摘要
试验旨在研究以可消化氨基酸为基础的不同类型低蛋白日粮对肉鸡营养物质表观消化率、血清生化指标及含氮污染物排放的影响。选取1日龄哈伯德肉鸡648只,随机分为12组,每组6个重复,每个重复9只鸡。试验采用3×4双因素设计。日粮类型分别玉米-豆粕型、玉米-豆粕-棉粕型、玉米-豆粕-花生粕型。各阶段日粮蛋白标准水平为22%、20%、19%,其余蛋白水平在标准水平基础上分别降低1%、2%、3%。试验期6 w。结果显示,降低日粮蛋白水平能够显著降低粪中吲哚、粪臭素、氮的含量及氨气浓度(P<0.05),杂粕型日粮显著提高氨气浓度(P<0.05);饲料类型和蛋白水平的交互作用能够显著降低粪中吲哚、粪臭素及氮的含量以及氨气浓度(P<0.05)。研究表明,玉米-豆粕型日粮蛋白水平降低1.5%、玉米-豆粕-棉粕型日粮蛋白水平降低2%、玉米-豆粕-花生粕型日粮蛋白水平降低2%时的饲喂效果最好。
The experiment was to study the effect of different types of low protein diets based on digestible amino acids on apparent digestibility, serum biochemical indexes and nitrogen pollutant emission in broilers. 648 one-day-old Hubbard broilers were randomly divided into 12 groups, with six replicates in each group and nine chickens in each replicate. The experiment used a 3×4 two-factor design. The diet types were corn-soybean meal, corn-soybean-cotton meal, and corn-soybean-peanut meal. The standard protein levels of each stage were 22%, 20% and 19%, and other protein levels were 1%, 2% and 3% lower than standard level, respectively. The experiment lasted for 6 w. The results showed that decreasing dietary protein level significantly decreased the content of indole, skatin, nitrogen and ammonia concentration in feces(P<0.05). Miscellaneous meal diet significantly increased ammonia concentration(P<0.05). The interaction of dietary type and protein concentration significantly reduced the content of indole, skatin and nitrogen as well as ammonia concentration in feces(P<0.05). The experiment indicates that feeding effect was best when corn-soybean meal-cottonmeal diet protein level was decreased by 1.5%, corn-soybean meal-cottonmeal diet protein level was decreased by 2%, and corn-soybean meal-peanut meal diet protein level was decreased by 2%.
作者
张思轩
赵国先
马可为
冯志华
郝艳霜
ZHANG Si-xuan;ZHAO Guo-xian;MA Ke-wei;FENG Zhi-hua;HAO Yan-shuang
出处
《饲料研究》
CAS
北大核心
2021年第22期11-18,共8页
Feed Research
基金
河北省现代农业产业技术体系蛋肉鸡创新团队建设项目(项目编号:HBCT2018150203)
河北省重点研发计划项目(项目编号:19227305D)
鹿泉区厅区会商专项项目。
关键词
低蛋白日粮
杂粕型日粮
含氮污染物
可消化氨基酸
肉鸡
low protein diet
miscellaneous meal diet
nitrogen containing pollutants
digestible amino acids
broilers
