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Title: Performance and carcass quality in three genetic groups of sheep in Brazil
Authors: Cardoso, Maximiliano Tadeu Memória
Landim, Aline Vieira
Louvandini, Helder
Pimentel, Concepta Margaret McManus
Assunto:: creep feeding
cross-breeding
fattening
lambs
Issue Date: 2013
Publisher: Sociedade Brasileira de Zootecnia
Citation: R. Bras. Zootec.,v.42,n.10,p.734-742,2013
Abstract: Three different genetic groups were evaluated for growth up to slaughter and carcass quality for kill out, commercial cuts, non-carcass components, as well as carcass morphometric measurements. Pure Santa Ines (SI), ½ Ile de France × ½ Santa Ines (I × SI) and ½ Texel × ½ Santa Ines (T × SI) lambs were weighed weekly until they reached predetermined slaughter weight (30, 35, 40 and 45 kg). In both creep feeding and fattening the animals from crosses were superior to the Santa Ines hair sheep in terms of daily weight gain and weaned in less time. Crossbred animals also showed better performance than purebred Santa Ines in terms of commercial cuts and carcass weights. Correlations showed that fat depth and eye muscle area decreased with an increase in morphometric measures, indicating that larger animals are possibly later developing in terms of carcass finishing compared with smaller animals. The optimal slaughter weight is approximately 35 kg.
DOI: https://dx.doi.org/10.1590/S1516-35982013001000007
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