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酵母β-葡聚糖对早期断奶犊牛生产性能和血液生理生化指标的影响 被引量:24

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摘要 试验旨在研究酵母β-葡聚糖对早期断奶犊牛生产性能、血液生理生化指标及部分免疫指标的影响。选取42头新生荷斯坦犊牛,按照日粮中酵母β-葡聚糖添加量的不同随机分为0(对照)、25、50、75、100、200mg/kg6个处理组,每组7头牛,试验全期共56d。结果表明:试验各期及试验全期,75mg/kg组犊牛的平均日增重(ADG)显著大于对照组(P<0.05),而各时期饲料转化率(F/G)也以75mg/kg组显著低于对照组(P<0.05)。与对照组相比,酵母β-葡聚糖50mg/kg组和75mg/kg组显著降低犊牛2分和3分粪便出现的频率(P<0.05)。75mg/kg组可显著降低试验各期血清白蛋白浓度(P<0.05)。50、75、100、200mg/kg组血清中IgG浓度与对照组相比差异显著(P<0.05)。IgM含量也随着β-葡聚糖含量的增加而呈规律性变化,其中试验14d和42d,75mg/kg组IgM含量显著高于对照组(P<0.05)。与对照组相比,试验各期75mg/kg处理组ALP含量较对照组显著提高(P<0.05),试验表明,在早期断奶犊牛日粮中添加75mg/kg的酵母β-葡聚糖可显著提高犊牛日增重、饲料转化率和犊牛免疫能力。
出处 《中国畜牧杂志》 CAS 北大核心 2010年第13期47-51,共5页 Chinese Journal of Animal Science
基金 "十一五"科技支撑计划(2006BAD04A03-03)
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