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Ciência Rural
Article . 1995
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Componentes do peso vivo em cordeiros e borregos Polwarth e cruzas Texel x Polwarth Live weight components in Polwarth and Texel x Polwarth lambs and hoggets

Authors: José Carlos Osório; Isidro Sierra; Carlos Sañudo; José Luiz Guerreiro; Pedro Osório Jardim;

Componentes do peso vivo em cordeiros e borregos Polwarth e cruzas Texel x Polwarth Live weight components in Polwarth and Texel x Polwarth lambs and hoggets

Abstract

O estudo teve por objetivo comparar e quantificar o peso vivo ao abate e seus componentes em cordeiros e borregos Polwarth (Ideal) com cruzas de Texel x ovelhas Polwarth. Foram sacrificados 59 cordeiros com 116 dias de idade, sendo 40 Polwarth (21 machos e 19 fêmeas) e 19 cruzas de Texel x ovelhas Polwarth (7 machos e 12 fêmeas) e 24 borregos com 450 dias de idade, sendo 14 Polwarth e 10 cruzas de Texel x ovelhas Polwarth. Os animais foram criados em condições extensivas de campo nativo ao sul do Brasil (Pelotas-RS) e castrados aos 30 dias de idade. Em termos de valores absolutos, para peso vivo e seus componentes, não se detectaram diferenças significativas entre cordeiros puros e cruzas; para borregos, verificou-se que os cruzas apresentaram maiores pesos (peso vivo ao abate, carcaça quente e fria, cabeça, pulmões com traquéia, fígado, gordura renal e pélvica e rins). Em valores percentuais, foram verificados efeitos significativos entre puros e cruzas, somente em cordeiros, para pele e pulmões com traquéia e, um efeito de sexo para patas e fígado. Os resultados evidenciaram que o cruzamento entre ovelhas Polwarth com Texel, para aumento da produção de carne em condições extensivas de campo nativo, é viável em borregos (maior idade e peso) e não para cordeiros.This work was undertaken to compare and quantify live body weight, at slaughter, and its components of Polwarth and Polwarth x Texel (ram) lambs and hoggets. Fifty-nine lambs (116 days old) were slaughtered. From that, forty were Polwarth (21 males and 19 females) and nineteen were Polwarth x Texel cresses (7 males and 12 females). Also, twenty-four hoggets (450 days old) were slaughtered. Fourteen hoggets were Polwarth and ten Polwarth x Texel cresses. The animals were raised under range conditions on native pasture, in seuthem Brazil (Pelotas-RS), and castrated at 30 days eld. There were no significant diferences, in absolute values, for body weight and its components, among purebred lambs and crosses; for hoggets, the crosses have shown higher weights (live body weight at slaughter, warm and cool carcass, head, lungs plus trachea, liver, kidney plus pelvic fat, and kidney). In percentage values, significant effects were observed among rebred and crosses only with lambs for hide and lungs plus trachea and sex effect for legs and liver. The results have shown that the crossbreeding among Polwarth (ewes) and Texel, for the increment of meat production under range conditions, is possible at a later age and weight (hoggets) but not for lambs.

Keywords

sheep, S, Agriculture (General), ovinos, Agriculture, produção de carne, S1-972, meat production, crossbreeding, cruzamento

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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