纯中药添加剂对肉杂鸡促生产效果及其作用机理的研究

Effects of Chinese Medicine Additive on Promoting Production of Meat Hybrid Chicken and Its Action Mechanism

[目的]研究纯中药饲料添加剂HMS对肉杂鸡的促生产效果及其作用机理,为中药添加剂的促生产作用提供科学依据。[方法]选择体重相近的7日龄肉杂鸡,随机分为4组,在各组日粮中分别添加不同比例的纯中药饲料添加剂HMS。分别于试验开始前、开始后的第23、、4、5周末称重,并记录饲料消耗量;出栏时随机抽样,采集血清样本检测血清生化指标,另取法氏囊、脾脏,称重,并计算免疫器官指数。[结果]HMS可显著降低料肉比(P<0.05);极显著降低饲料消耗量(P<0.01);极显著提高血清高密度脂蛋白含量(P<0.01);显著提高血清碱性磷酸酶活性(P<0.05);极显著降低血清尿素氮和尿酸含量(P<0.01);显著降低血清胆固醇含量(P<0.05);增加免疫器官指数的作用与空白对照相比差异不显著(P>0.05),但有增加免疫器官指数的趋势。[结论]HMS降低了饲料消耗量和料肉比,提高了饲料的利用率,具有促生产作用,其机理可能是HMS提高了肉杂鸡的血清碱性磷酸酶活性和血清高密度脂蛋白的含量,降低了肉杂鸡的血清胆固醇、尿素氮、尿酸等的含量。

[Objective] The aim was to study the effects of Chinese medicine additive HMS on promoting the production of meat hybrid chicken and its action mechanism, so as to provide a scientific basis for the promotion of Chinese medicine additive on production. [Method] Meat hybrid chickens, 7-dayold with similar weight, were randomly divided into four groups. And Chinese medicine feed additive HMS was added to the diet of each group at different proportions. All the chickens were weighed before the test as well as at the end of the 2^rd, 3^rd, 4^th and 5^th week. The feed consumption was also recorded during the test. Before slaughter, serum samples were collected from the randomly selected chickens for the determination of serum biochemical indexes. Their bursae of Fabricius and spleens were collected and weighed in order to determine the indexes of immune organs. [ Result] HMS significantly reduced the feed conversion ratio （ P 〈 0.05）, very significantly reduced the feed consumption （ P 〈 0.01 ）, very significantly improved the content of serum highdensity lipoprotein （P 〈 0.01 ）, significantly increased the activitY of serum alkaline phosphatase （ P 〈 0.05）, very significantly reduced the content of serum urea nitrogen and uric acid （P 〈0.01）, and significantly reduced the level of serum cholesterol （P 〈0.05）. There were no significant difference between the test groups and the control group （ P 〉 0.05） in the increase of immune organ indexes, but the index of immune organs had increasing trend. [Conclusion] HMS reduces feed consumption and feed conversion ratio, improves the feed utilization, and has a role in promoting production. The possible mechanism may be HMS improving the activitY of serum alkaline phosphatase and the level of serum high-densitY lipoprotein, as well as reducing the content of serum cholesterol, urea nitrogen and uric acid in meat hybrid chickens.