Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows
The objective of the current study was to evaluate the effect of lactation on oocyte quality and in vitro embryo production in Gyr (Bos indicus) cows. A total of 187 multiparous cows (92 lactating and 95 non-lactating) were subjected to a single session of follicular aspiration. Follicle puncture wa...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
2023-12-01
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| Series: | Bulgarian Journal of Veterinary Medicine |
| Subjects: |
| _version_ | 1797653358144651264 |
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| author | H. J. Narváez D. Villalba D. A. Vega |
| author_facet | H. J. Narváez D. Villalba D. A. Vega |
| author_sort | H. J. Narváez |
| collection | DOAJ |
| description | The objective of the current study was to evaluate the effect of lactation on oocyte quality and in vitro embryo production in Gyr (Bos indicus) cows. A total of 187 multiparous cows (92 lactating and 95 non-lactating) were subjected to a single session of follicular aspiration. Follicle puncture was per-formed on a random day of the estrous cycle, without prior application of hormonal drugs. The reco¬vered oocytes were subjected to maturation, fertilisation, and in vitro culture. The results indicated that in lactating Gyr cows had the following values of studied variables: number of follicles visualised (22.1±11.38), number of recovered oocytes (17.4±10.21), number of grade III oocytes (7.0±5.86), rate of viable oocytes (72.1±13.11%), number of blastocysts D7 (2.5±2.26) and blastocyst rate (18.3±15.61%), in relation to non-lactating cows (27.7±11.53; 21.1±10.06; 9.8±6.08, 77.4±10.08%; 4.9±3.34; 30.2±15.41%, respectively). In conclusion, the lactation period in Gyr cows affects the performance of in vitro embryo production programmes. |
| first_indexed | 2024-03-11T16:43:29Z |
| format | Article |
| id | doaj.art-988dd5e23501424d91fdd3a015526577 |
| institution | Directory Open Access Journal |
| issn | 1311-1477 1313-3543 |
| language | English |
| last_indexed | 2024-03-11T16:43:29Z |
| publishDate | 2023-12-01 |
| publisher | Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria |
| record_format | Article |
| series | Bulgarian Journal of Veterinary Medicine |
| spelling | doaj.art-988dd5e23501424d91fdd3a0155265772023-10-23T07:25:45ZengFaculty of Veterinary Medicine, Trakia University, Stara Zagora, BulgariaBulgarian Journal of Veterinary Medicine1311-14771313-35432023-12-0126458959610.15547/bjvm.2021-0087Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cowsH. J. Narváez0D. Villalba 1D. A. Vega2Universidad de Santander, Facultad de Ciencias Exactas, Naturales y Agropecuarias, Bucaramanga, ColombiaUniversidad de Santander, Facultad de Ciencias Exactas, Naturales y Agropecuarias, Bucaramanga, ColombiaUniversidad de Santander, Facultad de Ciencias Exactas, Naturales y Agropecuarias, Bucaramanga, ColombiaThe objective of the current study was to evaluate the effect of lactation on oocyte quality and in vitro embryo production in Gyr (Bos indicus) cows. A total of 187 multiparous cows (92 lactating and 95 non-lactating) were subjected to a single session of follicular aspiration. Follicle puncture was per-formed on a random day of the estrous cycle, without prior application of hormonal drugs. The reco¬vered oocytes were subjected to maturation, fertilisation, and in vitro culture. The results indicated that in lactating Gyr cows had the following values of studied variables: number of follicles visualised (22.1±11.38), number of recovered oocytes (17.4±10.21), number of grade III oocytes (7.0±5.86), rate of viable oocytes (72.1±13.11%), number of blastocysts D7 (2.5±2.26) and blastocyst rate (18.3±15.61%), in relation to non-lactating cows (27.7±11.53; 21.1±10.06; 9.8±6.08, 77.4±10.08%; 4.9±3.34; 30.2±15.41%, respectively). In conclusion, the lactation period in Gyr cows affects the performance of in vitro embryo production programmes.bovinein vitro maturationmilk production oocyte competence |
| spellingShingle | H. J. Narváez D. Villalba D. A. Vega Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows Bulgarian Journal of Veterinary Medicine bovine in vitro maturation milk production oocyte competence |
| title | Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows |
| title_full | Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows |
| title_fullStr | Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows |
| title_full_unstemmed | Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows |
| title_short | Effect of lactation on oocyte quality and in vitro embryo production of Bos indicus cows |
| title_sort | effect of lactation on oocyte quality and in vitro embryo production of bos indicus cows |
| topic | bovine in vitro maturation milk production oocyte competence |
| work_keys_str_mv | AT hjnarvaez effectoflactationonoocytequalityandinvitroembryoproductionofbosindicuscows AT dvillalba effectoflactationonoocytequalityandinvitroembryoproductionofbosindicuscows AT davega effectoflactationonoocytequalityandinvitroembryoproductionofbosindicuscows |