Taxa de deposição de tecidos corporais de novilhas Nelore e suas cruzas com Angus e Simental
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Data
2012-04-01
Autores
de Souza, Evaristo Jorge Oliveira
Valadares, Sebastião de Campos
Guim, Adriana
Valadares, Rilene Ferreira Diniz
Paulino, Pedro Veiga Rodrigues
Ferreira, Marcelo de Andrade [UNESP]
Torres, Thaysa Rodrigues
Lage, Josiane Fonseca [UNESP]
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Resumo
The objective of this work was to evaluate deposition pattems of body tissues of Nellore and crossbreed with Angus and Simmental heifers. Fifty seven heifers (19 Nellore, 19 Angus and 19 Simmental) were used, being 12 heifers (four in each genetic group) slaughtered before the beginning of the experiment as the baseline group. Thirty six (twelve in each genetic group) were ad libitun fed with 30 (six in each group) and 50% (six in each group) of dry matter diet in concentrate. The animals were in a completely randomized design, 3x2 factorial (tree genetic group and two diet), with six replicates per treatment. Nine remaining animals were used for a digestibility trial. At the end of the experiment all these animals were slaughtered and its corporal composition determined. The percentage of subcutaneous fat was greater for Angus heifers. Chemical constituents of empty body weight and empty body gain there did not suffer effects of genetic group. The crossing between Nellore and Angus, as well as the level of concentrate improve carcass characteristics and pattern of deposition of body tissues.
Descrição
Palavras-chave
Adipose tissue, Gain composition, Muscle tissue, Animalia
Como citar
Revista Brasileira de Saude e Producao Animal, v. 13, n. 2, p. 344-359, 2012.