【作者】 魏恒杰；

【导师】 呙于明；

【作者基本信息】 中国农业大学 ， 养殖， 2004， 硕士

【摘要】 选刚181日龄海兰灰产蛋鸡576只，随机分为6个处理，设对照基础日粮组，抗生素组基础日粮+500mg／kg10％杆菌肽锌组，四个酵母细胞壁组，在基日粮的基础上分别添加500、1000、1500、2000mg／kg酵母细胞壁，每个处理6个重复，试验期56天，以研究酵母细胞壁对产蛋鸡生产性能、鸡蛋品质、血清指标的影响。结果显示，产蛋鸡日粮中添加1500mg／kg酵母细胞壁的处理组，产蛋率显著高于对照、500、1000mg／kg酵母细胞壁处理组(P＜0.05)，蛋重显著高于杆菌肽锌处理组、日产蛋量显著高于对照组(P＜0.05)，料蛋比六个处理均没有显著的差异，但以1500mg／kg为最佳。蛋壳强度、蛋壳厚度、哈夫单位、死亡率；血清中的清蛋白、球蛋白、总蛋白的含量，六个处理组均没有显著性差异。 通过本试验可以得出：产蛋鸡日粮添加酵母细胞壁能改善产蛋鸡的生产性能，但对鸡蛋品质、血清蛋白指标没有显著性影响。更多还原

【Abstract】 An experiment was conducted with the objective of the study of the effects of yeast cell wall on layer performance and egg shell quality. A total of 576 laying hens of 181-day- old Hyline breed were randomly allotted to six treatments which include a basal diet,basal diet +50ppm Znic bacitrain ,basal diet + 500ppm yeast cell wall, basal diet + l000ppm yeast cell wall, basal diet + 1500ppm yeast cell wall,and basal diet +2000ppm yeast cell wall. Every treatment has six replicates of 16 laying hens per replica..The experiment lasted 8 weeks.The results indicated that the egg production rate of basal diet + 1500ppm yeast cell wall treatment is significantly higher than other treatments(P<0.05). The egg weight and the daily egg production of basal diet + 1500ppm yeast cell wall treatment are significantly greater than other treatments(P<0.05). There are no significant difference of the feed efficiency rate among the treatments,although feed efficiency rate of basal diet + 1500ppm yeast cell wall treatment is the best of the 6 treatments.There are no significant differences of egg shell strength,egg shell thickness,Hafu unit,dying rate.the content of albumin,globumin,total protein in serum among the six treatments.The result shows that the yeast cell wall has a significant positive effects on the laying hens production performance with no effects on egg shell quality and serum protein contents.更多还原