1
|
Souza-Fabjan JMG, Oliveira MEF, Guimarães MPP, Brandão FZ, Bartlewski PM, Fonseca JF. Review: Non-surgical artificial insemination and embryo recovery as safe tools for genetic preservation in small ruminants. Animal 2023; 17 Suppl 1:100787. [PMID: 37567658 DOI: 10.1016/j.animal.2023.100787] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 08/13/2023] Open
Abstract
Artificial insemination (AI) and in vivo embryo production (or multiple ovulation and embryo transfer, MOET) programs are both instrumental in accelerating the propagation of genetically and economically superior goats and sheep. The aim of this review was to present the current gestalt of non-surgical AI and embryo recovery (NSER) procedures in small ruminants. Small body size, precluding rectal palpation, and highly limited penetrability of the uterine cervix in ewes are the major reasons for the scarce use of non-surgical assisted reproduction techniques in this species. As a result, AI and embryo recovery techniques in sheep mainly involve laparoscopy or laparotomy (LAP). In does, however, the Embrapa method of AI allows for successful intrauterine deposition of semen, resulting in pregnancy rates from 50 to 80% under field conditions (>3 000 goats inseminated) when frozen-thawed semen is used. After the administration of prostaglandin F2α (PGF2α), non-surgical (transcervical) embryo recovery is also feasible in goats, with the cervical penetration rate approaching 100%. There is a paucity of information on the efficacy of non-surgical AI using frozen semen in sheep, but the results are satisfactory with fresh, cooled, or chilled ram semen. An application of the NSER technique in ewes has greatly improved over the last decade, and cervical penetration rates of ∼90% can be achieved when a hormonal cervical dilation protocol using PGF2α, oxytocin, and/or estradiol ester (e.g., estradiol benzoate) is applied. In some genotypes of sheep, sufficient cervical dilation can be induced without estradiol ester included in the protocol. Several studies indicated that recovery of transferable quality ovine embryos using NSER is comparable to that employing a ventral midline laparotomy, and NSER is evidently a method of choice when animal welfare is concerned. Considering both the number of retrievable embryos and animal well-being, the NSER is a viable alternative for surgical procedures. With further developments, it has the makings of a primary, if not exclusive, embryo recovery technique in small ruminants worldwide.
Collapse
Affiliation(s)
- J M G Souza-Fabjan
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil.
| | - M E F Oliveira
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane, s/n, Cep 14884-900 Jaboticabal, SP, Brazil
| | - M P P Guimarães
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil
| | - F Z Brandão
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil
| | - P M Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Road, Guelph, ON N1G 2W1, Canada
| | - J F Fonseca
- Embrapa Caprinos e Ovinos, Rodovia MG 133, Km 42, Cep 36155000, Coronel Pacheco, MG, Brazil
| |
Collapse
|
2
|
Bruno-Galarraga MM, Fernandez J, Lacau-Mengido IM, Gonzalez-Bulnes A, Gibbons A, Cueto M. A simple method to select high superovulatory responder goats. Theriogenology 2023; 195:187-191. [DOI: 10.1016/j.theriogenology.2022.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
|
3
|
Progestogen supplementation during superovulation leads to higher embryo viability and TGFB1 gene expression in sheep. Anim Reprod Sci 2022; 238:106938. [DOI: 10.1016/j.anireprosci.2022.106938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 12/15/2021] [Accepted: 01/30/2022] [Indexed: 11/22/2022]
|
4
|
Santos JDR, Batista RITP, Ungerfeld R, Taira AR, Espírito Santo CGD, Souza-Fabjan JMG, Fernandes DADM, Balaro MFA, Cosentino IO, Brair VL, Pinto PHN, Carvalho ABDS, Fonseca JFD, Brandão FZ. Hormonal protocol used for cervical dilation in ewes does not affect morphological embryo quality but reduces recovery rate and temporarily alters gene expression. Vet Rec 2021; 190:e1064. [PMID: 34750835 DOI: 10.1002/vetr.1064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 07/04/2021] [Accepted: 10/03/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND Information on the impact of hormonal protocols for cervical dilation on the quality of ovine embryos is scarce. METHODS To compare the quality of embryos after cervical dilation protocol, ewes (n = 64) were allocated into either a treated group (100 μg estradiol benzoate intravenous and 0.12 mg cloprostenol intramuscularly, 12 hours before embryo collection plus 100 iu oxytocin intravenous 15 minutes before the collection procedure) or a control group (saline). Luteal function was analysed using ultrasonography and P4 measurement. Some collected embryos were frozen/thawed for gene expression, others were cultured in vitro, frozen/thawed for gene expression, and the remaining embryos were fixed for the apoptosis test (TUNEL test). RESULTS The treatment reduced fluid (p=0.04) and structure (p=0.03) recovery rates, but the morphological quality, development stage, and apoptosis incidence of the embryos were not affected by treatment. The corpora lutea of the control group had greater blood perfusion (p = 0.002) and greater P4 concentrations at 6, 9, and 12 h after the treatment (p < 0.0001). The expression of BAX, BCL2, PRDX1, and HSP90 genes were not affected by the treatment. However, the embryos in the treated group had fewer NANOG and OCT4 transcripts than control embryos (p = 0.008; p = 0.006, respectively). After culture, there was no difference between the groups in any gene. CONCLUSION The hormonal protocol for cervical dilation reduced the efficiency of embryo collection. In addition, the treatment induced luteolysis and a transient alteration of embryo gene expression, however there were no detectable changes in embryo morphological quality, development stage, or incidence of apoptosis.
Collapse
Affiliation(s)
- Juliana Dantas Rodrigues Santos
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | | | - Rodolfo Ungerfeld
- Departamento de Fisiología, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay
| | - Augusto Ryonosuke Taira
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Caroline Gomes do Espírito Santo
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | | | - Daniel Andrews de Moura Fernandes
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Mário Felipe Alvarez Balaro
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Isabel Oliveira Cosentino
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Viviane Lopes Brair
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Pedro Henrique Nicolau Pinto
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | - Ana Beatriz da Silva Carvalho
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| | | | - Felipe Zandonadi Brandão
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil
| |
Collapse
|
5
|
Figueira LM, Alves NG, Souza-Fabjan JMG, Vergani GB, Oliveira MEF, de Lima RR, Fonseca JF. Ultrasonographic cervical evaluation: A tool to select ewes for non-surgical embryo recovery. Reprod Domest Anim 2020; 55:1638-1645. [PMID: 32959440 DOI: 10.1111/rda.13825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/09/2020] [Indexed: 11/27/2022]
Abstract
This study assessed the cervical ultrasonography mapping as a tool to select donor ewes for non-surgical embryo recovery (NSER). Lacaune ewes had their cervix evaluated by ultrasonography 12 hr after induced oestrus onset (Trial 1, n = 24) or 30 min before NSER (Trial 2, n = 17). Cervical rings were longitudinally evaluated and classified by their degree of misalignment on ultrasonography (DMUS) into: DMUS-1-cervix rectilinear, DMUS-2-intermediate and DMUS-3-highly asymmetrical. For predicting cervical transposing, only DMUS-1 and DMUS-2 were considered suitable. Similar ranking was attributed to degree of misalignment on the cervical map (DMCM 1-3), established immediately before NSER, which was performed at days 6 to 7 after oestrus. In Trial 1, cervical retraction for NSER was not possible only in three ewes classified as DMUS-3 (3/14, 21.4%). No difference (p > .05) was observed in the cervical transposing rates between ewes with different DMUS (ranged from 80% to 100%). In Trial 2, DMUS-1 and DMUS-2 reached 100% of transposing, and the only DMUS-3 ewe has not been transposed. In Trial 1, the prediction performance for successful cervical transposing showed low sensitivity (45%) and no specificity due to a high incidence of false negatives (52%). However, in Trial 2, sensitivity and specificity were both 100%. The DMCM and DMUS were uncorrelated, probably due to cervical stretching required to perform NSER. In conclusion, cervical ultrasound assessment immediately before NSER was more efficient to predict the cervical transposing than at induced oestrus, allowing the classification and selection of ewes eligible for NSER.
Collapse
Affiliation(s)
- Lucas Machado Figueira
- Universidade Federal de Lavras, Lavras, Brazil.,Universidade Federal Fluminense, Niterói, Brazil
| | | | | | | | - Maria Emilia Franco Oliveira
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Jaboticabal, Brazil.,Embrapa Caprinos e Ovinos, Coronel Pacheco, Brazil
| | | | | |
Collapse
|
6
|
Figueira LM, Alves NG, Maia ALRES, Souza-Fabjan JMGD, Batista RITP, Morais MCDC, Lima RRD, Oliveira MEF, Fonseca JFD. Embryo yield and quality are associated with progestogen treatment during superovulation protocol in lactating Lacaune ewes. Theriogenology 2020; 155:132-138. [PMID: 32673848 DOI: 10.1016/j.theriogenology.2020.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/06/2020] [Accepted: 06/07/2020] [Indexed: 10/24/2022]
Abstract
This study assessed the effect of progestogen treatment length on ovarian parameters and embryo yield in superovulated Lacaune ewes collected by nonsurgical embryo recovery. Twenty-three lactating ewes were superovulated 30 d apart using a cross-over design. All ewes received 60 mg of MAP intravaginal sponges for 6 (G-6 group) or 9 (G-9 group) d. A total dose of 133 mg pFSH was given in six decreasing doses (twice a day) starting at 60 h before device removal. Ultrasound examination of the ovaries was performed at the first pFSH injection and one day before embryo recovery, which was performed 6-7 d after the onset of estrus. Embryo recovery was conducted only in ewes that expressed estrus and were mated. There was no difference (P > 0.05) in the total number of follicles between G-6 (15.7 ± 1.0) and G-9 (15.6 ± 0.8) at the time of the first pFSH treatment. The percentage of responding donors with ≥3 corpora lutea (CL; 78.2% [18/23] vs 69.5% [16/23]), mean (±SEM) CL number (7.0 ± 1.2 vs 8.1 ± 1.6), transcervical passage rate (94.4% [17/18] vs 83.3% [15/18], and ova/embryo recovery rate (54.5% [60/110] vs 68.0% [83/122]) were not different (P > 0.05) between the G-6 and G-9 groups. However, the mean number of viable embryos was lower (P < 0.05) in the G-6 group (1.8 ± 0.7) than in the G-9 group. (3.5 ± 1.1). In conclusion, treatment with an intravaginal MAP sponge for 9 d during a superovulation protocol is beneficial for viable embryo yield in Lacaune ewes out of the breeding season.
Collapse
Affiliation(s)
- Lucas Machado Figueira
- Universidade Federal de Lavras - Av. Doutor Sylvio Menicucci, 1001 - Kennedy, CEP 37200-900, Lavras, MG, Brazil; Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Vital Brazil, CEP 24220-000, Niterói, RJ, Brazil
| | - Nadja Gomes Alves
- Universidade Federal de Lavras - Av. Doutor Sylvio Menicucci, 1001 - Kennedy, CEP 37200-900, Lavras, MG, Brazil.
| | - Ana Lucia Rosa E Silva Maia
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Vital Brazil, CEP 24220-000, Niterói, RJ, Brazil
| | | | | | - Maria Clara da Cruz Morais
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Vital Brazil, CEP 24220-000, Niterói, RJ, Brazil
| | - Renato Ribeiro de Lima
- Universidade Federal de Lavras - Av. Doutor Sylvio Menicucci, 1001 - Kennedy, CEP 37200-900, Lavras, MG, Brazil
| | - Maria Emilia Franco Oliveira
- Universidade Estadual Paulista "Júlio de Mesquita Filho, Via Prof. Paulo Donato Castellane s/n, CEP 14884-900, Jaboticabal, SP, Brazil
| | | |
Collapse
|
7
|
Santos JDR, Ungerfeld R, Balaro MFA, Souza-Fabjan JMG, Cosentino IO, Brair VL, Souza CVD, Pinto PHN, Bade ALC, Fonseca JFD, Brandão FZ. Transcervical vs. laparotomy embryo collection in ewes: The effectiveness and welfare implications of each technique. Theriogenology 2020; 153:112-121. [PMID: 32450469 DOI: 10.1016/j.theriogenology.2020.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/27/2020] [Accepted: 05/02/2020] [Indexed: 11/25/2022]
Abstract
This study assessed animal welfare in ewes subjected to transcervical (TC) or laparotomy (LP) embryo collection, and the efficiency of these two techniques. Santa Inês ewes (n = 57) received a protocol for estrus synchronization and superovulation. Cervical dilation protocol was initiated 12 h before embryo collection in all ewes. Depending on the success of cervical passage, the embryos were collected from ewes by either TC or LP. Records were made of physiological (rectal temperature (RT) and heart rate (HR)), endocrine (cortisol concentration), biochemical (glycaemia, total proteins, globulin and albumin concentrations), and behavioral variables. Data were recorded before fasting (BF) and sedation (BS), during (DC) and immediately after embryo collection (IAC), and 1 h (1hAC), 3 h (3hAC), 6 h (6hAC), 12 h (12hAC), 24 h (24hAC), and 48 h (48hAC) after embryo collection. The LP and TC procedures were applied to 22 and 35 ewes (with 100.0% and 94.3% of procedures being successful, respectively). The use of LP took longer than TC (P = 0.007) but was less effective in the recovery of uterine fluid and structures (P = 0.0002 and P = 0.0180, respectively), with no difference in the number of viable embryos recovered per animal. The TC procedure induced a greater RT at DC (P = 0.002) and IAC moments (P < 0.0001). The heart rate was greater in TC than LP in IAC (P = 0.036). On the other hand, HR was greater with LP at 12hAC (P = 0.033) and 24hAC (P = 0.002). There was no interaction between the procedures and time on total proteins, albumin, or globulin concentrations. The TC procedure induced greater glycaemia than LP in IAC (P < 0.0001). LP induced greater serum cortisol concentration than TC at DC, IAC, 1hAC (P = 0.0004; P = 0.0006; P = 0.036, respectively), even though it was greater in the TC than the LP procedure at 3hAC (P = 0.008). In conclusion, the TC embryo collection was more effective than the traditional LP procedure. Although both embryo collection procedures affected ewes' welfare, the TC procedure is probably less stressor than the LP.
Collapse
Affiliation(s)
- Juliana Dantas Rodrigues Santos
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil.
| | - Rodolfo Ungerfeld
- Departamento de Fisiología, Facultad de Veterinaria, Universidad de la República, Lasplaces 11 1550, Montevideo, 11600, Uruguay
| | - Mário Felipe Alvarez Balaro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | | | - Isabel Oliveira Cosentino
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | - Viviane Lopes Brair
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | - Clara Vieira de Souza
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | - Pedro Henrique Nicolau Pinto
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | - Ana Luiza Cunha Bade
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil
| | | | - Felipe Zandonadi Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói, Rio de Janeiro, 24230-340, Brazil.
| |
Collapse
|
8
|
Pinto PHN, Balaro MFA, Saraiva HFRDA, Brair VL, Alfradique VAP, Côrtes LR, Cosentino IO, Souza-Fabjan JMG, Fonseca JFD, Brandão FZ. Successive in vivo embryo production in Santa Inês sheep. ANIMAL PRODUCTION SCIENCE 2020. [DOI: 10.1071/an18740] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Context
In vivo embryo production, also called multiple ovulation and embryo transfer, can accelerate genetic gain, and thus improve animal production. However, there are issues limiting a wider use of this biotechnology in sheep livestock.
Aims
This study aimed to determine (1) whether a previous response to superovulation (SOV) can be used as a criterion to select ewes for in vivo embryo production, (2) whether the intensity of the SOV response (number of corpora lutea, CL) can affect the embryo recovery rate, and (3) whether the number of CL quantified by colour Doppler ultrasonography can be used to calculate the recovery rate.
Methods
Twenty-five Santa Inês ewes underwent SOV three times (SOV1, SOV2 and SOV3), with 200 mg FSH and natural mating. The number of CL after each SOV was determined by laparoscopy and by colour Doppler ultrasonography.
Key results
The number of CL significantly decreased (P < 0.05) after SOV1 (7.5 ± 4.8) to 3.0 ± 5.0 at SOV 2 and 2.2 ± 3.5 at SOV3. Strong correlations were observed between SOV2 and SOV3 in terms of numbers of CL (r = 0.86, r2 = 0.74; P < 0.0001) and viable embryos (r = 0.79, r2 = 0.63; P < 00001). However, no correlations were observed between SOV1 and SOV2 or between SOV1 and SOV3. Recovery rate did not differ with the intensity of the SOV response (≤6, 7–10, >10 CL) or between the methods used to quantify CL.
Conclusions
Ewes did not show the same pattern of response when submitted to successive FSH-based SOV. The intensity of the SOV response did not affect the recovery rate, and the number of CL estimated by colour Doppler ultrasonography can be used to calculate the recovery rate.
Implications
Selecting sheep embryo donors by a previous SOV response is not always feasible. The recovery rate is homogeneous and it is not affected by the intensity of the SOV response. A nonsurgical technique can be used to assess the recovery rate, improving animal welfare in MOET programs.
Collapse
|
9
|
Effect of the Booroola fecundity (FecB) gene on the reproductive performance of ewes under assisted reproduction. Theriogenology 2019; 142:246-250. [PMID: 31711699 DOI: 10.1016/j.theriogenology.2019.10.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/29/2019] [Accepted: 10/31/2019] [Indexed: 11/22/2022]
Abstract
Reproductive traits are important factors in sheep production. The Booroola fecundity (FecB) gene-the first major gene for prolificacy identified in sheep-has a positive effect on ovulation rates and litter size under natural reproductive conditions. However, the effect of the FecB gene on reproductive performance under assisted reproduction, which uses many artificial hormones, remains unclear. In the present study, we evaluated the effect of FecB (BMPR-1B mutation) on reproductive performance under assisted reproduction, and examined offspring body weight at birth and weaning and survival rate at weaning. There were no differences among three genotype groups (homozygous carrier, BB; heterozygous carrier, B+; non-carrier, ++) in terms of estrus detection rate, time to estrus onset, or estrus duration following estrus synchronization (P > 0.05). The pregnancy rates at 60 d were similar among three genotype groups after artificial insemination (P > 0.05). However, the B allele had an additive effect on litter size (one copy resulted in an increase of 0.88 lambs and two copies produced an additional 0.41 lambs; P < 0.01), and increased lambing and fecundity rates (P < 0.01). After multiple ovulation, the average numbers of recovered embryos per ewe were 9.16 ± 0.79, 8.20 ± 0.77, and 8.44 ± 0.61 in the BB, B+, and ++ ewes, respectively (P > 0.05). There were no differences in the fertilization rate or numbers of grade 1-2 embryos among different groups (P > 0.05). The birth and weaning weights of lambs from BB and B+ ewes were lower than those of lambs born from ++ ewes (P < 0.01) owing to the high fecundity. The survival rate of lambs at weaning did not differ among groups (P > 0.05). Our results indicated that the presence of the B allele had an additive effect on litter size after artificial insemination, but it did not influence the parameters of estrus synchronization and multiple ovulation. Furthermore, the higher prolificacy in ewes carrying the B allele was associated with a reduction in offspring body weight at birth and weaning.
Collapse
|
10
|
Montes-Quiroz GL, Sánchez-Dávila F, Domínguez-Díaz D, Vázquez-Armijo JF, Grizelj J, Ledezma-Torres RA, Cervantes-Vega R, Arce-Vázquez N, Garza-Brenner E, Bernal-Barragán H. Influence of eCG and breed on the number of oocytes collected and the production of in vitro embryos of young goats during the reproductive season. Trop Anim Health Prod 2019; 51:2521-2527. [PMID: 31209690 DOI: 10.1007/s11250-019-01972-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/06/2019] [Indexed: 11/25/2022]
Abstract
The objective of this study was to determine the effect of breed and equine chorionic gonadotropin (eCG) on ovarian response and in vitro embryo production from young goats. Thirty-one (12 Alpine, 10 Nubian, and 9 Saanen) were randomly assigned into three treatments of eCG (T1, 0 IU; T2, 500 IU; and T3, 1000 IU). Alpine goats showed the highest amount and largest size of follicles (P = 0.003). The effect of eCG dose 24 h post application was significant (P < 0.05), and was superior in goats undergoing T2. The aspiration rate of cumulus-oocyte complexes (COC) was 34% (P > 0.05), except for percentage of denuded oocytes, which obtained the highest number (P = 0.003) in the Saanen goats. The same difference was found (P = 0.02) in oocytes grade III in T2 and T3, with 42.5 and 37.9% respectively. In vitro embryo production was 80.0% of IVF/cleavage in the Alpine goats (P = 0.003). Embryo production was the greatest for T2 (69.2%; P = 0.004). T3 goats had higher percentage of morula stage (66.6%; P = 0.030). It is concluded that the application of eCG has a significant effect on the ovarian status, and quality and quantity of embryos with a differential response depending on the breed.
Collapse
Affiliation(s)
- Gabriela Lisset Montes-Quiroz
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Fernando Sánchez-Dávila
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico. .,Facultad de Agronomía, Unidad Académica Marín, Laboratorio de Reproducción Animal, Universidad Autónoma de Nuevo León, 66700, Marín, N.L., Mexico.
| | - David Domínguez-Díaz
- Unión Ganadera Regional de Nuevo León, Centro de Biotecnología Reproductiva, General Bravo, N.L., Mexico
| | - José Fernanco Vázquez-Armijo
- Centro Universitario UAEM Temascaltepec, Universidad Autónoma del Estado de México, 51300, Temascaltepec, Mexico
| | - Juraj Grizelj
- Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Rogelio A Ledezma-Torres
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Rubén Cervantes-Vega
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Nestor Arce-Vázquez
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Estela Garza-Brenner
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Hugo Bernal-Barragán
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| |
Collapse
|
11
|
Pinto PHN, Balaro MFA, Souza-Fabjan JMG, Ribeiro LDS, Bragança GM, Leite CR, Arashiro EKN, de Moraes Silva K, Da Fonseca JF, Brandão FZ. Anti-Müllerian hormone and antral follicle count are more effective for selecting ewes with good potential for in vivo embryo production than the presence of FecG E mutation or eCG pre-selection tests. Theriogenology 2018. [PMID: 29524809 DOI: 10.1016/j.theriogenology.2018.02.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study aims to compare four different methods for selecting high responding sheep donors for in vivo embryo production. These methods include a pre-selection eCG test (eCG), antral follicle count (AFC), plasma anti-Müllerian hormone measurement (AMH) and genotyping for the presence of the FecGE mutation (a polymorphism in the GDF9 gene associated with increased ovulation rate). Santa Ines ewe lambs (n = 25) underwent superovulation (SOV) with 800 IU equine chorionic gonadotropin (eCG) and the corpus luteum (CL) count was recorded by laparoscopy after eight days. At the D0eCG, blood samples for AMH and genotyping analysis were collected. Twenty-one days after the end of the eCG test, the same animals underwent SOV with 200 mg of FSH, administered in six decreasing doses, and then naturally mated. Immediately before the beginning of the FSH protocol (D0FSH), and at the moment of the first FSH dose (D9FSH), the AFC was assessed. Plasma AMH was again determined at the D9FSH. After each screening process, animals were classified as having a high (HR), or low (LR), potential of response (using specific thresholds for each method). Then, the ewes' response to SOV and embryo yield for each screening method, classified as HR or LR, were compared. Animals classified as HR by AFC (HRAFC) and by AMH concentration (HRAMH) at the D9FSH, produced more viable embryos than those classified as LRAFC and LRAMH (HRAFC 6.2 ± 3.2 vs LRAFC 2.8 ± 3.0 and HRAMH 6.6 ± 3.6 vs LRAMH 3.0 ± 2.9). Pre-selection tests with eCG and different FecGE genotypes, either heterozygous (+/E) or wild type (+/+), were unable to discriminate HR or LR animals. A tendency (P = 0.06) to have lower plasma AMH was observed in heterozygous FecGE (+/E) ewes. In conclusion, both AFC and plasma AMH can be used to select donor ewes with a higher potential of response for in vivo embryo production.
Collapse
Affiliation(s)
- Pedro Henrique Nicolau Pinto
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil.
| | - Mario Felipe Alvarez Balaro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | | | - Lilian Dos Santos Ribeiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Gláucia Mota Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Ceci Ribeiro Leite
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Eduardo Kenji Nunes Arashiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | | | - Jeferson Ferreira Da Fonseca
- Embrapa Caprinos e Ovinos, Núcleo Regional Sudeste, Rodovia MG 133 Km 42, CEP 36155-000, Coronel Pacheco, MG, Brazil
| | - Felipe Zandonadi Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| |
Collapse
|
12
|
Souza-Fabjan JMG, da Rosa RM, Balaro MFA, Pinto PHN, dos Santos GB, Arashiro EKN, da Fonseca JF, Ungerfeld R, Brandão FZ. Effect of different hormonal combinations on follicular wave emergence and superovulatory response in sheep. Theriogenology 2017; 103:24-29. [DOI: 10.1016/j.theriogenology.2017.07.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 06/06/2017] [Accepted: 07/25/2017] [Indexed: 10/19/2022]
|
13
|
Pinto PHN, Bragança GM, Balaro MFA, Arashiro EKN, dos Santos GB, de Souza GN, Souza-Fabjan JMG, Da Fonseca JF, Brandão FZ. Colour-Doppler ultrasound imaging as a laparoscopy substitute to count corpora lutea in superovulated sheep. Reprod Domest Anim 2017; 53:266-269. [DOI: 10.1111/rda.13089] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 09/04/2017] [Indexed: 11/30/2022]
Affiliation(s)
- PHN Pinto
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| | - GM Bragança
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| | - MFA Balaro
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| | - EKN Arashiro
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| | - GB dos Santos
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| | | | | | | | - FZ Brandão
- Universidade Federal Fluminense; Rio de Janeiro Brazil
| |
Collapse
|
14
|
Balaro M, Brandão FZ, Maia A, Souza-Fabjan J, Cueto MI, Gibbons AE, Fonseca JF. Pre-Selection Test to Identify High Responder Donor Goats. Reprod Domest Anim 2016; 51:386-91. [PMID: 27037619 DOI: 10.1111/rda.12690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 03/03/2016] [Indexed: 11/27/2022]
Abstract
The aim of the study was to evaluate the feasibility of pre-selection of high or low responder does prior to the superovulatory protocols. Twenty Saanen does received 800 IU of equine chorionic gonadotropin (eCG) at the end of long-term progestogen treatment. Fourteen days later, a second progestogen protocol associated with a multiple-dose follicle stimulation hormone (FSH) treatment (5 IU/kg of FSH, in six decreasing doses between days 4 to 6 of the protocol) was administered. Transrectal ultrasound was used to assess the follicular status at the beginning of superovulatory treatments, at the oestrous onset and on the seventh day of the oestrous cycle for counting corpora lutea (CL). A significant lower number of CL was obtained in eCG-treated in comparision with FSH-treated does (p < 0.05). A quartic regression was able to explain the relationship between the number of CL in response to both treatments (r(2) =0.50; p < 0.05). Seventy per cent (14 of 20) of does maintained the same ovulatory response (high or low) after treatments. The Kappa (κ = 0.40; p < 0.05) and Spearman (rs = 0.39; p = 0.08) coefficients were able to show a relationship between treatments. Regarding the follicular status, there is a significant relationship between the number of small follicles (r = 0.71; r(2) =0.47; p < 0.01) and total follicles (r = 0.60; p < 0.01) at eCG and first FSH dose with the number of CL. Moreover, it was found a negative relationship between the presence of large follicles and the number of CL in response to eCG treatment (r = -0.44; p < 0.05), but not from FSH (p > 0.05). In conclusion, the screening test with eCG has the potential to identify Saanen does that will better respond to the superovulatory protocol with FSH. In addition, it highlighted the importance of an ultrasound evaluation prior to the beginning of superovulatory treatments with FSH to characterize the follicular status and identify the potential donors of high ovulatory response in MOET programmes in goats.
Collapse
Affiliation(s)
- Mfa Balaro
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - F Z Brandão
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - Alrs Maia
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - Jmg Souza-Fabjan
- Departamento de Patologia e Clínica Veterinária, Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brazil
| | - M I Cueto
- Instituto Nacional de Tecnologia Agropecuaria, Bariloche, Argentina
| | - A E Gibbons
- Instituto Nacional de Tecnologia Agropecuaria, Bariloche, Argentina
| | - J F Fonseca
- Embrapa Goats and Sheep, Coronel Pacheco, MG, Brazil
| |
Collapse
|