复合小肽制剂对肉鸡生长后期环境和健康的影响

发布时间：2019-01-01 07:52

【摘要】：为了研究复合小肽制剂对肉鸡生长后期环境和健康的影响,试验选择32日龄健康AA+肉鸡800只,随机分为4组,每组设4个重复,每个重复50只鸡,各组肉鸡饲养在不同的鸡舍中。对照组饲喂不含复合小肽制剂的基础日粮,试验1组、试验2组、试验3组分别在基础日粮中添加1.0%、1.5%和2.0%的复合小肽制剂,试验期10 d。结果表明:添加1.0%的复合小肽制剂第10天肉鸡舍内的NH_3含量显著下降(P0.05),肉鸡的胸腺指数、腔上囊指数显著升高(P0.05),6~10 d肉鸡呼吸道病的发病率和整个试验期的大肠杆菌病发病率及死亡率显著降低(P0.05);添加1.5%、2.0%的复合小肽制剂能显著或极显著降低第5天和第10天肉鸡舍内的NH_3含量(P0.05或P0.01),显著提高肉鸡的胸腺指数、腔上囊指数、脾脏指数和新城疫抗体效价(P0.05),肉鸡的呼吸道病发病率、大肠杆菌病发病率和死亡率显著或者极显著降低(P0.05或P0.01)。说明在肉鸡日粮中添加1.5%~2.0%的复合小肽制剂能明显降低肉鸡舍的NH_3含量,有利于肉鸡免疫器官的发育和提高新城疫抗体效价,降低肉鸡的发病死亡率。
[Abstract]:In order to study the effect of compound small peptide preparation on the environment and health of broilers at the later stage of growth, 800 healthy AA broilers aged 32 days were randomly divided into 4 groups with 4 replicates in each group and 50 chickens in each group. The broilers in each group were raised in different coops. The control group was fed with basal diet without compound small peptide preparation, the trial group 1, test 2 and test 3 were fed with 1.0% and 2.0% compound small peptide respectively in the basal diet for 10 days. The results showed that the content of NH_3 in broilers decreased significantly on the 10th day (P0.05), the thymus index and bursa index of broilers increased significantly (P0.05). The incidence of respiratory tract disease and the incidence and mortality of Escherichia coli were significantly decreased (P0.05). Adding 1.5% and 2.0% of compound small peptide preparation significantly or extremely significantly decreased the content of NH_3 in broilers on the 5th and 10th day (P0.05 or P0.01), and significantly increased the thymus index and bursa index of broilers. Spleen index and Newcastle disease antibody titer (P0.05), broiler respiratory disease incidence, Escherichia coli disease incidence and mortality significantly decreased (P0.05 or P0.01). The results showed that adding 1.5% and 2.0% compound small peptide preparation to the diet of broilers could significantly reduce the NH_3 content in broilers, which was beneficial to the development of immune organs and the increase of Newcastle disease antibody titer, and to reduce the morbidity and mortality of broilers.
【作者单位】：河南牧业经济学院动物科技学院;郑州轻工业学院食品与生物工程学院;
【基金】：河南牧业经济学院科技创新团队项目(HUAHE2015003)
【分类号】：S831.5

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