The effect of yeast selenium on the growth performance,slaughter performance,and serum antioxidant indicators of broiler chickens
The aim of this experiment is to investigate the effects of yeast selenium on the growth performance,slaughter performance,and serum antioxidant indicators of broiler chickens.1600 1-day-old white feathered broiler chickens were randomly divided into 4 groups,with 1 group consisting of 8 replicates and 50 chickens per replicate.The experiment was conducted in two stages:1～21 days and 22～42 days,with 0,0.1,0.2,and 0.4 mg/kg yeast selenium added as the experimental diet.The results showed that after 1～2 days,compared with the control group,the SY group with 0.2 mg/kg significantly increased FBW by 5.59%,ADG by 5.80%,and feed to weight ratio by 5.93%(P＜0.05);From 22 to 42 days,compared with the control group,the SY group with 0.2 mg/kg significantly increased FBW by 4.25%and ADG by 3.62%(P＜0.05);After 1～42 days,compared with the control group,the SY group with 0.2 mg/kg significantly increased ADG by 4.29%and significantly reduced feed to weight ratio by 4.66%(P＜0.05);In addition,SY had no significant effect on the ADFI of broiler chickens throughout the entire stage(P＞0.05).The addition of 0.2 mg/kg SY significantly increased the slaughter rate of broiler chickens(P＜0.05);The addition of 0.2 mg/kg SY significantly increased the breast muscle rate of broiler chickens(P＜0.05);The addition of 0.2 and 0.4 mg/kg SY significantly increased the dripping loss of leg muscles in broiler chickens(P＜0.05);The addition of 0.2 mg/kg SY significantly decreased the brightness of chicken leg muscles(P＜0.05).After 21 days,the T-SOD and GSH Px activities in the serum of broiler chickens were significantly increased(P＜0.05)with the addition of 0.2 and 0.4 mg/kg SY,while the T-AOC ability in the serum of broiler chickens with the addition of 0.2 and 0.4 mg/kg SY was significantly increased(P＜0.05),and the MDA content was significantly reduced(P＜0.05);After 42 days,the serum GSH Px activity of broiler chickens was significantly increased(P＜0.05)with the addition of 0.2 and 0.4 mg/kg SY,while the serum MDA content of broiler chickens with the addition of 0.2 mg/kg SY was significantly reduced(P＜0.05).
万方数据
维普
