CAJ | 학술논문

试验选用日龄与健康状况相同的黄羽肉鸡120羽，分为3个试验组和1个对照组，试验组A、B、C日粮分别添加1‰、1.5‰、2‰的凝结芽孢杆菌制剂，65日龄时进行屠宰，测定生长性能、屠宰性能、肠道内菌群及小肠绒毛组织结构、肌肉主要营养成分含量。结果表明：凝结芽孢杆菌对促进黄羽肉鸡的生长作用显著，其中以1.5‰添加量效果最好；屠宰率和半净膛率无显著影响（P>0.05）；对全净膛率有显著提高作用(P<0.05)，其中以2‰添加量为最佳；试验组A、B、C肠道沙门氏菌分别为7.905±0.026 Lg cfu/g、6.433±0.092 Lg cfu/g和5.705±0.021 Lg cfu/g，显著低于对照组（P<0.05），试验A、B、C组大肠杆菌分别为7.517±0.022 Lg cfu/g、7.510±0.021 Lg cfu/g、7.4800±0.032 Lg cfu/g与对照组差异不显著（P>0.05），试验A、B、C组肠道内葡萄球菌分别为7.218±0.043 Lg cfu/g、6.885±0.031 Lg cfu/g、6.245±0.076 Lg cfu/g显著低于对照组（P<0.05）；试验组绒毛高度显著高于对照组（P<0.05），隐窝深度显著低于对照组（P<0.05）；绒毛高度与隐窝深度比值，3个试验组与对照组差异显著（P<0.05）；对腿肌率、胸肌率都有显著提高作用(P<0.05)，其中以2‰添加量最佳；凝结芽孢杆菌对肌肉粗灰分、嫩度、失水率均无显著影响(P>0.05)；对蛋白含量影响不显著(P>0.05)，凝结芽孢杆菌对胸肌和腿肌脂肪含量都有显著提高作用。总体来看，在日粮中添加1.5‰的凝结芽孢杆菌制剂，可以明显提高黄羽肉鸡的生产水平。
시험선용일령여건강상황상동적황우육계120우，분위3개시험조화1개대조조，시험조A、B、C일량분별첨가1‰、1.5‰、2‰적응결아포간균제제，65일령시진행도재，측정생장성능、도재성능、장도내균군급소장융모조직결구、기육주요영양성분함량。결과표명：응결아포간균대촉진황우육계적생장작용현저，기중이1.5‰첨가량효과최호；도재솔화반정당솔무현저영향（P>0.05）；대전정당솔유현저제고작용(P<0.05)，기중이2‰첨가량위최가；시험조A、B、C장도사문씨균분별위7.905±0.026 Lg cfu/g、6.433±0.092 Lg cfu/g화5.705±0.021 Lg cfu/g，현저저우대조조（P<0.05），시험A、B、C조대장간균분별위7.517±0.022 Lg cfu/g、7.510±0.021 Lg cfu/g、7.4800±0.032 Lg cfu/g여대조조차이불현저（P>0.05），시험A、B、C조장도내포도구균분별위7.218±0.043 Lg cfu/g、6.885±0.031 Lg cfu/g、6.245±0.076 Lg cfu/g현저저우대조조（P<0.05）；시험조융모고도현저고우대조조（P<0.05），은와심도현저저우대조조（P<0.05）；융모고도여은와심도비치，3개시험조여대조조차이현저（P<0.05）；대퇴기솔、흉기솔도유현저제고작용(P<0.05)，기중이2‰첨가량최가；응결아포간균대기육조회분、눈도、실수솔균무현저영향(P>0.05)；대단백함량영향불현저(P>0.05)，응결아포간균대흉기화퇴기지방함량도유현저제고작용。총체래간，재일량중첨가1.5‰적응결아포간균제제，가이명현제고황우육계적생산수평。
The effect of different levels of Bacillus coagulans on growth and slaughter performance,intestinal flora,tissue structure of small intestine,and content of main nutrients in muscle of yellow-feather chickens were studied in this article.Birds with the same age and health status were randomly segregated into four groups,which were control group (basal diet),group A (basal diet+1‰ B.coagulans),group B(basal diet+1.5‰ B.coagulans) and group C (basal diet+2‰ B.coagulans).They were slaughtered at the age of 65 days.The results showed that B.coagulans coagulans had a significant effect on the growth of yellow-feathered chicken.Addition of 1.5‰ B.coagulans was the best, and did not affect slaughter rate,semi-eviscerated rate, eviscerated rate, meat tenderness degree and water loss rate,crude ash and protein content of muscle (P>0.05).The count of Salmonella enterica (7.905 ±0.026 Lg cfu/g vs. 6.433 ±0.092 Lg cfu/g vs. 5.705 ±0.021 Lg cfu/g,for group A,B and C,respectively) and Staphylococcus (7.218±0.043 Lg cfu/g vs. 6.885±0.031 Lg cfu/g vs. 6.245±0.076 Lg cfu/g,for group A,B and C,respectively) in experimental groups were obviously lower than the control group (P<0.05).Otherwise, no significant differences were detected on the number of Escherichia coli in experiment groups (7.517±0.022 Lg cfu/g vs. 7.510±0.021 Ig cfu/g vs. 7.4800±0.032 Ig cfu/g for group A,B and C,respectively) compared with control group (P>0.05).Three different levels of B.coagulans all significantly enhanced the villus height,ratio of villus height to crypt depth and fat content of the pectoral and thigh muscle (P<0.05),while significantly reduced the crypt depth (P<0.05).Higher leg and breast muscle rate (P<0.05) were also observed in the treatment groups compared with the control,with the highest leg and breast rate found in group C.The results indicated that supplementation of B.coagulans can improve the productive level of the yellow-feather chickens.The appropriate amount of B. coagulans added to basal diet is 1.5‰ under this experimental condition.