The effect of allicin on performance and caecum microorganism and serum biochemical index in laying hens was determined.
研究不同水平大蒜素对蛋鸡生产性能、盲肠微生物和血清生化指标的影响。
There was no significant difference in production performance and nutrition utilization between individual and combined supplementation of amylase and compound enzymes to diet for laying breeder hens.
与单独添加相比，淀粉酶和复合酶联合使用时，蛋鸡生产性能和养分利用率并未得到明显改善。
This experiment was conducted to evaluate the effects of vitamin a (va) supplementation in diet on growth performance and immune function of laying hens and broilers.
试验研究了不同的维生素a (VA)添加水平对肉鸡和蛋鸡的生长性能及机体免疫功能的影响。
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