随着养鸡业的规模化和集约化,养鸡生产中产生的废弃物对环境的污染不断加剧.粪便排出体外后在微生物和细胞外酶作用下产生恶臭气味,不但严重地影响着鸡的健康和生产性能的发挥,而且也对人类的健康造成极大的威胁.有关粪便无害化处理已成为无公害畜禽产品生产中的一个重要环节.本项研究目的在于利用一些新型产品通过日粮添加以及鸡粪堆积发酵的方法探讨其对鸡粪污染的控制以及资源化综合利用的效果.

以广西主要地方鸡种为基础素材,采取育种与营养、饲养、疫病防治相结合的技术措施,在保持原有肉质风味的同时,进一步提高了产蛋量和产苗数、群体整齐度和成活率。

A feeding trial was conducted to investigate the effects of diet energy on performance of Yinxiang chicken.The single factor randomized block design was used.Three hundred and sixty one-days old Yinxiang chickens were assigned to 3 treatments with 2 replicas of each treatment.ME(metabolizable energy) levels of diets were designed as follows:ME:11.90MJ/kg,12.54MJ/kg,13.20MJ/kg The trial duration was 56 days.In the trial,the average body gain was improved with the increase of ME(P<0.05),and ME had significant effect on feed intake and ME intake(P<0.05).The ratio of feed/gain were significantly influenced by ME (P<0.05),it decreased with the increase of diet ME level.During 0 to 8 weeks,the diet with 13.20 MJ/kg was recommended.The live weight of chicken with the age can be discribed by equation Y=1/[1/1000+0.025×(0.491)t.

1材料和方法 1.1试验鸡及设计 试验鸡为广西畜牧研究所培育的1日龄银香麻鸡母雏,共400只,随机分成4组,1组为对照组,2、3、4组为试验组,每组100只鸡,各组基础日粮相同,0～4周龄四个组均采用24小时光照;