Effects of deep-bedded finishing system on market pig performance, composition and pork quality

摘要: The purpose of this study was to compare effects finishing environment on growth performance, pork quality and lipid composition pork. Environments compared were standard confinement (CON) deep-bedded semi-outdoor systems. method employed in the current use hoop structures. Hoops are large, tent-like shelters with cornstalks or straw for bedding. Gilts ranging weight from 59 71 kg randomly assigned treatments Hoop (n = 50) CON 18) environments. fed a two-phase dietary sequence, ad libitum 45 days. Six gilts per treatment selected carcass evaluation. experiment replicated total five times. Pigs raised gained significantly less required more feed than pigs environment. Carcasses CON-finished fatter at 10th rib, which lowered percentage fat-free lean(FFL) they also had greater loin marbling scores carcasses Hoop-finished (P < 0.05). Significant replication noted beginning weight, live FFL, backfat, content adipose firmness. lower proportions palmitic acid 0.05), higher oleic linoleic 0.05) inner layer tissue. proportion saturated fatty lower, that mono- poly-unsaturated tissue pigs. Variations deposition may have been caused by environmental temperature, since decreases temperature accompanied compositional variation adipose, leading monounsaturated polyunsaturated tissue, regardless treatment. Volatile profile analysis revealed amounts 3-butanal heptanal pigs, be related amount acids composing These data indicate structures allows exposure fluctuating temperatures, influence as well firmness products.