The purpose of this experiment was to explore the effects of coated betaine(CBet)on growth per-formance and serum indexes of Pingliang red bull in the late fattening period.A total of 18 healthy red bulls with similar weight(470.78±16.10)kg were randomly divided into 3 groups(control group,test group Ⅰand test group Ⅱ),6 bulls in each group.Among them,the control group was fed a basic diet,the test groupⅠ was fed the basic diet+3.5 g/d CBet,and the test group Ⅱ was fed the basic diet+7.0 g/d CBet.The pre-test period was 7 d and the formal period was 54 d.After the test,the growth performance,serum biochemical indexes and antioxidant function of each group were determined.The results showed as follows:1)the average daily gain(ADG)of Pingliang red bull in test group Ⅰ was significantly higher than that in the control group and test group Ⅱ(P＜0.05),while the feed/gain(F/G)was significantly lower than that in the other two groups(P＜0.05).2)The albumin(ALB),urea nitrogen(UN)contents and superoxide dismutase(SOD)activity in test group Ⅱ of Pingliang red bull serum were significantly higher than those in the control group(P＜0.05),while the contents of triglyceride(TG)and malondialdehyde(MDA)were significantly lower than those in the control group(P＜0.05).3)The serum glucose(GLU)content in the test group Ⅱ was sig-nificantly lower than that in the control group(P＜0.05).In conclusion,the addition of 3.5 g/d CBet to the diet can improve the growth performance in late fattening period of Pingliang red bull,while the addition of 7.0 g/d CBet can improve the serum immunity,antioxidant,fat metabolism and energy metabolism.[Chinese Journal of Animal Nutrition,2024,36(4):2487-2496]
关键词
包被甜菜碱/平凉红牛/育肥后期/生长性能/血清指标
Key words
coated betaine/Pingliang red bull/late fattening period/growth performance/serum index
维普
万方数据