【摘要】 为研究夏季日粮中粗脂肪、粗蛋白、赖氨酸和蛋氨酸水平对肉种鸡生产性能的影响,27周龄良凤肉用种母鸡随机分为4个处理,每个处理3个重复,每个重复为490只,处理一饲喂对照日粮(CF2.7%,CP16.5%,Lys0.83%,Met0.40%),处理二饲喂高脂肪日粮(CF5.43%),处理三饲喂高蛋白日粮(CP18.2%),处理四饲喂高赖氨酸和蛋氨酸日粮(Lys0.91%,Met0.44%),试验期共112天。结果表明,对照日粮的营养水平是适合的,在此基础上分别增加日粮的粗脂肪水平、粗蛋白水平、蛋氨酸和赖氨酸水平,都不能提高肉种母鸡的生产性能,也不能减轻夏季炎热带来的影响。更多还原

【Abstract】 To study the effects of crute fat,crute protein,lysine and methionine levels of summer diet on production performance of breeding broilers,27-week-old Liangfeng breeding pullets were randomly divided into 4 treatments,3 repetitions each treatment and 490 broilers in each repetition. They were fed:Control diet(CF 2.7%,CP 16.5%,Lys 0.83%,Met 0.40%);high-fat diet(CF 5.43%);high-protein diet(CP 18.2%);high-Lys/Met diet(Lys 0.91%,Met 0.44%). The experiment conducted for 112 days. The results showed the control diet was reasonable. All changes about nutrition levels can′t improve production performance of breeding broilers and decrease the effects of summer,either.更多还原