作 者：
李宁;袁梅;王之盛;万发春;薛白;王立志;康坤;柳思强;彭全辉
单 位：
四川农业大学动物营养研究所四川省牛低碳养殖与安全生产重点实验室;山东省农业科学院畜牧兽医研究所
摘 要：
本试验旨在研究活性干酵母对犊牛生长性能及血清生化、抗氧化和免疫指标的影响。选取50头出生日期相近的新生犊牛(西杂牛♂×犏牛♀),随机分为对照组[(13.28±1.25) kg]和酵母组[(13.10±1.22) kg],每组25个重复,每个重复1头牛。在为期90 d的试验期内,2组犊牛均全程饲喂代乳粉,酵母组在饲喂代乳粉的基础上每头牛添加2 g/d的活性干酵母。10日龄后,2组犊牛自由采食开食料。结果表明:1)酵母组第1～90天平均日增重显著高于对照组(P<0.05),第61～90天平均日采食量显著高于对照组(P<0.05)。2)第60和90天,酵母组血清碱性磷酸酶活性显著低于对照组(P<0.05)。3)第30、60和90天,酵母组血清中超氧化物歧化酶活性显著高于对照组(P<0.05)。4)第30和60天,酵母组犊牛血清免疫球蛋白G含量显著高于对照组(P<0.05)。5)第30天,酵母组血清中白细胞介素-10和肿瘤坏死因子-α含量显著高于对照组(P<0.05);第60天,酵母组血清中白细胞介素-2含量显著高于对照组(P<0.02);第90天,酵母组血清中白细胞介素-2、干扰素-γ和肿瘤坏死因子-α含量显著高于对照组(P<0.05)。综上所述,代乳粉中添加活性干酵母可以提高犊牛平均日增重、抗氧化能力和免疫功能。
译 名：
Effects of Active Dry Yeast on Growth Performance and Serum Biochemical,Antioxidant and Immune Indexes of Calves
作 者：
LI Ning;YUAN Mei;WANG Zhisheng;WAN Fachun;XUE Bai;WANG Lizhi;KANG Kun;LIU Siqiang;PENG Quanhui;Low Carbon Breeding Cattle and Safety Production University Key Laboratory of Sichuan Province,Animal Nutrition Institute,Sichuan Agricultural University;Institute of Animal Husbandry and Veterinary Science,Shandong Academy of Agricultural Sciences;
关键词：
active dry yeast;;calves;;antioxidant capacity;;immune function
摘 要：
The objective of this study was to investigate the effects of active dry yeast on growth performance and serum biochemical,antioxidant and immune indexes of calves. Fifty calves(Simmental crossbred cattle ♂×yak cattle♀ )with similar birthday were selected and randomly divided into control group[(13. 28 ±1.25)kg]and yeast group[(13.10±1.22)kg],each group contained 25 replicates and 1 calf per replicate.During the 90-day experiment period,calves in 2 groups were fed milk replacer,and yeast group were added2 g/d active dry yeast per head based on milk replacer. After 10 days of age,calves in 2 groups were free feeding the starter. The results showed as follows:1)the average daily gain during days 1 to 90 of yeast group was significantly higher than that of the control group(P<0.05),and the average daily feed intake during days61 to 90 was significantly higher than that of the control group(P<0.05). 2)On days 60 and 90,the serum alkaline phosphatase activity of yeast group was significantly lower than that of the control group(P<0.05).3)On days 30,60 and 90,the serum superoxide dismutase activity of yeast group was significantly higher than that of the control group(P<0.05). 4)On days 30 and 60,the serum immunoglobulin G content of yeast group was significantly higher than that of the control group(P<0.05). 5)On day 30,the contents of interleukin-10 and tumor necrosis factor-αin serum of yeast group were significantly higher than those of the control group(P<0.05);On day 60,the serum interleukin-2 content of yeast group was significantly higher than that of the control group(P<0.02);on day 90,the contents of interleukin-2,interferon-γand tumor necrosis factor-αin serum were significantly higher than those of the control group(P<0.05). In conclusion,active dry yeast supplement in milk replacer can improve the average daily weight gain,antioxidant capacity and immune function of calves.[Chinese Journal of Animal Nutrition,2020,32(11):5448-5457]
