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首页> 外文期刊>Indian Journal of Small Ruminants >RUMEN FERMENTATION AND NUTRIENT UTILIZATION IN SHEEP FED MAIZE STOVER-BASEDDENSIFIED BLOCKS
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RUMEN FERMENTATION AND NUTRIENT UTILIZATION IN SHEEP FED MAIZE STOVER-BASEDDENSIFIED BLOCKS

机译：绵羊饲喂玉米秸秆致密块的瘤胃发酵和养分利用

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摘要

The effect of feeding maize stover based densified blocks (150x150x50mm~3 in size and composed of 86% chopped maize stover, 10% molasses, 2% mineral mixture, 1% urea, 1% salt and 0.01% vitamin AD_3) on rumen fermentation pattern and nutrient utilization in sheep was assessed by comparing with conventional system of feeding (concentrate mixture and ad libitum roughage). Both these diets were randomly allotted to twelve Deccani rams of comparable body weights equally divided into two groups in a completely randomized design. Feeding of maize stover-based densified blocks did not affect the nutrient and fibre digestibility except reduction in ether extract (P<0.01) and energy (P<0.05) digestibility. This resulted in ower digestible crude protein and total digestible nutrient content of the blocks compared to the conventional diet. The sheep fed maize stover-based densified blocks were under lower (P<0.01) plane of nutrition but could meet the normal requirements as evident by dry matter and nutrient intakes. Feeding of densified blocks did not affect the rumen fermentation pattern, except an increase (P<0.01) in rumen NH_3-N compared to the conventional diet. Results of this study indicated that densified blocks containing maize stover and 10% molasses along with urea, minerals and vitamins could form a maintenance ration during feed scarcity.
机译：饲喂基于玉米秸秆的致密块（尺寸为150x150x50mm〜3，由86％切碎的玉米秸秆，10％糖蜜，2％矿物混合物，1％尿素，1％盐和0.01％维生素AD_3组成）对瘤胃发酵模式的影响通过与常规饲喂系统（浓缩混合物和任意粗饲料）比较，评估了绵羊的养分利用率。这两种饮食均随机分配给十二只可比体重的公羊，以完全随机的方式分为两组。以玉米秸秆为基础的致密块的饲喂除了降低乙醚提取物（P <0.01）和能量（P <0.05）的消化率外，不影响养分和纤维的消化率。与常规饮食相比，该块的可消化粗蛋白和总可消化营养成分含量较低。饲喂以玉米秸秆为基础的致密块的绵羊的营养水平较低（P <0.01），但从干物质和营养摄入量来看，可以满足正常需求。饲喂致密化块料不影响瘤胃发酵模式，除了瘤胃NH_3-N比常规饮食增加（P <0.01）。这项研究的结果表明，包含玉米秸秆和10％糖蜜以及尿素，矿物质和维生素的致密块可以在饲料短缺期间形成维持率。

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