Viabilidade técnica de parto gemelar em fêmeas da raça Nelore
| Autor: | Cavalieri, Fabíola dos Santos Ramos |
|---|---|
| Přispěvatelé: | Luiz Paulo Rigolon, Carlos Maia Betini, Tatiana Carlesso dos Santos - UEM |
| Jazyk: | portugalština |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) Universidade Estadual de Maringá (UEM) instacron:UEM |
| Popis: | The experiment was development at the JR farm in the period from 01 May 2007 to 07 February 2008. 93 Nellore cows were used, where ten animals from embryo donors and 83 recipients. The donor cows were synchronized with the insertion of an implant and four days after the animals were superovulated with 250 IU of FSH and the recipients cows were inseminated at fixed time on the same day from donors. Seven days after insemination the embryos were collected from donors and transfers in 83 recipients cows. The pregnancy rate was 75.50% (63/83), of which 58.73% (37/63) were to single birth, 34.92% (22/63) were twin birth and 6.35% of birth were triple birth (4/63). There was no difference among the abortions rate, stillborn rate, retained placenta rate and dystocia rate in females that calved 01, 02 or 03 calves, but the rate of rejection of the calf by the cow was higher (p 0,05) na taxa de aborto, na taxa de natimorto, na taxa de retenção de placenta e na taxa de parto distócico nas fêmeas que pariram um, dois ou três bezerros. No entanto a taxa de rejeição do bezerro pela vaca foi maior (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|