微生物发酵饲料对蛋鸡肠道菌群和氮磷排泄率的影响  

Effects of Microorganism Fermentation Feed on Intestinal Flora and Excretion Rate of N and P of Laying Hens

作　　者：吕月琴[1] 孙汝江[1] 肖发沂 姜柏翠 陈克卫[1] 

机构地区：[1]中国农业大学烟台研究院,山东烟台264670 [2]山东畜牧兽医职业学院 [3]海阳仁和科技有限公司

出　　处：《家禽科学》2012年第6期9-11,共3页Poultry Science

摘　　要：选择42周龄海兰褐蛋鸡480只,随机分为4组,每组设5个重复。对照A组饲喂基础日粮;试验B、C、D组分别为每100kg基础日粮中添加微生物发酵饲料5kg、10kg、15kg。预试期为14d,正试期为42d。试验结果表明:①各试验组肠道中乳酸杆菌数量显著提高(P<0.05),大肠杆菌数量显著降低(P<0.05);②各试验组的氮排泄率均有下降,其中C组下降最明显(P<0.05),磷排泄率均有下降的趋势,但差异不显著(P>0.05)。以上结果表明,微生物发酵饲料可以明显改善蛋鸡的肠道微生态平衡,降低氮磷排泄率;添加量以每100kg基础日粮中添加微生物发酵饲料10kg为最佳。480 Hy-line variety brown laying hens of 42-week-old were randomly allotted into 4 groups, each group assigned 5 replications. The control group A were fed with the basic feed, group B, C, D fed with every 100 kg the basic diet added with 5, 10, 15 kg microorganism fermentation feed. The period was divided into two phases, including 14 days of pre--experiment and 42 days of experiment The results showed that：①In the laying hens which were supplemented with microorganism fermentation feed, the concentration of lactobacilli was significantly increased （P〈0.05）, and that of E. coil was decreased （P〈0.05）;②Compared with the control group, the excretion rate of Nitrogen was significantly decreased （P〈0.05）, and there was no significant difference in the excretion rate of Phosphorus among the treatments （P〉0.05）. The best amount is every 100 kg the basic diet added with 10 kg microorganism fermentation feed.

关 键 词：微生物发酵饲料 蛋鸡 肠道菌群 氮磷排泄率 

分 类 号：S831.5[农业科学—畜牧学]