Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/19137
Tipo: Artigo
Título: Strategies of supplementation of female suckling calves and nutrition parameters of beef cows on tropical pasture
Autor(es): Valente, Eriton Egidio Lisboa
Paulino, Mario Fonseca
Detmann, Edenio
Valadares Filho, Sebastião de Campos
Barros, Livia Vieira
Cabral, Carla Heloisa Avelino
Silva, Aline Gomes
Duarte, Marcio de Souza
Abstract: The performance of female calves in creep feeding under different strategies of supplementation and milk production, intake, and digestibility of grazing Nellore and crossbred cows (Nellore × Holstein) during the dry-rainy transition season were assessed. Forty-four female beef suckling calves, with initial age between 90 and 150 days and average initial body weight of 117.7 ± 4.3 kg, and their respective dams (24 Nellore and 20 crossbred) with average initial body weight of 417.5 ± 8.3 kg, were used. The experimental treatments consisted of: control group—mineral mixture only; strategy 1—supplementation from 112 days prior to weaning (0.375 kg/animal/day); strategy 2—supplementation from 112 days prior to weaning, in increasing amounts of 0.15, 0.30, 0.45, and 0.60 kg/animal/day through the four experimental periods, respectively; and strategy 3—supplementation from 56 days prior to weaning (0.750 kg/animal/day). Calves from strategy 1 had greater (P < 0.05) average daily gain (0.672 kg/day) than control animals (0.582 kg/day) and greater (P < 0.05) efficiency of supplement use than the other groups. Crossbred cows produced more milk than Nellore cows (P < 0.05). Crossbred cows presented greater (P < 0.05) dry matter intake (DMI) than Nellore cows. However, no differences were found (P > 0.05) for nutrient digestibility among genetic types. It can be concluded that strategies of supplementation that present an equitable distribution of supplement provides greater weight gain in suckling female beef calves. Crossbred cows produce more milk and present greater DMI than Nellore cows. There are no differences in the nutrient digestibility between Nellore and Nellore × Holstein crossbred cows.
Palavras-chave: Creep feeding
Digestibility
Nellore
Intake
Performance
Editor: Tropical Animal Health and Production
Tipo de Acesso: Springer Science+Business Media B.V.
URI: https://www.ncbi.nlm.nih.gov/pubmed/22476792
http://www.locus.ufv.br/handle/123456789/19137
Data do documento: 22-Mar-2012
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