The effects of adding complex enzyme preparations to corn and soybean meal based diets on the growth performance,rumen fermentation parameters,and serum biochemical indicators of fattening sheep
Effects of corn and soybean meal diet supplemented with complex enzyme preparations on growth performance,rumen fermentation parameters and serum biochemical parameters of fattening sheep.A total of 144 healthy sheep with average weight(20.78±0.37 kg)were randomly divided into 4 groups with 6 replicates per group and 6 sheep per replicate.They were fed a test diet supplemented with 0,0.3,0.6 and 1.2 g/kg of complex enzyme,respectively,for 100 days,including 7 days of pre-test and 93 days of trial.The results showed that,Compared with the control group,the final weight of meat sheep in 0.6 and 1.2 g/kg MEP groups was significantly increased by 2.90%and 4.17%(P＜0.05),and the average daily gain was significantly increased by 8.29%and 8.42%(P＜0.05),respectively.The ratio of feed to meat was significantly decreased by 4.08%and 4.90%(P＜0.05),respectively.In addition,MEP had no significant effects on initial weight and feed intake of mutton sheep(P＞0.05).Compared with the control group,the serum GLU,TP and Alb contents of meat sheep in 0.6 and 1.2 g/kg MEP groups were significantly increased(P＜0.05);Serum UN content of meat sheep in 1.2 g/kg MEP group was significantly decreased(P＞0.05).Serum T-AOC capacity of meat sheep in 1.2 g/kg MEP group was significantly increased(P＜0.05);In addition,MEP had no significant effects on serum TG and TC contents,LDH,ALP activities and MDA contents of meat sheep(P＞0.05).Rumen pH of meat sheep in 0.6 and 1.2 g/kg MEP groups was significantly decreased(P＜0.05);Ruminal acetic acid and butyric acid contents of meat sheep in 0.6 and 1.2 g/kg MEP groups were significantly increased(P＜0.05);Rumen total volatile fatty acid content of meat sheep in 1.2 g/kg MEP group was significantly increased(P＜0.05);Rumen microbial protein content of meat sheep in 0.6 and 1.2 g/kg MEP groups was significantly increased(P＜0.05);In addition,MEP had no significant effects on rumen contents of ammonia nitrogen,butyric acid,valeric acid,isobutyric acid and isovaleric acid(P＞0.05).Conclusion:0.6 and 1.2 g/kg MEP can improve rumen fermentation parameters and serum biochemical parameters of meat sheep fed corn soybean meal diet to promote the growth of meat sheep.Considering the overall cost,it is recommended to add 0.6 g/kg MEP to fattening sheep.
万方数据
维普
