复合微生态制剂在肉鸡生产上的应用

Study on application of compound probiotics in broiler production

试验旨在探讨复合微生态制剂对鸡舍有害气体、肉鸡生长性能、营养素表观消化率和血清生化指标的影响。将400只1日龄雌性健康肉鸡随机分为4组,每组4个重复,每个重复25只。Ⅰ组为空白对照组,饲喂基础饲粮;Ⅱ,Ⅲ,Ⅳ组为复合微生态制剂处理组,在饲粮中分别添加0.1%,0.2%,0.4%的复合微生态制剂。结果表明:1)与对照组相比,试验Ⅲ组显著提高了肉鸡的平均日增重,降低死亡率和料重比(P<0.05);2)各试验组均能够显著降低鸡舍氨气和硫化氢的浓度(P<0.05);3)复合微生态制剂能显著提高肉鸡对粗蛋白、钙、磷的消化率(P<0.05),并使血清中总蛋白、胆碱酯酶和α-淀粉酶的含量显著高于对照组(P<0.05)。0.2%的复合微生态制剂能有效促进肉鸡的生长,显著提高肉鸡血清生化指标及对养分的吸收率(P<0.05),并对改善圈舍环境有较好的效果。

This experiment was conducted to investigate the effects of compound probiotics on henhouse environment,growth performance,nutrient digestibility and serum biochemical indices of broilers. Four hundred one-day-old female broiler chickens were randomly divided into 4 groups with 4 replicates in each group and 25 chickens per replicate. The chickens in the control group（groupⅠ） were fed with a basal diet,and group Ⅱ,Ⅲ and Ⅳ were fed with the basal diet supplemented with 0. 1%,0. 2% and 0. 4% compound probiotics,respectively. The results showed as follows： 1） Compared with the control group,the average daily gain of broilers in group Ⅲ was significantly higher（P〈0.05）,feed/gain（F/G） and death rate were significantly lower（P〈0.05）; 2） The concentrations of NH3 and H2S were significantly reduced in each treatment group（P〈0. 05）; 3） Compound probiotics could significantly improve the digestibilities of crude protein,Ca and P in broilers（P〈0. 05）,also increase the concentration of total protein and activities of cholinesterase and α-amylase in broiler serum. In conclusion,the supplementation of 0. 2%compound probiotics can improve the growth performance,significantly increase the serum indices and nutrient digestbilities of broilers（P〈0. 05）,also had a better effect on improving the environment of henhouse.