Data/hora: 23/06/2024 17:31:20

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 04/05/1999
Data da última atualização: | 04/05/1999
Autoria: | PIMENTEL, C. A.; DESCHAMPS, J. C.; OLIVEIRA, J. A. F. de; CARDELINO, R.; PIMENTEL, M. A.
Título: | Effects of early weaning on reproductive efficiency in beef cows.
Ano de publicação: | 1979
Fonte/Imprenta: | Theriogenology, v.11, n.6, p.421-427, 1979.
Idioma: | Inglês

Conteúdo:

Six hundred eighty-three mature cows of the Devon, A. Angus and Hereford  breeds were
used to investigate the effect of weaning 90 days after calving on the postpartum  repro- duction ( Anestrus and pregnancy rate ).  The calving period was 90 days, from September to November( Spring 1976 ). The breeding period, also of 90 days, began at the end of the calving period and was from December to February ( Summer 1977 ). The 
calves were separated from their  mothers with a mean age of 90 days for "W" group of cows 200 days for the "S". Early weaning increased overall conception in the 90 days breeding period by 43.07% ( P < .001) and reduced the postpartum anestrus from 60.42% in the "S" group to 13.79% ( diference of 46.63% - P < .001 ) in the " W" group.

Thesagro: | Desmama Precoce; Gado de Corte; Reprodução.
Thesaurus Nal: | beef cattle; early weaning; reproduction.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (38540-1) - ADD - SP - -- - SP4825 -  - 4825 - DIS