【摘要】 以粤黄鸡为试验对象,探讨一种鱼腥草复合剂作金霉素替代品的可行性.以不含金霉素和鱼腥草剂、含金霉素和含鱼腥草复合剂等3种饲粮,开展9日龄粤黄鸡的4周饲养试验、代谢试验和体内抑菌试验.结果表明:该鱼腥草复合剂在粤黄鸡饲料中添加量为5kg/t时,不降低饲料氮和能量的利用率,因而对粤黄鸡生长无不良影响;能降低试验鸡的死亡率,但随饲喂时间延长其饲喂效果变差;能极显著地降低鸡盲肠内容物中需氧菌的含量.更多还原

【Abstract】 the possibility was assessed using Houttuynia cordata compound as a substitute for Chlortetracycline in poultry science. AME experiment,4week feeding experiment with 9dayold Yuehuang chicks and inhibitory experiment in vivo were conducted with three experimental diets. Diet 1(negative control) was a commercial basal diet without antibiotics and Houttuynia cordata compound, diet 2(positive control) was the basal diet supplemented with Chlortetracycline, and diet 3 was the basal diet supplemented with Houttuynia cordata compound at 5 kg/t. The results showed that the Houttuynia cordata compound:(1)effectively inhibited aerobic bacteria in caecum digesta of chicks in vivo;(2)enhanced the nitrogen utilization of feed;(3)had no adverse effect on the growth of Yuehuang chicks;(4)decreased the mortality of chicks, but the disease preventive effect of the Houttuynia cordata compound decreased with further extension of time.更多还原