日粮中添加复合微生态制剂对蛋种鸡生产性能的影响

研究日粮中添加复合微生态制剂对蛋种鸡生产性能的影响,试验选用1日龄海兰褐蛋种鸡320只,随机分为4个组,每组4个重复,每重复20只。分别在基础日粮上添加0、50、100、200g/t的复合微生态制剂。结果表明:添加复合微生态制剂组蛋种鸡的平均日采食量都低于对照组,其中100、200g/t复合微生态制剂组在0～3周龄时达显著水平(P<0.05);200g/t复合微生态制剂组蛋种鸡的平均日增重在11～16周龄时显著高于对照组(P<0.05);0～6周龄时,100、200g/t复合微生态制剂组蛋种鸡的料肉比均显著低于对照组(P<0.05)。200g/t复合微生态制剂组平均跖长日增长在4～6周龄时显著高于对照组(P<0.05)。复合微生态制剂添加水平为100g/t的综合效果最佳。

Effects of compound probiotics on production performance of layer breeders

This study was designed to investigate the effects of supplementation of compound probiotics on production performance of layer breeders.A flocks of 320 Hy-Line brown parents of 1-day-old were randomly divided into four groups,each group was assigned 4 replications and 20 layers per replication.Groups in the basal diet were added 0,50,100,200 g/t of compound probiotics.The results showed that:the average daily feed intake of layer breeders in adding compound probiotics groups was lower than the control group,in which 100,200 g/t groups at 0~3 weeks of age,reached a significant level(P<0.05);at 11~16 weeks of age,the average daily gain of 200 g/t group was significantly higher than the control group(P<0.05);at 0~6 weeks of age,the feed conversion ratio of 100,200 g/t groups were significantly lower than the control group(P<0.05);at 4~6 weeks of age,compared to the control group,the average daily growth of metatarsal length of 200 g/t group reached to a significant level(P<0.05).Adding 100 g/t of the compound probiotics was the optimal dosage.