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vol.39 issue6Performance and carcass characteristics of Santa Inês pure lambs and crosses with Dorper e Texel at different management systemsIn situ digestibility and ruminal kinetics of steers receiving protein supplementation on pasture author indexsubject indexarticles search
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Revista Brasileira de Zootecnia

On-line version ISSN 1806-9290


GARCIA, Iraides Ferreira Furusho et al. Carcass characteristics and cuts of Santa Inês lambs fed different roughage proportions and fat source. R. Bras. Zootec. [online]. 2010, vol.39, n.6, pp.1322-1327. ISSN 1806-9290.

This work aimed at determining the influence of roughage proportions and fat source of the diet on characteristics of carcass and comercial cuts of lambs. It was used 24 non-castrated Santa Inês male lambs, ad libitum fed diet with two proportions of roughage (30 and 70%) and fat (no fat, protected fat, and soybean) slaughtered at an avarage body weight of 35.4 kg (± 1.5 kg). Animals fed 30% roughage diet showed the highest weights and carcass yields. The percentages of posterior arm and ham were higher in animals fed 30% roughage with no addition of fat source. Total leg length and internal length were higher in animals fed 70% roughage diet while leg width was higher for those fed 30% roughage diet. Addition of fat source in diets with high percentage of concentrate can increase carcass yields. This effect is higher when protected fat is used regarded to whole soybean. Although diets do not have effect on most of these cuts, the effect on the ham confirms the influence of the diet on this noble cuts.

Keywords : nutrition; ovine meat; performance; protected fat; soy bean.

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