不同梯度发酵豆粕对育肥猪生长性能、胴体性状及肉品质的影响

试验旨在研究不同梯度发酵豆粕等量替代普通豆粕对育肥猪生长性能、胴体性状及肉品质的影响.采用单因素完全随机试验设计,选择240头初始体重(61.25±2.31) kg的杜×长×大育肥猪,随机分为6组,每组8个重复,每个重复5头猪.对照组育肥猪饲喂玉米-豆粕型基础日粮,5个试验组依次采用5％、7％、9％、11％、13％...

Effect of different gradient fermented soybean meal on growth performance,carcass trait and meat quality of finishing pigs

The experiment studied the effect of different gradient fermented soybean meal replacing ordinary soybean on growth performance, carcass trait and meat quality in finishing pigs. 240 ’Duroc×Landrace×Yorkshire’ finishing pigs with initial weight(61.25±2.31) kg were randomly divided into six groups, with eight replicates in each group and five pigs in each replicate. The control group was fed with corn-soybean meal basal diet, five experimental groups adopted 5%, 7%, 9%,11%, 13% fermented soybean meal to replace ordinary soybean meal in diet. The experimental period was 60 d. The results showed that compared with the control group, the final weight of fattening pigs in each experimental group except group 1 was significantly increased(P<0.05), and the average daily weight gain was extremely increased(P<0.01). The average daily gain in group 1 was significantly increased(P<0.05), the feed to gain ratios in group 1, group 2, group 4 and group 5 were significantly decreased(P<0.05), and the feed to gain ratio in group 3 was extremely decreased(P<0.01). The live weight and carcass weight before slaughter in group 2, group 3, group 4 and group 5 were significantly increased(P<0.05). The backfat thickness was significantly decreased(P<0.05), and the eye muscle area was significantly increased in the three groups(P<0.05). The hydraulic power of group 3 and group 4 was significantly increased(P<0.05), and the drip loss at 24 h was significantly decreased(P<0.05). The cooking loss and muscle shear force in group 3 were significantly decreased(P<0.05).The protein content in the muscle in each experimental group was significantly higher than that in control group(P<0.05).The study indicates that 9% fermented soybean meal equivalent to replace ordinary soybean meal in corn-soybean meal basal diet can improve the growth performance, carcass traits and pork quality of finishing pigs.