【作者】 巴合提古丽·马那提拜；

【导师】 沙尔山别克；

【作者基本信息】 新疆农业大学 ， 动物营养与饲料科学， 2007， 硕士

【摘要】 本研究通过两个试验考察复合氨基酸螯合锌、锰对肉鸡生产性能和营养物质表观消化率的影响以及不同指标为标识的氨基酸微量元素的适宜添加量。试验一选用1200只7日龄体重基本一致、健康的商品代AA肉用仔鸡,采用单因子随机区组试验设计,随机分成6个处理,每处理4个重复,每个重复50只鸡,用3D复合氨基酸螯合锌、锰分别替代基础日粮中相应无机元素水平的0%、20%、40%、60%、80%、100%,研究其对肉用仔鸡生产性能、腿病发生率和死亡率的影响以及适宜替代比例。试验结果表明:饲粮添加复合氨基酸螯合锌、锰对肉仔鸡生产性能、腿病发生率和死亡率有一定的改善作用,与相应无机元素相比,饲养全期绝对增重和相对增长率提高,其中试验组4(60%)和试验组5(80%)的体重增长率明显提高(p<0.05),其饲料转化率分别较对照组增加11.8%和11.0%。试验二从试验一中选用24只42日龄体重均匀、健康的AA肉鸡,分为6个组,每组4只,单笼圈养。用氨基酸螯合锌、锰分别替代基础饲粮中添加的相应无机元素水平的0%、20%、40%、60%、80%和100%,6个处理组中Zn、Mn的含量和其它营养指标保持完全一致。采用常规分析法,测定日粮和鸡粪中干物质、粗蛋白、粗脂肪、粗灰分、钙、磷、锌和锰。研究不同水平下有机微量元素对这些营养物质和矿物质表观代谢的影响。试验结果表明,3D复合氨基酸螯合物锌、锰可以提高肉仔鸡对饲料中各种营养物质的表观消化率和矿物质的沉积率。消化代谢试验中同样复合氨基酸螯合锌、锰替代硫酸锌、锰的比例为40%、60%和80%时所获得的结果比较好。从这两个试验的各项指标综合考虑,肉仔鸡饲料中3D复合氨基酸螯合锌、锰替代相应无机微量元素的适宜比例为60%。更多还原

【Abstract】 The study researched the effects of complex amino acid chelate zinc,manganese supplementation on the production performance, apparent digestibility of nutrition and mineral elements in broiler chickens through the following two experiments.Experiment 1: 1200 7-day-old, healthy AA broilers were divided into 6 treatments randomly with 4 repeats in each treatment and 50 broiler chickens per repeat. Adopting single factor design to compare the basal diet supplement with different level of CAAC-Zn, Mn (3D-Zn,3D-Mn 0%,20%,40%,60%,80%,100%) on the growth performance, disease occur rate in leg and death rate of broiler chickens, and ascertain the optimum combination level. The results showed: CAAC-Zn, Mn was effective for improving growth performance, decreasing the disease occur rate in leg and death rate of broiler chickens. Compared with corresponsive inorganic microelement sulfate, the abstract body weight and relative body weight increased during the whole feeding time, especially the body weight of treatment 4(60%) and 5(80%) increased significantly(p<0.05), and the feed conversion of which increased by 11.8%,and 11.0%.Experiment 2: In this experimen, one factor design was conducted and 24 healthy, 42-day-old Arbor Acres(AA) broiler chickens were randomly divided into six groups(n=4 for each group). Six different level of﹙3D-Zn, 3D-Mn, 0%、20%、40%、60%、80%、100%﹚ were supplemented on the daily diet. Among six groups the supplemental level of the Zn、Mn was indent to other nutrition index. We used the conventional method to determine CP, DM, CF, CA, Ca, P, Zn and Mn in the daily diet and excrement to investigate the effect of different levels of CAAC-Zn, Mn on the apparent digestibility of these nutritions and mineral elements. The result showed that: CAAC-Zn, Mn could improve the apparent digestibility of nutritions and mineral elements in broilers’diet. Especially the level of 40%, 60% and 80% showed better effect than other levels.Take into account of each index in these experiments; the optimum combination level of CAAC-Zn, Mn was 60%.更多还原