Data/hora: 10/06/2024 13:35:21

Provedor de dados: | Ciência e Agrotecnologia
País: | Brazil
Título: | Carcass characteristics of sheep fed with castor bean hulls in replacement of tifton 85 hay
Autores: | Urbano,Stela Antas; Ferreira,Marcelo de Andrade; Dutra Junior,Wilson Moreira; Andrade,Rafael de Paula Xavier de; Siqueira,Michelle Christina Bernardo de; Félix,Sabrina Carla Rodrigues.
Data: | 2013-02-01
Ano: | 2013
Palavras-chave: | Biodiesel; Morphometry; Sheep production; Ricinus comunis L.
Resumo: | Castor bean hulls (CBH), co-products of castor oil extraction, are high in dry matter (DM) and fiber and are emerging as alternative roughage in sheep feed. This could reduce feed costs since other sources of roughage can be more expensive. The effects of replacing Tifton 85 hay with CBH at 0, 33, 66 and 100% in the diet of sheep on the carcass characteristics, weights and yields of retail cuts and carcass measurements were studied. Twenty-eight non-castrated sheep averaging 7 ± 1.4 months of age with an initial weight of 19.5 ± 4.3 kg were slaughtered after 70 days of confinement. There was a linear decline (P ≤ 0.05) in slaughter body weight, empty body weight, hot and cold carcass weight and longissimus muscle area (LMA) as the percentage of dietary CBH increased. A linear decrease (P≤0.05) of the weights of all retail cuts and a quadratic effect (minimum yield of 9.84% with the replacement of 56.9%) of the neck yield were also detected as the percentage of CBH increased. No treatment effects (P &gt; 0.05) on the yield of the other cuts were observed, but there was a linear decline (P ≤ 0.05) in the perimeters of the thorax, leg and rump and the carcass compactness index. Replacing Tifton 85 hay with CBH in sheep diets is not recommended because it decreases the slaughter body weight, cold and hot carcass weight, retail cut weights and morphometric measurements.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100010
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/S1413-70542013000100010
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.37 n.1 2013
Fonte: | info:eu-repo/semantics/openAccess