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Souza-Fabjan JMG, Leal GR, Monteiro CAS, Batista RITP, Barbosa NO, Freitas VJF. In vitro embryo production in small ruminants: what is still missing? Anim Reprod 2023; 20:e20230055. [PMID: 38025995 PMCID: PMC10681138 DOI: 10.1590/1984-3143-ar2023-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/18/2023] [Indexed: 12/01/2023] Open
Abstract
In vitro embryo production (IVEP) is an extremely important tool for genetic improvement in livestock and it is the biotechnology that has grown the most recently. However, multiple ovulation followed by embryo transfer is still considered the leading biotechnology for embryo production in small ruminants. This review aimed to identify what is still missing for more efficient diffusion of IVEP in small ruminants, going through the IVEP steps and highlighting the main factors affecting the outcomes. Oocyte quality is essential for the success of IVEP and an aspect to be considered in small ruminants is their reproductive seasonality and strategies to mitigate the effect of season. The logistics for oocyte collection from live females is more complex than in cattle, and tools to simplify this collection system and/or to promote an alternative way of recovering oocytes may be an important point in this scenario. The heterogeneity of oocytes collected from growing follicles in live females or from ovaries collected from abattoirs remains a challenge, and there is a demand to standardize/homogenize the hormonal stimulatory protocols and IVM protocols for each source of oocytes. The use of sexed semen is technically possible, however the low market demand associated with the high costs of the sexing process prevents the routine use of this technique, but its higher availability is an important aspect aiming for greater dissemination of IVEP. New noninvasive approaches for embryo selection are key factors since the selection for transfer or cryopreservation is another difficulty faced among laboratories. Embryo selection is based on morphological traits, although these are not necessarily reliable in predicting pregnancy. Several issues described in this review must be considered by researchers in other to promote the diffusion of IVEP in small ruminants.
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Affiliation(s)
| | - Gabriela Ramos Leal
- Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | | | | | | | - Vicente José Figueirêdo Freitas
- Laboratório de Fisiologia e Controle da Reprodução, Faculdade de Veterinária, Universidade Estadual do Ceará, Fortaleza, CE, Brasil
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El-Halawany N, Kandil OM, Shawky AEMA, Al-Tohamy AF, El-Sayd YA, Abdel-Shafy H, Abou-Fandoud ESI, Abdel-Azeem SN, El-Rahim AHA, Abdoon AS, Michal JJ, Jiang Z. Investigating the effect of GDF9 , BMP15 , BMP6 and BMPR1B polymorphisms on Egyptian sheep fecundity and their transcripts expression in ovarian cells. Small Rumin Res 2018. [DOI: 10.1016/j.smallrumres.2018.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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In vitro culture medium (IVC) supplementation with sericin improves developmental competence of ovine zygotes. Reprod Biol 2016; 16:87-90. [DOI: 10.1016/j.repbio.2015.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 11/15/2015] [Accepted: 11/26/2015] [Indexed: 11/19/2022]
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Crocomo LF, Ariu F, Bogliolo L, Bebbere D, Ledda S, Bicudo SD. In vitro Developmental Competence of Adult Sheep Oocytes Treated with Roscovitine. Reprod Domest Anim 2016; 51:276-81. [PMID: 26890275 DOI: 10.1111/rda.12677] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/19/2016] [Indexed: 11/27/2022]
Abstract
The efficiency of in vitro sheep embryo production is still low compared to that observed in vivo and in other species. In this context, meiotic inhibition strategies emerged as a promising alternative to improve this biotechnology. So, this study aimed to evaluate, for the first time, the effects of roscovitine on in vitro maturation of sheep oocytes and their subsequent embryo development. For this, cumulus-oocyte complexes (COCs) were cultured for 6 h in the presence (Rosco) or absence (Control) of 75 μm roscovitine and, subsequently, in vitro matured (IVM) for 18 h with gonadotropins. At 0 (Immature), 6 and 24 h of culture, the nuclear status of oocytes was evaluated by Hoechst staining. Embryo cleavage and blastocyst formation were recorded 30 h after in vitro fertilization and on day 7 of culture, respectively. Blastocyst quality was evaluated by differential staining. At 6 h, the GV rate in the Rosco treatment (93.8%) was similar to that observed in the Immature oocytes (94.9%) and significantly higher compared to Control (41.3%). After IVM for 18 h, a high and similar proportion of oocytes from Rosco (93.6%) and Control (88.4%) reached the MII stage. In both treatments, approximately 70% of oocytes cleaved and 50% of them developed up to blastocyst. The mean percentage of blastocyst cells, embryoblast, trophoblast and pyknosis did also not differ between Control and Rosco. In conclusion, roscovitine, at the studied experimental conditions, was efficient to reversibly inhibit the meiosis of adult sheep oocytes without detrimental effect on development and quality of the in vitro produced embryos.
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Affiliation(s)
- L F Crocomo
- Institute of Agricultural Sciences, Federal University of Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - F Ariu
- Department of Veterinary Medicine, University of Sassari, Sardegna, Italy
| | - L Bogliolo
- Department of Veterinary Medicine, University of Sassari, Sardegna, Italy
| | - D Bebbere
- Department of Veterinary Medicine, University of Sassari, Sardegna, Italy
| | - S Ledda
- Department of Veterinary Medicine, University of Sassari, Sardegna, Italy
| | - S D Bicudo
- Department of Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine and Animal Science, UNESP, Botucatu, São Paulo, Brazil
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Aghaz F, Hajarian H, Shabankareh HK, Abdolmohammadi A. Effect of sericin supplementation in maturation medium on cumulus cell expansion, oocyte nuclear maturation, and subsequent embryo development in Sanjabi ewes during the breeding season. Theriogenology 2015; 84:1631-5. [PMID: 26411362 DOI: 10.1016/j.theriogenology.2015.08.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 08/23/2015] [Accepted: 08/23/2015] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to evaluate the effect of sericin with different concentrations (0% [control], 0.1%, 0.5%, 1.0%, and 2.5%) added to the IVM medium on cumulus cell expansion, oocyte nuclear maturation, and subsequent embryo development in Sanjabi ewes during the breeding season. The resumption of meiosis was assessed by the frequency of germinal vesicle breakdown and the first polar body extrusion. After IVF with fresh ram semen, presumptive zygotes were cultured 8 days in potassium simplex optimization medium supplemented by amino acids, and the percentages developing to the two-cell and blastocyst stages were measured as the indicators of early embryonic developmental competence. More cumulus-oocyte complexes matured with 0.5% sericin underwent germinal vesicle breakdown and reached metaphase II stage compared with the control cumulus-oocyte complexes matured without sericin (P ≤ 0.05). The present findings indicated that supplementation with 0.5% sericin during the maturation culture may improve the nuclear maturation and the cumulus cell expansion. Furthermore, the percentage of blastocysts obtained from 0.5% and 0.1% sericin (37.8 ± 1.76% and 34.8 ± 1.09%, respectively) was higher (P ≤ 0.05) than that of the control medium (29.60 ± 1.67%). However, addition of 1% and 2.5% of sericin to the IVM medium oocytes had a negative effect on nuclear maturation and cumulus cell expansion. Furthermore, the percentage of cleavage and blastocyst rate was significantly lower in the 1% and 2.5% sericin groups than in the control group. These findings showed that supplementation of IVM medium with 0.5% sericin may improve the meiotic competence of oocytes and early embryonic development in Sanjabi ewes during the breeding season.
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Affiliation(s)
- F Aghaz
- IVF Laboratory, Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran
| | - H Hajarian
- IVF Laboratory, Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran.
| | - H Karami Shabankareh
- IVF Laboratory, Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran
| | - A Abdolmohammadi
- IVF Laboratory, Department of Animal Science, Faculty of Agriculture, Razi University, Kermanshah, Iran
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Effect of Co-Culture with Various Somatic Cells during In Vitro Maturation of Immature Oocytes. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2014. [DOI: 10.12750/jet.2014.29.1.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Padilha LC, Teixeira PPM, Pires-Buttler EA, Apparício M, Motheo TF, Savi PAP, Nakaghi EYO, Alves AE, Vicente WRR. In vitroMaturation of Oocytes from Santa Ines Ewes Subjected to Consecutive Sessions of Follicular Aspiration by Laparoscopy. Reprod Domest Anim 2013; 49:243-8. [DOI: 10.1111/rda.12261] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/04/2013] [Indexed: 11/28/2022]
Affiliation(s)
- LC Padilha
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - PPM Teixeira
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - EA Pires-Buttler
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - M Apparício
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - TF Motheo
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - PAP Savi
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - EYO Nakaghi
- Coordenadoria de Defesa Agropecuária do Estado de São Paulo (CDA/SAA-SP); Jaboticabal SP Brazil
| | - AE Alves
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
| | - WRR Vicente
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal; FCAV; UNESP-Univ Estadual Paulista; Jaboticabal SP Brazil
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AY9944 A-7 promotes meiotic resumption and preimplantation development of prepubertal sheep oocytes maturing in vitro. Theriogenology 2013; 80:436-42. [DOI: 10.1016/j.theriogenology.2013.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/24/2013] [Accepted: 05/04/2013] [Indexed: 11/23/2022]
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Crocomo LF, Filho WCM, Sudano MJ, Paschoal DM, Alvarenga FDCL, Bicudo SD. Effect of roscovitine and cycloheximide on ultrastructure of sheep oocytes. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2012.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kyasari O, Valojerdi M, Farrokhi A, Ebrahimi B. Expression of maturation genes and their receptors during in vitro maturation of sheep COCs in the presence and absence of somatic cells of cumulus origin. Theriogenology 2012; 77:12-20. [DOI: 10.1016/j.theriogenology.2011.07.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 06/21/2011] [Accepted: 07/05/2011] [Indexed: 12/13/2022]
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