The purpose of this study was to investigate the effects of replacing whole-plant corn silage with millet yellow silage on growth performance,serum biochemical indicators,antioxidant indicators and economic benefits of Simmental crossbred cattle.Thirty-six Simmental crossbred bulls were randomly divided into 4 groups with 9 bulls per group,the control group was fed with total mixed diet,and and the experimental groups were fed with 10％,30％and 50％millet yellow silage instead of whole corn silage.The experiment lasted for 75 days.The results showed as follows:(1)There were no significant differences in initial body weight,final body weight,average daily gain and feed/gain among all groups(P＞0.05).(2)The serum urea nitrogen content of western hybrid cattle in experimental groups was significantly lower than that in control group(P＜0.05);The activity of glutathione peroxidase in the 10％and 50％millet yellow silage substitution groups was significantly increased by 10.93％and 11.68％compared with the control group(P＜0.05);The content of serum malondialdehyde in the 50％replacement group was 11.18％lower than that in the control group(P＜0.05).(3)During the 60 day fattening period,the total profit of the 30％substitution group was the highest,72 yuan and 138 yuan higher than the 10％and 50％substitution groups,respectively.In conclusion,replacing whole corn silage with millet yellow silage in diet had no effect on growth performance and serum biochemical indices of Simmental crossbred cattle,replacing 50％could improve antioxidant capacity of Simmental crossbred cattle,and replacing 30％had the highest fending benefit.
维普
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