| Registro completo |
| Provedor de dados: |
PAB
|
| País: |
Brazil
|
| Título: |
Hormonal protocols for in vitro production of Zebu and taurine embryos
|
| Autores: |
Fernandes,Carlos Antônio de Carvalho
Miyauchi,Tatimara Maria
Figueiredo,Ana Cristina Silva de
Palhão,Miller Pereira
Varago,Fabiana Cristina
Nogueira,Ester Siqueira Caixeta
Neves,Jairo Pereira
Miyauchi,Tochimara Aparecida
|
| Data: |
2014-10-01
|
| Ano: |
2014
|
| Palavras-chave: |
Bos indicus
Bos taurus
Artificial insemination
Follicle growth induction
Follicular wave synchronization
FSH stimulation
|
| Resumo: |
The objective of this work was to evaluate the effects of hormonal synchronization protocols, associated or not with follicular development stimulation, on the recovery of oocytes and on in vitro production of Bos indicus and B. taurus embryos, in different seasons. Ultrasound-guided follicular aspirations (n=237) were performed without pre-treatment (G1, control group) and after follicular wave synchronization (G2), or after follicular wave synchronization and follicle growth induction (G3). Bos indicus produced more oocytes and embryos than B. taurus (18.7±0.9 vs. 11.9±0.6 oocytes and 4.8±0.3 vs. 2.1±0.2 embryos). On average, oocyte and embryo yields were higher in G3 than in G2, and both were greater than in G1, which lead to a higher conversion of oocytes to embryos in these treatments. The hot or the cold season did not affect the B. indicus outcomes, whereas, in B. taurus, both oocyte recovery and embryo production were higher in the cold season. Follicular wave synchronization improves ovum pick-up and in vitro production of embryos in both cattle subspecies evaluated.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014001000813
|
| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
|
| Relação: |
10.1590/S0100-204X2014001000008
|
| Formato: |
text/html
|
| Fonte: |
Pesquisa Agropecuária Brasileira v.49 n.10 2014
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
