Effects of adding probiotics to feed on growth performance,serum biochemical and antioxidant indicators in beef cattle
The aim of this experiment is to investigate the effects of adding complex probiotics to the diet on the growth performance,serum biochemical and antioxidant indicators of beef cattle.Sixty healthy and in good condition Simmental crossbred beef bulls were randomly divided into four groups,with three replicates in each group,with five bulls in each replicate.Add 0.5%,1%,and 2%of composite probiotics to the basic diet as the experimental diet.The experiment lasted for a total of 100 days,including 7 days of pre test and 93 days of trial.The experimental results showed that compared with the control group,the final body weight of beef cattle fed with 1%and 2%compound probiotics increased by 2%and 3%,respectively(P＜0.05);The average daily gain of beef cattle fed with compound probiotics increased by 4%,7%,and 12%,respectively(P＜0.05),while the feed to weight ratio decreased by 4%,6%,and 11%,respectively(P＜0.05);The addition of compound probiotics to the diet had no significant effect on the average daily feed intake of beef cattle(P＞0.05).Adding 1%and 2%compound probiotics to the diet significantly reduced the serum triglycerides and total cholesterol content of beef cattle(P＜0.05);In addition,the addition of composite probiotics to the diet did not significantly affect the serum albumin,total protein,globulin,urea nitrogen,and glucose content,as well as the activities of alanine aminotransferase and aspartate aminotransferase in beef cattle(P＞0.05).Adding 1%and 2%compound probiotics to the diet significantly reduced the serum MDA content of beef cattle(P＜0.05);The addition of 1%and 2%compound probiotics to the diet significantly increased T-AOC ability(P＜0.05);The addition of compound probiotics to the diet significantly increased the serum GSH-Px activity of beef cattle(P＜0.05);The addition of compound probiotics to the diet had no significant effect on the serum SOD and CAT activities of beef cattle(P＞0.05).In summary,under the conditions of this experiment,the optimal amount of compound probiotics added to beef cattle feed is 2%.
万方数据
维普
