CAJ | 학술논문

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、15kgo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lOkg为最佳。
선택42주령해란갈단계480지，수궤분위4조，매조설5개중복。대조A조사위기출일량；시험B、C、D조분별위매100kg기출일량중첨가미생물발효사료5kg、10kg、15kgo예시기위14d，정시기위42d。시험결과표명：①각시험조장도중유산간균수량현저제고（P〈0．05），대장간균수량현저강저（P〈0．05）；②각시험조적담배설솔균유하강，기중C조하강최명현（P〈0．05），린배설솔균유하강적추세，단차이불현저（P〉0．05）。이상결과표명，미생물발효사료가이명현개선단계적장도미생태평형，강저담린배설솔；첨가량이매100kg기출일량중첨가미생물발효사료lOkg위최가。
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.