1 524只艾维茵肉用种鸡被随机安置在一种新型自然交配笼中或以常规方式(1/3竹床,2/3垫料)饲养了一个产蛋周期.笼养种鸡繁殖、生产性能优于常规组:成活率提高15.5%;产蛋数增加20.9枚;大群用药减少75%.肉用种鸡双层饲养笼的优点还包括无垫料购置和贮藏费用、改良种鸡生产环境、减轻工人劳动强度和降低生产成本等.%Avian broiler breeders were raised through an egg production cycle either in a naturally mating cage or on a conventional system of one third bamboo slat floor and two thirds litter. The reproductive performance of hens raised in the cages was superior to that of hens raised on the conventional system. Survival rate was increased by 15.5% (P ＜ 0. 05). On average, the hens in the cages produced 20. 9 more eggs. Raising breeders in cages reduced medication rate by 75%. No significant differences between the two systems were observed for fertility, but significantly higher hatchability of fertile eggs (93.4%) was found for breeders in cages at 32 wk of age. Housing density was 40 % higher (6.9 birds per squared meter) in mating cages. The advantages of the mating cage system included eliminating litter and storage cost, improving the environment for breeders, and reducing labor intensity and cost. Therefore, the new system was an economically attractive alternative to the conventional system.
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