腐植酸对蛋鸡的生产性及质量的影响

把添加了腐植酸的商品饲料，投放到蛋鸡的产蛋后期到末期，观察了腐植酸对蛋鸡生产性的影响，结果如下：（1）单饲试验区的产蛋率会随着饲养时间的推移而增加，而且有抑制高龄蛋鸡产蛋率下降的作用，同时饲料的消费量有增加的趋势。但是，并没有影响到鸡蛋的质量。（2）在控制鸡粪臭气的试验中，腐植酸含量添加比例越高，经过时间越长，氨气的浓度就会越低，特别是在24 h以后，具有明显控制氨气产生的效果，同时它对硫化氢与甲硫醇的生成也有抑制作用。

The Effect on Productivity and Quality of Laying Hens Intaked with Humic Acid

The feed added humic acid products was put in laying hens from the later stage to the last period, egg pro-ductbility of the laying hens was observed. The results showed that：（1） The laying rate increased with the feeding time in the separately breeding test area. In addition, the trend of laying rate decreasing for older laying hens was effectively inhibited. Consumption of the feed had an increasing tendency at the same time. However, there was no effect on the quality of eggs. （2） In the experiment of controlling odor of fowl manure, the higher humic acid content was and the lon-ger process experiences led to the lower ammonia concentration. Particularly after 24 hours, it became more and more obvious to effectively control a large quantity of ammonia production. At the same time, produce of hydrogen sulifde and methyl mercaptan were effectively inhibited.