摘要
本试验旨在研究饲粮添加不同剂量酵母多糖对产蛋后期蛋鸡生产性能、免疫功能、血清生化指标和抗氧化能力的影响。选取健康、体重及产蛋率相近的52周龄海兰褐蛋鸡720只,随机分为4个组,每组6个重复,每个重复30只。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加500、1000和1500 mg/kg酵母多糖的饲粮。试验预试期7 d,正试期36 d。结果表明:1)与对照组相比,500和1000 mg/kg酵母多糖组产蛋后期蛋鸡产蛋率有提高的趋势(P=0.063),分别提高了0.73%和4.29%。2)与对照组相比,500、1000和1500 mg/kg酵母多糖组蛋鸡脾脏指数有提高的趋势(P=0.076),分别提高了20.48%、32.53%和18.07%;1000 mg/kg酵母多糖组肝脏指数较对照组以及500和1500 mg/kg酵母多糖组显著提高(P<0.05)。3)1500 mg/kg酵母多糖组蛋鸡血清免疫球蛋白M含量显著高于其他组(P<0.05)。4)与对照组相比,500和1000 mg/kg酵母多糖组蛋鸡血清谷丙转氨酶(ALT)活性和500 mg/kg酵母多糖组血清谷草转氨酶(AST)活性显著降低(P<0.05),试验组血清总胆固醇(TC)含量均显著降低(P<0.05)。5)与对照组相比,500和1000 mg/kg酵母多糖组蛋鸡血清丙二醛(MDA)含量显著降低(P<0.05),1000 mg/kg酵母多糖组血清过氧化氢酶(CAT)活性显著提高(P<0.05),500和1500 mg/kg酵母多糖组血清谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05)。与对照组相比,1000和1500 mg/kg酵母多糖组蛋鸡肝脏MDA含量显著降低(P<0.05);试验组肝脏CAT活性显著提高(P<0.05);1000 mg/kg酵母多糖组肝脏谷胱甘肽(GSH)含量显著提高(P<0.05)。综上所述,产蛋后期饲粮中添加酵母多糖可一定程度上改善蛋鸡生产性能,增强免疫功能,调节脂质代谢,提高机体抗氧化能力,且以添加1000 mg/kg酵母多糖效果较佳。
This experiment was conducted to investigate the effects of different doses of dietary yeast polysaccharide on performance,immune function,serum biochemical indices and antioxidant capacity of laying hens during late laying period.A total of 720 healthy Hy-Line brown laying hens with similar body weight and laying rate at 52 weeks of age were randomly divided into 4 groups with 6 replicates per group and 30 hens per replicate.Hens in the control group were fed a basal diet,and those in the experimental groups were fed the basal diet supplemented with 500,1 000 and 1 500 mg/kg yeast polysaccharide,respectively.The pre-trial period lasted for 7 days,and the trial period lasted for 36 days.The results showed as follows:1)compared with the control group,the laying rate of laying hens in 500 and 1 000 mg/kg yeast polysaccharide groups was increased by 0.73% and 4.29% in late laying period(P = 0.063),respectively.2)Compared with the control group,the spleen index of laying hens in 500,1 000 and 1 500 mg/kg yeast polysaccharide groups was increased by 20.48%,32.53% and 18.07%,respectively(P = 0.076);and compared with the control group and 500 and 1 500 mg/kg yeast polysaccharide groups,the liver index in 1 000 mg/kg yeast polysaccharide group was significantly increased(P < 0.05).3)The serum immunoglobulin M content of laying hens in1 500 mg/kg yeast polysaccharide group was significantly higher than that in other groups(P < 0.05).4)Compared with the control group,the serum alanine aminotransferase(ALT)activity of laying hens in 500and 1 000 mg/kg yeast polysaccharide groups and the serum aspartate aminotransferase(AST)activity in500 mg/kg yeast polysaccharide group were significantly decreased(P<0.05),and the serum total cholesterol(TC)content in experimental groups was significantly decreased(P<0.05).5)Compared with the control group,the serum malondialdehyde(MDA)content of laying hens in 500 and 1 000 mg/kg yeast polysaccharide groups was significantly decreased(P<0.05),the serum catalase(CAT)activity in 1 000 mg/kg
作者
李振慧
吴桂萍
刘龙
赵敏孟
范翔
耿拓宇
龚道清
LI Zhenhui;WU Guiping;LIU Long;ZHAO Minmeng;FAN Xiang;GENG Tuoyu;GONG Daoqing(College of Animal Science and Technology,Yangzhou University,Yangzhou 225600,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2022年第4期2413-2424,共12页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
江苏省农业重大新品种创制项目(PZCZ201731)
2021年度“金山英才”高层次领军人才培养计划学术技术骨干科研项目。
关键词
产蛋后期
酵母多糖
生产性能
免疫
血清生化
抗氧化
late laying period
yeast polysaccharide
performance
immunity
serum biochemistry
antioxidation
