The effect of sex and density at housing on productive performance, meat composition and fatty acid profile of pigs slaughtered at 110 kg body weight | Efecto de la densidad en cebo sobreel rendimiento productivo, la composición de la carne y el perfil de ácidos grasos de cerdos sacrificados con 110 kg de peso
2011
Morales, J.I., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Serrano, M.P., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Cámara, L., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Berrocoso, J.D., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | López Bote, C.J., Universidad Complutense de Madrid (España). Dept. de Producción Animal | Loriente, C. | López, J.P. | Mateos, G.G., Universidad Politécnica de Madrid (España). Dept. de Producción Animal
Two hundred and twenty eight crossbred pigs (Large White sires to Landrace x Large White dams) with 61 +/- 2 days of age were used to investigate the effect of gender and density at housing on productive performance, meat quality, and fatty acid profile of fat collected at Gluteus medius level of pigs slaughtered with 110 kg BW. There were four experimental treatments with two genders (gilts and barrows) and two densities at housing (0.84 and 0.76 m2/pig). Each treatment was replicated six times and the space allocation was achieved by varying the number of pigs per pen (ten vs. nine). For the entire experimental period, ADFI and feed-to-gain ratio increased in gilts as the space allowance decreased (2.23 vs. 2.32 kg/day and 2.48 vs. 2.55, respectively) whereas the opposite effect was observed for barrows (2.53 vs. 2.42 kg/day and 2.67 vs. 2.60, respectively; P<0.05 for the interaction). Gilts had less (P<0.05) intramuscular fat content than barrows. Fat from pigs reared at 0.76 m2/pig had more monounsaturated fatty acid content than fat from pigs reared at 0.84 m2/pig. We concluded that gilts and barrows slaughtered at 110 kg BW respond differently to space allocation and that the fatty acid profile of the pigs is affected by house density. The use of different densities at housing might improve production cost under field conditions. Under the indicated management practices, a density at housing of 0.84 m2/pig for gilts and of 0.76 m2/pig for barrows is recommended for pigs slaughtered at 110 kg.
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