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Body composition and net protein and energy requirements for weight gain of crossbred dairy cattle in grazing R. Bras. Zootec.
Andrade,Dulciene Karla Bezerra de; Véras,Antonia Sherlânea Chaves; Ferreira,Marcelo de Andrade; Santos,Mércia Virginia Ferreira dos; Melo,Wellington Samay de; Pereira,Kedes Paulo.
The body composition and net protein and energy requirements for weight gain of 5/8 Hostein-Zebu crossbred cattle raised in Brachiaria decumbens Spaft pasture were evaluated. In total, 16 bulls with 10 months of age and body weight (BW) of 180 ± 19.95 kg were used. The animals were kept with free access to pasture or with restricted grazing (from 6 to 10 h). Four animals were slaughtered at the beginning of the experimental period to estimate the empty body weight (EBW) and the initial body composition of the remaining animals. The other animals were slaughtered at the end of the 84-day trial period. The logarithm equations of the protein and energy body content were adjusted according to the logarithm of the empty body weight EBW. From these equations,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nutritional requirements; Crossbred dairy; Pasture.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000400022
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