CAJ | 학술논문

为了研究日粮中不同蛋白饲料来源对绵羊瘤胃发酵功能的影响.本试验选用12只体重50 kg左右的苏尼特绵羊,随机分为4组,每组3只,Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别饲喂氮源为葵粕+玉米蛋白粉、鱼粉、棉粕、豆粕的日粮.结果表明:Ⅲ组瘤胃pH显著高于Ⅳ组(P＜0.05);瘤胃NH_3-N浓度、总VFA和丁酸的浓度受氮源影响不显著(P＞0.05),对乙酸、丙酸浓度和乙酸∶丙酸比例影响显著,Ⅱ组乙酸∶丙酸比例显著低于其它3组(P＜0.05).不同氮源日粮对固相食靡流通速率、纤维物质的动态降解率影响不显著(P＞0.05),但Ⅲ组(棉粕)纤维物质降解率最高.表明日粮蛋白源的变化改变了瘤胃发酵模式.
위료연구일량중불동단백사료래원대면양류위발효공능적영향.본시험선용12지체중50 kg좌우적소니특면양,수궤분위4조,매조3지,Ⅰ조、Ⅱ조、Ⅲ조、Ⅳ조분별사위담원위규박+옥미단백분、어분、면박、두박적일량.결과표명:Ⅲ조류위pH현저고우Ⅳ조(P＜0.05);류위NH_3-N농도、총VFA화정산적농도수담원영향불현저(P＞0.05),대을산、병산농도화을산∶병산비례영향현저,Ⅱ조을산∶병산비례현저저우기타3조(P＜0.05).불동담원일량대고상식미류통속솔、섬유물질적동태강해솔영향불현저(P＞0.05),단Ⅲ조(면박)섬유물질강해솔최고.표명일량단백원적변화개변료류위발효모식.
12 Sunite sheep, healthy and weighting about 50 kg, were randomly divided into 4 groups. Nitrogen sources of the diets were sunflowerseed meal+zein,fish meal,cottonseed meal and soybean meal for group Ⅰ , group Ⅱ , group Ⅲ and group Ⅳ respectively. The results indicated that Nitrogen sources significantly influenced rumen pH value, and pH of group Ⅲ was significantly higher than that of group Ⅳ (P<0. 05). No significant differences were found between groups in the concentration of NH_3 - N,total VFA and butyric acid (P>0. 05). However, in terms of the concentration of acetic acid and acetic acid,the propionic acid for group Ⅱ was significantly lower than for other groups (P<0. 05). The results also showed that there were no significant differences between groups in solid fractional passage rate and fiber dynamic degradation coefficients (P>0. 05). In addition rumen fiber digestibility in group Ⅲ was higher than the other groups. The fermentation mode of rumen varied with the transformation of dietary nitrogen sources.