【摘要】 试验选择体重、健康状况基本一致的 2 1周龄海兰灰商品蛋鸡 384只 ,随机等分为 4个组 ,设 1个对照组及 3个试验组。试验组分别在对照组基础上添加不同微生态制剂 ,以探讨其效果。试验结果表明 :添加不同微生态制剂的A组、B组和C组与对照组D组相比 ,产蛋率平均分别提高 5 93 %、 4 82 %和 4 93 % ;料蛋比平均分别降低 7 43 %、 7 55%和 5 97% ;软破蛋率平均分别降低 33 51 %、 2 6 1 2 %和 2 6 2 3 % ,差异显著 (P <0 0 5) ;平均蛋重均高于对照组 ,但差异不显著 (P >0 0 5)。微生态制剂B组和C组与A组之间的各项指标差异不显著 (P >0 0 5)。更多还原

【Abstract】 wks-old hens were randomly divided into one control group and three experimental groups. The experimental groups received different microbial feed additives (MFA). The results showed that compared with the control group, the laying rate of three experimental groups (A、B、C) increased by 5.93%、4.82% and 4.93%,the feed/egg ratio decreased by 7.43%、7.55% and 5.97%; the ratio of broken eggs reduced by 33.51%、26.12% and 26.23%; the average egg weight also increas. Compared with group A, group B and C had no remarkable differences in the performance indexes.更多还原