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Effects of different carbohydrate sources on activity of rumen microbial enzymes and nitrogen retention in sheep fed diet containing recycled poultry bedding

机译:不同碳水化合物源对含家禽垫料的绵羊饲喂日粮中瘤胃微生物酶活性和氮保留的影响

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ABSTRACT In a completely randomized design, 15 male Moghani sheep were fed to determine the influence of supplementing recycled poultry bedding (RPB) with different carbohydrate sources on the activities of rumen hydrolytic enzymes and nitrogen retention. In the first diet, corn and barley were used as the carbohydrate sources (M0). In the second and third diets, corn and barley were replaced by 50 (M50 diet) and 100 (M100 diet) g/kg of sugar beet molasses, respectively. The extracellular activity of carboxymethyl-cellulase (CMCase) was increased linearly by dietary inclusion of molasses [linear (L), P ?¢?????¢????.05) by dietary inclusion of molasses. Dietary inclusion of molasses in RPB-containing diets linearly increased filter paper degrading (FPD) activity in all fractions of ruminal content (L, P ?¢????
机译:摘要在完全随机的设计中,喂养了15只Moghani雄性绵羊,以确定补充不同碳水化合物来源的再生家禽垫料(RPB)对瘤胃水解酶活性和氮保持率的影响。在第一种饮食中,玉米和大麦被用作碳水化合物来源(M0)。在第二和第三种饮食中,分别以50(M50饮食)和100(M100饮食)g / kg甜菜糖蜜代替了玉米和大麦。饮食中糖蜜的摄入使羧甲基纤维素酶(CMCase)的胞外活性呈线性增加[线性(L),P <0.05> P <0.05>。瘤胃含量中微晶纤维素酶的细胞外和总活性呈线性增加(L,P <=> <0.05>),而其细胞活性不受影响(P = <0.05)。 >?¢ ????。05)饮食中加入糖蜜。在含RPB的日粮中添加糖蜜的膳食在瘤胃含量的所有部分中均线性增加了滤纸降解(FPD)的活性(L,P≤0.05)。在日粮中添加糖蜜线性降低(±L,P = 0.05),β-淀粉酶的总活性,以及​​蛋白酶的细胞和总活性。日粮中糖蜜含量的增加线性增加了滞留氮(L,P≤0.05)。总之,在日粮中添加含糖蜜的RPB日粮可以改善绵羊的纤溶酶活性和氮保持能力。

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