The effect of protein restriction during the growing period on carcass, meat and fat quality of heavy barrows and gilts
作者： J. Suárez-Belloch , M.A. Latorre , J.A. Guada
DOI: 10.1016/J.MEATSCI.2015.10.006
关键词:
摘要: Nutritional strategies are being researched in pigs to increase fatness and then improve quality of dry-cured products. A total 160 Duroc×(Landrace×Large White) pigs, 50% barrows gilts, were used a trial. During the growing period (73-118d age), four feeds formulated with decreasing levels crude protein (CP; 21.6, 17.7, 14.7 13.5%) achieve 1.10, 0.91, 0.78 0.52% Lysine, respectively. From 118d until slaughter, at 123kg (183, 181, 178 or 192d age, respectively), common diet was provided (17.7% CP 0.91% Lysine). Barrows had fatter carcasses than gilts but intramuscular fat (IMF) proportion similar for both. Dietary restriction promoted wider backfat depth pork higher IMF percentage which more monounsaturated less polyunsaturated. We conclude that during grower improves desirable carcass meat traits intended
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