乳酸菌类微生态制剂对广西三黄鸡生产性能的影响

Effect of Microbial Ecological Agent including the Lactic Acid Bacteria as the Foundation on Growth Performance in Yellow- feathered Broilers in Guangxi

选取1日龄广西三黄鸡1200羽，随机分为4组，每组300羽，每组设3个重复，每个重复100羽。对照组日粮为原基础日粮配方（玉米豆粕型配方），试验Ⅰ、Ⅱ、Ⅲ组日粮分别在基础日粮配方中添加100、200、300克／吨微生态制剂。试验结果表明，在试验全期，与对照组相比，试验Ⅰ、Ⅱ、Ⅲ组均显著提高日采食量、日增重（P〈0．05），显著降低料肉比（P〈0．05），试验3组中试验Ⅱ的效果最显著；与对照组相比，试验Ⅰ、Ⅱ、Ⅲ组均显著降低发病率和死淘率，试验3组中，试验Ⅱ、Ⅲ组的效果优于试验Ⅰ组。综上所述，乳酸菌类微生态制剂可显著提高三黄鸡生产性能，显著降低发病率和死淘率，推荐适宜的添加量为200轰／咬。

A total of 1200 1 - day - old healthy Yellow - feathered broilers with similar boby- weight were randomly allocated into 4 groups with 3 replicates per group and 100 broilers in each replicate. The control group was fed the basal diet; Groups Ⅰ , Ⅱ , Ⅲ were experimental groups which fed the basal diets supplemented with 100,200,300 g/t microbial ecological agent inclu- ding the lactic acid bacteria as the foundation, respectively. The results showed that, in the whole experiment period, compared with the control group,groups Ⅰ , Ⅱ , Ⅲ increased feed intake and average daily gain significantly （ P 〈0. 05 ）, decreased feed/gain significantly （ P 〈 0.05 ）, the group III is better than the group Ⅰ , group Ⅱ. It indicated that microbial ecological agent could improve the production performance of Yellow -feathered broilers, significantly reduce the incidence and mortality. Its appropriate level of adding in diet was 200g/t.