Open AccessComparison between in vitro embryo production in Bos indicus and Bos taurus cows
Author(s) -
Graziela Alves de Lima Moschini,
D. Gaitkoski,
Ana Beatriz Marques de Almeida,
Myrian Megumy Tsunokawa Hidalgo,
Maria Isabel Mello Martins,
Wanessa Blaschi,
Thales Ricardo Rigo Barreiros
Publication year - 2021
Publication title -
research, society and development
Language(s) - English
Resource type - Journals
ISSN - 2525-3409
DOI - 10.33448/rsd-v10i7.16712
Subject(s) - zebu , breed , biology , zoology , embryo , andrology , oocyte , genetics , medicine
The aim of this study was to evaluate the in vitro embryo production in Bos taurus and Bos indicus donors, evaluating from oocyte recovery to final embryo production. Data were collected during the months of January and February and August to October 2017. Bos taurus cows: Holstein and Senepol and Bos indicus cows: Nelore and Dairy Gir, were used as oocyte donors. In total, 3622 sessions of OPU were performed, divided between: Holstein donors: 925; Senepol donors: 1055; Nelore donors: 1202 and Dairy Gir donors: 440. In total, 103.399 oocytes were recovered, being viable oocytes: 90.807; cleaved: 65.252 and produced embryos: 24216. There was no statistical difference between the genetic groups for the total oocytes recovered (Bos taurus: 25.5 vs. Bos indicus: 30.1; P> 0.05). However, a statistical difference was observed between the cleaved (Bos taurus: 16 vs. Bos indicus: 20.4; P <0.05) and produced embryos (Bos taurus: 4.4 vs. Bos indicus: 8.3; P <0,05). Thus, the conclusion is that Zebu donors perform better in IVEP and the donor breed influences the IVEP results.