微生态制剂对东乡黑羽绿壳蛋鸡生产性能和蛋品质的影响

Effect of Probioties on Production Performance and Egg Quality of Dongxiang Black-feather Green-shell Laying Hens

为研究微生态制剂对绿壳蛋鸡生产性能和蛋品质的影响,试验选取180只350日龄健康东乡黑羽绿壳蛋鸡,随机分为3个组,每组6个重复,每个重复10只。其中对照组(A组)饲喂基础日粮,试验组(B、C组)分别在基础日粮中添加0.2%、0.5%微生物制剂。预饲期7 d,正试期21 d。结果显示:1试验第2周,试验组产蛋率较对照组分别提高了13.21%、18.87%(P<0.05);第3周,试验组较对照组产蛋率分别提高了15.09%、20.75%(P<0.05),平均蛋重分别提高了6.71%、8.33%(P<0.05),料蛋比分别降低了8.33%、13.51%(P<0.05)。2试验第21天,试验组鸡蛋的蛋黄颜色达到了9.5级,显著高于对照组(P<0.05)。微生态制剂对其他常规蛋品质无显著影响(P>0.05)。表明,蛋鸡饲粮中添加微生态制剂可显著提高东乡黑羽绿壳蛋鸡生产性能和鸡蛋的蛋黄色泽,对其他常规蛋品质无负面影响。

This experiment was conducted to study the effect of probioties on production performance and egg quality of green-shell laying hens. A total of 180 healthy 350-day-age Dongxiang black-feather green-shell laying hens were randomly divided into 3 groups with 6 replicates per group and 10 hens per replicates. Hens of the control group （group A） were fed with a corn-soybean meal basal diet, and hens of experimental groups （group B, C） were fed with the control diet with addition of 0.2%,0.5% of probioties,respectively. The adjustment period lasted for 7 days, and the experimental period lasted for 21 days. The results showed as follows：①At the second week of experiment,compared with the control group,the laying rates of experimental groups were increased by 13.21% and 18.87% （P〈0.05）,respectively.At the third week of experiment,compared with the control group,the laying rates of experimental groups were increased by 15.09% and 20.75% （P〈0.05）,average egg weights were increased by 6.71% and 8.33% （P〈0.05）,feed to egg ratios were decreased by 8.33% and 13.51% （P〈0.05）,respectively. ②At the 21st day of experiment,the egg yolk color of experimental groups was higher than that of control group （P〈0.05）,and reached the level of 9.5. Dietary probioties had no significant effect on other conventional egg quality （P〉0.05）. In conclusion, addition of probioties in layer diet could improve the egg yolk color and egg production of Dongxiang black-feather green-shell laying hens and it had no negative effects on other conventional egg quality.