Effect of gender on growth performance, carcass traits and meat quality of calves of Avileña-Negra Ibérica breed
Abstract
The objective of this experiment was to study the effect of gender on growth performance and carcass and meat quality of calves of Avileña-Negra Ibérica breed. Sixteen calves, eight males and eight females, were used. The calves were fattened under intensive conditions, housed in confinement and fed with the same feed and cereal straw from 230.7 to 478.3 kg. The males grew more than the females (1.390 vs 0.932 kg day–1 respectively). Carcass weight, carcass length, leg length, leg perimeter, carcass and leg compactness, legs, fore-quarters and loins weights and forequarters percentage regarding carcass weight were higher (p < 0.05) in males than in females. The gender had not significant influence on CIE a*, b*, chroma and hue variables but CIE L* value was significantly (p < 0.05) lower in males than in females. The a* value decreased and b* and hue values increased with ageing time. The subcutaneous backfat from the females had significantly (p < 0.05) higher C14:0, C16:0, C16:1, C18:1 n-9, Σ MUFA and lower C10:0, C18:0, C18:2 n-6, C18:3 n-3, C20:0, C20:3 n-9, C20:4 n-6, C22:5 n-3, Σ n-6, Σ n-3 and Σ PUFA proportions than that from males. It is concluded that the gender has influence on growth performance, carcass traits and fatty acid composition of subcutaneous backfat; gender does not have effect on instrumental colour variables; and meat colour can reach acceptable values for consumers until four days after slaughter.Downloads
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