| Revista: | Arquivo brasileiro de medicina veterinaria e zootecnia |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000287413 |
| ISSN: | 0102-0935 |
| Autores: | Peixoto, M.G.C.D1 Bergmann, J.A.G2 Fonseca, C.G3 Penna, V.M Pereira, C.S |
| Instituciones: | 1Empresa Brasileira de Pesquisa Agropecuaria, Gado de Leite, Juiz de Fora, Minas Gerais. Brasil 2Universidade Federal de Minas Gerais, Escola de Veterinaria, Belo Horizonte, Minas Gerais. Brasil 3Universidade Federal de Minas Gerais, Instituto de Ciencias Biologicas, Belo Horizonte, Minas Gerais. Brasil |
| Año: | 2006 |
| Periodo: | Ago |
| Volumen: | 58 |
| Número: | 4 |
| Paginación: | 567-574 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | Data on 1,294 superovulations of Brahman, Gyr, Guzerat and Nellore females were used to evaluate the effects of: breed; herd; year of birth; inbreeding coefficient and age at superovulation of the donor; month, season and year of superovulation; hormone source and dose; and the number of previous treatments on the superovulation results. Four data sets were considered to study the influence of donors elimination effect after each consecutive superovulation. Each one contained only records of the first, or of the two firsts, or three firsts or all superovulations. The average number of palpated corpora lutea per superovulation varied from 8.6 to 12.6. The total number of recovered structures and viable embryos ranged from 4.1 to 7.3 and from 7.3 to 13.8, respectively. Least squares means of the number of viable embryos at first superovulation were 7.8 ± 6.6 (Brahman), 3.7 ± 4.5 (Gyr), 6.1 ± 5.9 (Guzerat) and 5.2 ± 5.9 (Nellore). The numbers of viable embryos of the second and the third superovulations were not different from those of the first superovulation. The mean intervals between first and second superovulations were 91.8 days for Brahman, 101.8 days for Gyr, 93.1 days for Guzerat and 111.3 days for Nellore donors. Intervals between the second and the third superovulations were 134.3, 110.3, 116.4 and 108.5 days for Brahman, Gyr, Guzerat and Nellore donors, respectively. Effects of herd nested within breed and dose nested within hormone affected all traits. For some data sets, the effects of month and order of superovulation |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Bovinos, Zootecnia, Reproducción y desarrollo, Cebú, Superovulación, Núcleo MOET, Medio ambiente, Cattle, Cebú |
| Keyword: | Veterinary medicine and animal husbandry, Animal husbandry, Bovines, Reproduction and development, Zebu, Superovulation, MOET nucleus, Environment |
| Texto completo: | Texto completo (Ver HTML) |
