不同碳水化合物饲粮对公鸡和肉鸡能量代谢的影响

M. Klein, Marlies Neubert, L. Hoffmann, W. Jentsch, M. Beyer, H. Scholze, S. Kuhla
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引用次数: 5

摘要

采用氮-碳-平衡法测定公鸡和鸡的能量平衡。试验1选用12只成年来角白公鸡,交替饲喂基础日粮和75%基础日粮+ 25%碳水化合物的补充日粮。试验2选用6组12只雄性肉鸡,分别饲喂两种不同碳水化合物来源(40% DM)和不同能量水平的饲粮。研究的碳水化合物来源为葡萄糖、果糖、蔗糖、玉米淀粉、生马铃薯和蒸马铃薯淀粉、干甜菜浆、木薯、小麦、玉米、黑麦和大麦。在两个试验中,添加生马铃薯淀粉、甜菜浆和大麦的饲粮能量消化率均显著低于其他饲粮。消化率为88% ~ 81%。通过简单线性回归,可以证明不同碳水化合物、糖类、淀粉和谷类对代谢能的利用效率没有显著差异。各日粮的MEm值非常接近(411 ~ 429 kJ·kg BW‐0.75·d‐1)。
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Energy metabolism of cocks and broiler chickens fed on diets with different carbohydrate sources
Energy balances of cocks and chickens were measured using the nitrogen‐carbon‐balance method. In Experiment 1 twelve adult White Leghorn cocks were fed alternately on a basal ration or on a supplemental ration composed of 75% basal diet and 25% carbohydrate source as a supplement. In Experiment 2 six groups of 12 male broiler chickens were fed successively on two diets each with different carbohydrate sources (40% of DM) and on two energy levels. The investigated carbohydrate sources were glucose, fructose, sucrose, maize starch, raw and steamed potato starch, dried sugar beet pulp, tapioka, wheat, maize, rye and barley. In both experiments the energy digestibility of the diets with raw potato starch, beet pulp and barley was significantly lower compared to the other diets. Digestibility of those ranged from 88 to 81%. By simple linear regression no significant differences in efficiency of utilisation of ME of the diets between the carbohydrate sources sugars, starches and cereal grains could be proved. The corresponding MEm values agreed very close among the diets (411 to 429 kJ·kg BW‐0.75·d‐1).
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