Data/hora: 06/06/2024 02:22:57

Provedor de dados: 	96	
País: 	Brazil	
Título: 	Effect of short period feed supplementation during early lactation on performance of cows and calves raised in extensive system	
Autores: 	Brauner,Cássio Cassal; Pimentel,Marcelo Alves; Menezes,Leonardo de Melo; Machado,Jean Pierre Martins; Moraes,José Carlos Ferrugem.	
Data: 	2011-06-01	
Ano: 	2011	
Palavras-chave: 	Milk yield; Post-calving performance; Supplementation.	
Resumo: 	Thirty-two multiparous Angus cows at moderate body condition score (3 in a 1-5 scale) received feed supplementation at the beginning of lactation for a short time to determine the effect on milk yield and composition and on performance of cows and calves. Supplementation started on days 22 ± 3.2 after calving. The cows were randomly distributed into two groups (n =16), one group receiving feed supplementation for 35 days (supplemented group), and the other without supplementation (control group). Each cow received 0.6% of its body weight in individual troughs daily. Both groups were kept in native pasture condition during supplementation period. Milk yield evaluation, performance of cows and calves were controlled on day 0 (initial), day 14 (middle) and day 35 (final) of the supplementation period. There was no effect of feed supplementation on milk yield or on any other milk component in both groups, and on calf performance as well. Milk composition differed among periods, when fat was the highest in the middle of supplementation and lactose was the highest in the end of the period. Supplemented cows presented more daily average weight gain at the final period of supplementation than cows from the control group. Beef cow with moderate body condition score can gain weight during the lactation period as a response to increase of energy availability in a short period without any influence on milk production and composition as well as a consequence on calf performance.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600029	
Editor: 	Sociedade Brasileira de Zootecnia	
Relação: 	10.1590/S1516-35982011000600029	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Zootecnia  v.40 n.6 2011	
Fonte: 	info:eu-repo/semantics/openAccess