不同水平膨化血粉对生长鹅生产性能及盲肠微生物菌群的影响

为了研究不同水平膨化血粉对生长鹅生长性能及盲肠微生物菌群的影响,试验选择300只28日龄、体重为(1 142.68±50.64)g的豁眼鹅,随机分为3组(日粮中分别添加1.5%、3.0%、4.5%的膨化血粉),每组设5个重复,每个重复20只鹅,进行为期28 d的饲养试验。结果表明:不同水平的膨化血粉对生长鹅的生长性能有显著的影响,3.0%膨化血粉组的平均日增重、平均日采食量显著高于膨化血粉4.5%组、膨化血粉1.5%组;在料重比方面,3.0%膨化血粉组显著低于其他两组。在3种不同水平的膨化血粉处理中,3.0%膨化血粉组乳酸杆菌和双歧杆菌的数量显著高于其他组,而大肠杆菌的数量却最低;1.5%膨化血粉组乳酸杆菌和双歧杆菌的数量均低于其他组,而大肠杆菌的数量在3种处理中最高。说明在生长鹅的基础日粮中添加3.0%膨化血粉具有较好的应用效果。

The effect of different levels of expanding blood meal on the production performance and microorganisms in the caecum for growing geese

Three hundred huoyan geese(1 142.68±50.64 g BW;28 d of age) were randomly divided into three treatments with 1.5%,3.0% and 4.5% expanding blood meal in the diets(five replicates of 20 geese per treatment).The feeding experiment lasted for 28 days.The results showed that different levels of expanding blood meal had a significant influence on the growth performance of growing geese,and the group added 3.0% expanded blood meal was significantly higher than the groups other added 1.5% expanding blood meal and the group added 4.5% expanding blood meal in the average daily gain and average daily feed intake,the group added 3.0% expanding blood meal was significantly lower than other groups in the feed conversion ratio;the number of lactic acid bacteria and bifidobacteria in the group added 3.0% expanding blood meal group were higher than other groups,but had the lowest number of E.coli in the three groups;the number of lactic acid bacteria and bifidobacterium in the group added 1.5% expanding blood meal were lower than the other groups,but had the highest number of E.coli.In conclusion,the best addition level of expanding blood meal in the diets of the growing huoyan geese was 3.0% in this test.