Data/hora: 24/06/2024 14:12:11

Biblioteca(s): | Embrapa Gado de Corte.
Data corrente: | 14/03/2002
Data da última atualização: | 15/04/2020
Autoria: | FERRAZ FILHO, P. B.; RAMOS, A. M.; SILVA, L. O. C.; SOUZA, J. C.; ALENCAR, M. M.
Afiliação: | UNESP / FCA /DPEA.
Título: | Environmental and genetic effects influencing pre and post-weaning growth of Tabapua cattle in Brazil.
Ano de publicação: | 2001
Fonte/Imprenta: | Archives of Veterinary Science, Curitiba, v.6, n.2, p.19-30, 2001.
Idioma: | Inglês
Notas: | CNPGC.
Conteúdo: | Data on 11505 animals of the Tabapua cattle breed, born from 1975 to 1995, in 71 herds distributed in six states of Brazil, were analyzed to study the effects of  environmental factors on'them  and to estimate the heritabilities of body weights at 205 (W205), 365 (W365) and 550 (W550) days of age. The mathematical model used in the  analyses of variance included the fixed  effects of sex, year and month  of birth, farm (herd) and age of the dam as a covariable, and the randon effects of sire. The variance components were estimated using the  least squares procedure. The estimated menas for  W205, W365 and W550 were 159.67+-1.06, 222.42 +- 1.48 and 285,39 +- 2.29kg, respectively. The males were, on the average, heavier than the females. The differences among years, mnths and fams were quite evident for three traits. The age of the dam at calving affected only W205 and W365, with maximum weights at 8.0 and 6.3 years, respectively. The heritability estimates and their  standard-errors were equal to 0,20 +- 0,03 (W205), 0,33 +- 0,03 (W365) and 0,24 +- 0,03 +- 0,03 (W550).
Palavras-Chave: | Bovino de corte; Brasil; Melhoramento genetio; Tabapua.
Thesagro: | Desmama; Peso.
Thesaurus Nal: | animal breeding; beef cattle; Brazil; weaning; weight.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Corte (CNPGC)
Exemplares: | CNPGC - (9026-1) - UPC - AP - -- - 636.08905 -  -  - DIS