粉碎与制粒对肉鸡养分利用率的影响  

Effect of Grinding and Pelleting on the Nutrient Utilisation in Broilers

作　　者：张亮[1] 杨在宾[1] 杨维仁[1] 姜淑贞[1] 张桂国[1] 董冬华[1] 郭艺璇[1] 

机构地区：[1]山东农业大学动物科技学院,泰安271018

出　　处：《中国粮油学报》2014年第5期95-99,105,共6页Journal of the Chinese Cereals and Oils Association

摘　　要：分别选择10日龄和30日龄AA肉仔鸡各144只,均随机分成8个处理,每个处理6个重复,每个重复3只鸡.采用粉料和颗粒2种料型,每个料型4个粉碎粒度梯度（378、430、516、590 μm）,利用传统全收粪法,研究制粒与粉碎粒度对养分利用率的影响.结果表明：肉鸡18 ～21日龄时,粉料的养分和能量利用率高于颗粒饲料,饲喂粉料时,养分利用率随粉碎粒度的增大而线性增大（P＜0.05）,饲喂颗粒料时,养分利用率随粉碎粒度的增大反而线性降低（P＜0.05）.2种料型对粒度变化出现了相反的效应.肉鸡38～41日龄时,颗粒饲料养分和能量的利用率高于粉料,不同粉碎粒度不再影响肉大鸡日粮的养分利用率（P＞0.05）.结论：料型和肉鸡日龄会影响原料粉碎粒度对养分利用率的作用.144 10 -d -old and 144 30 -d -old AA broilers were respectively distributed into individual cages for 8 dietary treatments with six replicates of 18 broilers for each diet. Two feed form （mash and pellets） and four kinds of particle size （378, 430, 516, 590 μm） were selected and the nutrient and energy digestibility were determined by using a conventional total collection method in free intake. The results indicated： The mash improve the nutrient utilization in 18 - 21 d starter broilers （P 〈 0.05 ） , but pellets increase the nutrient utilization in 38 - 41 d fin- isher broilers （P 〈 0.05）. For the starters, increasing the particle size, the nutrient utilization and metabolisable en- ergy of mash were linearly rising （ P 〈 0.05 ）, but the effect was reversed for pellets （ P 〈 0.05 ）. The particle size had no effect on the nutrient utilization of mash and pellets in finisher broilers （P 〉 0.05 ）. In summary, the contri- bution of particle size to nutrient utilization can be influenced by the feed form and ages of broilers.

关 键 词：粉碎 制粒 养分利用率 肉鸡 

分 类 号：S831.5[农业科学—畜牧学]