不同类型饲粮中添加β-甘露聚糖酶对肉仔鸡生产性能、养分利用和血细胞指标的影响

发布时间：2018-02-05 22:52

本文关键词： 肉仔鸡饲粮 β-甘露聚糖酶生产性能养分利用血细胞指标　出处：《甘肃农业大学学报》2017年04期 　论文类型：期刊论文

【摘要】：【目的】旨在研究不同类型饲粮中添加β-甘露聚糖酶对肉仔鸡生产性能、养分消化利用及血细胞指标的影响.【方法】试验采用3×2两因素析因试验设计,A因素为饲粮类型(玉米-杂粕型、玉米-小麦-杂粕型和小麦-杂粕型),B因素为β-甘露聚糖酶添加水平(0和500g/t).选用576只健康的1日龄科宝肉鸡,随机分为6组,每组设8个重复,每个重复12只鸡(公母各半).【结果】玉米-杂粕组试鸡体增质量显著高于小麦-杂粕组,且料重比显著降低,试验前、后期分别降低3.86%和6.72%(P0.05).玉米-杂粕组试鸡表观代谢能、氮和干物质的利用率均显著高于其他两组(P0.05).试验前期加酶组试鸡体增质量较对照组显著提高,料重比显著下降(P0.05);玉米-杂粕饲粮加酶后平均红细胞血红蛋白含量(MCH)表现出高于玉米-小麦-杂粕饲粮的趋势(P=0.066).饲粮和β-甘露聚糖酶间交互作用显著影响干物质利用率和平均红细胞血红蛋白浓度(MCHC)水平(P0.05).【结论】在本试验条件下,玉米-杂粕型饲粮组肉仔鸡生产性能、干物质利用率、氮利用率和表观代谢能均优于小麦-杂粕饲粮;添加β-甘露聚糖酶提高了肉仔鸡前期生产性能,但未受饲料类型的影响.
[Abstract]:[objective] to study the effects of 尾 -mannanase on the performance, nutrient digestibility and blood cell index of broilers. [methods] the experiment was designed by 3 脳 2 factorial analysis. A factors were dietary type (corn-mixed meal type, corn-wheat-mixed meal type and wheat-hybrid meal type). B factor was 尾 -mannanase supplementation level 0 and 500g / t. 576 healthy 1-day-old Kebao broilers were randomly divided into 6 groups with 8 replicates in each group. [results] the weight gain of maize mixed meal group was significantly higher than that of wheat mixed meal group, and the feed weight ratio was significantly lower than that of wheat mixed meal group. In the later stage, 3.86% and 6.72 were decreased, respectively, and the apparent metabolic energy was decreased in the corn-mixed meal group. The utilization ratio of nitrogen and dry matter was significantly higher than that of the other two groups. The average erythrocyte hemoglobin content (MCH) of corn-mixed meal diet was higher than that of corn-wheat-mixed meal diet (P0. 066). The interaction between diet and 尾 -mannanase significantly affected dry matter utilization and mean erythrocyte hemoglobin concentration (MCHCC) level. [conclusion] under this experimental condition. The performance, dry matter utilization rate, nitrogen utilization rate and apparent metabolic energy of corn-hybrid diet group were better than that of wheat-hybrid meal diet. Addition of 尾 -mannanase improved the performance of broilers, but was not affected by feed type.
【作者单位】：甘肃农业大学动物科学技术学院;
【分类号】：S831.5

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