Carcass traits and meat cuts of lambs receiving increasing levels of concentrate

Abstract

-The use of concentrate for sheep grazing Buffel grass may improve the productive performance and carcass traits of animals. The objective of present trial was to evaluate the productive performance and carcass traits of sheep grazing Buffel grass receiving different concentrate levels. The concentrate levels used were: 0; 0.33; 0.66 and 1.0% of dry matter in relation to body weight. Forty lambs were used, ten animals by treatments, with 16.5 ± 2.0 kg of initial body weight and 20.97 kg final body weight, distributed in four groups. The experimental design was a completely randomized with ten replicates by treatments. The concentrate levels did not influence the cold and hot carcass weight. However, the increasing levels of concentrate promoted higher cold and hot carcass yield. Blood, head, hide, heart, lung, kidney and liver (non carcass components) weights and proportion of slaughtered body weight (SBW) and leg, shoulder, brisket, rib, neck and loin weights (commercial meat cuts) were not affected by increasing levels of concentrate. Full intestine in proportion of SBW was lower with the increase of concentrate levels, while the brisket's weight was higher with increase of concentrate.Key words -Buffel grass. Cenchrus ciliaris. Concentrate supplementation.Resumo -O uso de concentrados para ovinos mantidos em pastagens de capim-bufel pode melhorar o desempenho produtivo e os parâmetros de carcaça dos mesmos. O objetivo do presente estudo foi avaliar o desempenho produtivo e os parâmetros de carcaça de ovinos mantidos em pastagens de capim-bufel recebendo doses crescentes de suplemento concentrado. As doses de concentrado utilizadas foram: 0; 0,33; 0,66 e 1,0% na matéria seca do suplemento em relação ao peso corporal dos animais. Foram utilizados 40 cordeiros, dez animais por tratamento, com peso corporal inicial médio de 16,5 ± 2,0 kg e peso final de 20,97 kg, distribuídos em quatro grupos. O delineamento experimental adotado foi o inteiramente casualizado. As doses de concentrado não influenciaram o peso de carcaça quente nem fria. Entretanto, o aumento nas doses de concentrado proporcionou maior rendimento de carcaça quente e fria. O peso e a proporção do peso corporal de abate (PCA) de sangue, cabeça, couro, coração, pulmão, rim e fígado (componentes não carcaça) e o peso e proporção da meia carcaça de pernil, paleta, carré, costela, pescoço e lombo (cortes cárneos comerciais) não foram afetados pelo aumento nas doses de concentrado. O intestino cheio em proporção ao PCA foi menor com o aumento de concentrado, enquanto que o peso do carré aumentou com as maiores doses de concentrado. divided in four paddocks of 1.0 ha. Ten lambs were distributed by paddock. In each week the animals were changed of the paddocks. Palavras-chave -Forty castrated lambs were used (ten by treatment), with initial body weight of 16.5 ± 2.0 kg. The experimental design was a completely randomized with ten replicates by treatments.Petrolina's climate is BSwh' semi-arid, according to Köeppen classification. Climate data regis...

Partial replacement of broom sorghum panicle residue and tallow with whole cottonseed in growing-finishing diets for lambs

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Substitution of soybean meal for urea in diets based on deferred buffelgrass hay for feedlot sheep

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