Brake J D, Peebles E D
Poultry Science Department, Mississippi State University, Mississippi State 39762.
Poult Sci. 1992 Jun;71(6):945-50. doi: 10.3382/ps.0710945.
Two trials were conducted to investigate the effects of caging density and diet on the performance of caged layers. Diets were formulated contain .775, .725, and .675% lysine. The TSAA content was formulated to be 85% of the lysine content of each diet. Pullets were caged in 25.4 cm wide x 40.0 cm deep cages at three, two, or one bird per cage. Production data were collected for 112 days in Trial 1 and 168 days in Trial 2. As dietary protein, lysine, and TSAA increased, hen-day egg production, egg weight, and feed conversion improved (P less than .05) . Feed consumption and feed per dozen eggs were not consistently affected by diet. Caging density had no consistent effects on any of the production parameters. No interactions were detected between dietary treatments and cage density in either trial.
进行了两项试验以研究饲养密度和日粮对笼养蛋鸡生产性能的影响。日粮中赖氨酸含量分别为0.775%、0.725%和0.675%。蛋氨酸含量设定为各日粮赖氨酸含量的85%。小母鸡饲养在宽25.4厘米、深40.0厘米的笼子里，每笼饲养三只、两只或一只。试验1收集了112天的生产数据，试验2收集了168天的生产数据。随着日粮蛋白质、赖氨酸和蛋氨酸含量的增加，母鸡日产蛋量、蛋重和饲料转化率得到改善（P<0.05）。采食量和每打鸡蛋的耗料量不受日粮的持续影响。饲养密度对任何生产参数均无持续影响。两项试验均未检测到日粮处理和饲养密度之间的交互作用。
