| 育肥羔羊饲喂棕榈仁粕型日粮的性能 |
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| 编辑： 符琳琳 2016-09-30 | |
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54只平均体重23±0.35kg去势公羔随机分为五组，在饲料中加入不同层次的棕榈仁粕（在DM的基础上加入0，7.5，15，22.5和30%）以评估对摄入量，可消化性，空腹体重和增重组成的影响。结果发现干物质、有机物、粗蛋白质和非纤维碳水化合物（NFC）的摄入量存在一个线性减少的影响。 然而，将棕榈仁饼添加到浓缩料中，EE和NDF的摄入量呈线性增加。所有营养物质消化率系数的二次效应显著，除了NFC。随着饲喂棕榈仁饼水平增加，终体重，空腹体重和平均日增重呈现线性降低。棕榈仁粕作为浓缩料的部分替代成分降低了大部分营养素的摄入，除了EE和NDF，从而对饲喂50:50的粗饲料/浓缩料比率的羔羊的养分消化率和性能产生有害影响。 原文摘要如下： Performance of feedlot lambs fed palm kernel cake-based diets da Conceição dos Santos R1, Alves KS1, Mezzomo R1, Oliveira LR1, Cutrim DO1, Gomes DI2, Leite GP1, Araújo MY1 Abstract: Fifty-four castrated male lambs with an average body weight of 23±0.35kg were randomly assigned to five treatments that consisted of different levels of palm kernel cake in the diet (0.0, 7.5, 15.0, 22.5, and 30.0% on a DM basis) in order to evaluate the effects on intake, digestibility, empty body weight, and body gain composition. The intakes of dry matter, organic matter, crude protein, and non-fiber carbohydrates (NFC) presented with a decreasing linear effect. However, the intakes of EE and NDF presented with increased linear results as the palm kernel cake was added to the concentrate. There was a quadratic effect for the digestibility coefficient of all nutrients, except for NFC. The palm kernel cake had a decreasing linear effect on final body weight, empty body weight, and the average daily gain of the animals that were fed increased levels of palm kernel cake. The inclusion of palm kernel cake as a partial substitute for concentrate decreases the intake of the majority of nutrients, except for EE and NDF, and consequently, causes deleterious effects on the nutrient digestibility and performance of lambs that are fed a 50:50 roughage/concentrate ratio. Keywords: Body composition; By-product; Elaeis guineensis jacq; Nutrition; Ruminant 相关信息: |
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