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首页> 外文期刊>Tropical Animal Health and Production >Effects of urea-treated fibrous diets on nutrient intake, digestibility, performance and haematological parameters of Yankasa rams
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Effects of urea-treated fibrous diets on nutrient intake, digestibility, performance and haematological parameters of Yankasa rams

机译：尿素纤维饮食对扬卡萨公羊营养摄入，消化率，性能和血液学参数的影响

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摘要

An experiment was conducted to investigate the effects of urea-treated fibrous diets on the intake, nutrient digestibility, performance and haematological parameters of Yankasa rams. A total of 48 Yankasa rams (BW 10.00 +/- 1.50 kg; 6-8 months old) were allocated into four treatment groups in a completely randomised design (12 rams per treatment). Animals were placed on complete rations of yam peels, maize bran and rice husk treated with 0, 1.0, 1.5 or 2.0 % urea. The experiment lasted for 18 weeks. Yankasa rams fed with urea-treated diets had higher feed intake (949.88 and 938.04 g/day for U-15 and U-20, respectively), daily weight gain (227.67 and 181.00 g/day for U-15 and U-20, respectively) and better feed conversion ratio (4.17 and 5.18 for U-15 and U-20, respectively). Rams on urea-treated diets had higher haemoglobin and red blood cell contents and higher weight gains, indicating that urea treatment enhanced nutrient supply and utilisation at the tissue level. It was concluded that urea treatment of fibrous farm by-products is a promising feeding strategy especially during the dry season when there is scarcity of high-quality forages. Addition of 1.5 % urea to roughage diets and farm by-products to form a total mixed ration may preclude the search for supplements.
机译：进行了一项实验，以研究尿素处理的纤维饮食对扬卡萨公羊的摄入，养分消化率，性能和血液学参数的影响。完全随机设计将总共48只Yankasa公羊（BW 10.00 +/- 1.50 kg; 6-8个月大）分为四个治疗组（每个治疗12只公羊）。将动物置于完全定量的山药皮，玉米麸和稻壳中，分别用0％，1.0％，1.5％或2.0％的尿素处理。实验持续了18周。用尿素处理的日卡饲喂的扬卡萨公羊具有较高的采食量（U-15和U-20分别为949.88和938.04 g /天），日增重（U-15和U-20分别为227.67和181.00 g /天，饲料转化率更高（U-15和U-20分别为4.17和5.18）。用尿素处理的饮食中的公羊具有更高的血红蛋白和红细胞含量以及更高的体重增加，表明尿素处理可以提高组织水平的营养供应和利用。结论是，尿素处理纤维状农副产品是一种有前途的饲喂策略，尤其是在旱季缺乏优质饲料的情况下。在粗饲料和农场副产品中添加1.5％尿素以形成总混合日粮可能会阻止寻找补充剂。

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