraldo Magalhães Melo Filho
- Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110, Salvador, BA, Brazil
| | - Antônio de Lisboa Ribeiro Filho
- Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110, Salvador, BA, Brazil
| | - Hymerson Costa Azevedo
- Embrapa Tabuleiros Costeiros, Av. Beira Mar, 3250 Jardins, 49025-040, Aracajú, Sergipe, Brazil
| | - Evandro Neves Muniz
- Embrapa Tabuleiros Costeiros, Av. Beira Mar, 3250 Jardins, 49025-040, Aracajú, Sergipe, Brazil
| | - Victor Breno Pedrosa
- Universidade Estadual de Ponta Grossa, Av. General Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, Paraná, Brazil
| | - Luís Fernando Batista Pinto
- Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia, Av. Adhemar de Barros, 500, 40170-110, Salvador, BA, Brazil.
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15
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Maria AN, Carvalho ACM, Araújo RV, Santos JP, Carneiro PCF, Azevedo HC. Use of cryotubes for the cryopreservation of tambaqui fish semen (Colossoma macropomum). Cryobiology 2015; 70:109-14. [PMID: 25725470 DOI: 10.1016/j.cryobiol.2015.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 02/13/2015] [Accepted: 02/16/2015] [Indexed: 01/12/2023]
Abstract
Tambaqui (Colossoma macropomum) is a freshwater fish of great importance to aquaculture in several South American countries. Recent studies have developed a protocol for semen cryopreservation in 0.25 and 0.5 mL straws; however, this technique has limitations for fingerling production at a large scale due to the high fecundity of tambaqui. The main objective of this study was to evaluate the feasibility of using cryotubes (1.6 and 4.5 mL) for tambaqui semen cryopreservation. Semen samples were diluted in freezing solution (5% glucose solution, 10% methylglycol, 5% egg yolk), stored in 1.6 and 4.5 mL cryotubes, frozen in liquid nitrogen vapor at -175°C and transferred to a cryogenic container at -196°C. The cryotubes were thawed in a water bath at 60°C for 70 or 90 s and the motility (total motility - TM; progressive motility - PM; curvilinear velocity - VCL; straight line velocity - VSL and average path velocity - VAP) and the viability of sperm were evaluated. There was no significant difference in sperm motility and viability post-thawing between 1.6 and 4.5m L cryotubes, except for TM (47% and 40%, respectively). Thawing for 90 s provided better results, being used in fertilization trials. Although the fertilization rate did not differ between the cryotubes (41-45%), it was significantly lower than that for fresh semen (74%). A strong positive correlation was observed between the sperm motility and fertilization rate (r=0.69-0.89). We conclude that 1.6 and 4.5 mL cryotubes have high potential for tambaqui semen cryopreservation when thawed for a minimum time of 90 s at 60°C.
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Affiliation(s)
- Alexandre Nizio Maria
- Animal Reproduction Biotechnology Laboratory, Embrapa Coastal Tablelands, Av. Beira Mar 3250, 49025-040 Aracaju, Sergipe, Brazil.
| | | | - Rafael Venâncio Araújo
- Animal Reproduction Biotechnology Laboratory, Embrapa Coastal Tablelands, Av. Beira Mar 3250, 49025-040 Aracaju, Sergipe, Brazil
| | - Jadson Pinheiro Santos
- Animal Reproduction Biotechnology Laboratory, Embrapa Coastal Tablelands, Av. Beira Mar 3250, 49025-040 Aracaju, Sergipe, Brazil
| | - Paulo César Falanghe Carneiro
- Animal Reproduction Biotechnology Laboratory, Embrapa Coastal Tablelands, Av. Beira Mar 3250, 49025-040 Aracaju, Sergipe, Brazil
| | - Hymerson Costa Azevedo
- Animal Reproduction Biotechnology Laboratory, Embrapa Coastal Tablelands, Av. Beira Mar 3250, 49025-040 Aracaju, Sergipe, Brazil
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16
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Bittencourt RF, Oba E, Ribeiro Filho ADL, Chalhoub M, Azevedo HC, Bicudo SD. AVANÇOS NA CRIOPRESERVAÇÃO DO SÊMEN OVINO I: DILUIDORES E CRIOPROTETORES. Ciênc anim bras 2013. [DOI: 10.5216/cab.v14i4.22964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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17
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Carneiro PCF, Azevedo HC, Santos JP, Maria AN. Cryopreservation of tambaqui (Colossoma macropomum) semen: extenders, cryoprotectants, dilution ratios and freezing methods. Cryo Letters 2012; 33:385-393. [PMID: 23224371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The tambaqui is an Amazonian fish of great economic and environmental importance to Brazil and other South American countries. Several semen cryopreservation methodologies have been tested for different Brazilian fish species; however, there is little information on the use of this technique on tambaqui semen. The aim of the present study was to investigate the effect of osmolarity and activation solutions on sperm kinetics and, glucose solutions, cryoprotectants, dilution ratios, egg yolk and freezing methods on tambaqui semen freezing. The osmolarity of 230 mOsm was suitable for simultaneously yielding higher sperm motility (85%) and motility time (54 sec.) and osmolarities above 360 mOsm maintain immobile tambaqui sperm. The tambaqui semen can be successfully cryopreserved when diluted 1:9 in freezing medium composed of 5 percent glucose solution (290 mOsm) with 10 percent methylglycol and 5 percent egg yolk, and frozen directly in a dry shipper container.
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Affiliation(s)
- P C F Carneiro
- Laboratory of Biotechnology of Animal Reproduction, Embrapa Tabuleiros Costeiros, Aracaju, Sergipe, Brazil.
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18
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McManus C, Louvandini H, Paiva SR, de Oliveira AA, Azevedo HC, de Melo CB. Genetic factors of sheep affecting gastrointestinal parasite infections in the Distrito Federal, Brazil. Vet Parasitol 2009; 166:308-13. [DOI: 10.1016/j.vetpar.2009.09.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 09/09/2009] [Accepted: 09/21/2009] [Indexed: 11/30/2022]
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19
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Marchiori PE, Yasuda N, Azevedo HC, Orfão M, Callegaro D, Yamamoto FI, Scaff M. Creutzfeldt-Jakob disease. A survey of 14 patients. Arq Neuropsiquiatr 1996; 54:577-83. [PMID: 9201337 DOI: 10.1590/s0004-282x1996000400005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Creutzfeldt-Jakob disease (CJD) is a transmissible disease of the nervous system causatively related to the presence of an abnormal prion protein, with dementia, myoclonic jerks, and periodic EEG activity. Fourteen patients (7 females and 7 males) ranging from 26 to 76 years of age (median 59 years) were evaluated between 1974 and 1995 at the Neurologic Clinic of São Paulo University School of Medicine. The average duration of the disease was 12 months (3.5-34 months). Early clinical findings were: behaviour changes in 7 patients, dementia in 4, visual disturbances in 4, vertigo in 2, tremor in 9, and dystonia in one. Advanced symptoms were dementia and myoclonus in all patients. Pyramidal tract dysfunction was found in 6, cerebellar ataxia in 2, seizures in 3, nystagmus and vertigo in 4, and peripheral nervous system involvement in 2. Atypical clinical forms were found in 5 patients. Periodic EEG activity was found in 10 patients. Cerebrospinal fluid evaluation showed pleocytosis in 1 patient, higher protein content in 2, and higher gamma globulin level in 2. In 10 patients anatomopathological evidence in the central nervous system confirmed the clinical diagnosis by presenting with status spongiosus. All except one patient presented with the sporadic form of the disease.
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Affiliation(s)
- P E Marchiori
- Neurologic Clinic of the São Paulo University Medical School (FMUSP), São Paulo SP, Brasil
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20
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Azevedo HC, Mendonça LI, Salum PN, Carvalho MS, Nagahashi-Marie SK, Siqueira-Carvalho AA, Cerqueira MA, Reed UC, Levy JA. [Congenital myotonia. Report of 7 patients]. Arq Neuropsiquiatr 1996; 54:595-600. [PMID: 9201340 DOI: 10.1590/s0004-282x1996000400008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Myotonia is the phenomenon of decrease of muscular relaxation rate, after either a contraction or a mechanical or electrical stimulus. Congenital myotonias are hereditary affections and do not present muscular dystrophy. The current trend is to group them as ionic channels diseases, together with the periodic paralysis. The authors accompanied the cases of seven patients, six males and one female, with ages ranging from 16 to 48 years (average 27 years) and onset of symptoms between 1 and 10 years (average 5 years). These patients presented a myotonic phenomenon unleashed by intensive contraction and global muscular hypertrophy. Three patients were diagnosed as cases of Becker type generalized myotonia because they presented a recessive autosomic heredity and/or transient episodes of muscular weakness. Two patients fitted the description of Thomsen congenital myotonia, with a pattern of dominating autosomic heredity and/or absence of weakness episodes or worsening factors for their condition. Two patients presented fluctuating myotonia, which because worse in cold weather or at potassium intake. The clinical diagnosis was confirmed through complementary tests (electroneuromyography, muscle biopsy and DNA study). Each of the patients made use of different drugs, in the search of optimal lessening of their myotonia. There were five reports of amelioration with the use of diphenilhydantoine; one report with the use of carbamazepine; three reports with the use of acetazolamide; one report with the use of a calcium channel blocker; one report with the use of a beta-adrenergic; one report with the use of thiazide; and none with the use of quinidine/procainamide.
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Affiliation(s)
- H C Azevedo
- Clínica Neurológica do Hospital das Clínicas (HC) da Faculdade de Medicina da Universidade de São Paulo (FMUSP), Brasil
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21
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Azevedo HC, Carvalho MS, Nagahashi-Marie SK, Delgado MN, Siqueira-Carvalho AA, Salum PN, Levy JA. [Nemalinic myopathy with intracytoplasmic spheroid bodies: report of a case]. Arq Neuropsiquiatr 1996; 54:114-9. [PMID: 8736155 DOI: 10.1590/s0004-282x1996000100019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The authors report the case of a female patient, 18 years of age, with slowly progressing weakness in upper and lower limbs since childhood. There were no significant antecedents. The neurologic examination showed mild proximal and distal motor deficit with a slight muscular retraction at the level of shoulders, elbows, coxofemural joints, knees and ankles; muscular hypotrophy in the legs and feet; reflexes were present and sensitivity was normal. Creatinephosphokinase showed an increase of one and a half times the normal value. Electroneuromyography: decrease in the amplitude and duration of action potentials and excessive recruitment of motor units, compatible with a primary muscular disease. A muscle biopsy with frozen sections (HE, Gomori, PAS, ATPases, NADH, SDH, acid and alcaline phosphatases, cytochrome oxidase and Oil-red-o) revealed a primary muscular disease characterized by the presence of nemalinic and intracytoplasmic spheroid bodies. Nemalinic bodies have been described with different structural abnormalities of muscle fibers; however, such association is rare. This is the second case report of concomitant occurrence of nemalinic and spheroid bodies.
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Affiliation(s)
- H C Azevedo
- Clínica Neurológica do Hospital das Clínicas da Universidade de São Paulo, Brasil
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