Wahlström A, Tauson R, Elwinger K
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Funbo-Lövsta Research Centre, Uppsala.
Poult Sci. 2001 Mar;80(3):266-71. doi: 10.1093/ps/80.3.266.
In the present experiment, we evaluated the effects on plumage condition and health of feeding a mash or a crumbled diet to two hybrids of laying hens in an aviary system. The two diets had the same composition and calculated nutrient content. A total of 3,204 birds was studied from 20 to 80 wk of age. Two hybrids, Lohmann Selected Leghorn and SLU-1329 (two line crosses of Leghorn and Rhode Island Red), were housed in six pens each of an aviary system with groups of 269 and 265 birds, respectively. There were three replicates per treatment (diet x hybrid). Diet generally had little effect on plumage condition, health, and tonic immobility. However, birds fed the crumbled diet had significantly fewer problems with bumble foot than those fed the mash diet. Hybrids reacted differently in most traits studied; SLU-1329 had better health scores but more problems with cannibalism and salpingitis than Lohmann Selected Leghorns, whereas the reverse was found in the proportion of cases with coccidiosis. The hybrid differences found underline the importance of genotype.
在本实验中，我们评估了在禽舍系统中给两种杂交蛋鸡饲喂粉料或破碎料对其羽毛状况和健康的影响。这两种饲料的成分和计算得出的营养含量相同。总共对3204只鸡进行了20至80周龄的研究。两种杂交鸡，罗曼精选来航鸡和SLU - 1329（来航鸡与罗德岛红鸡的两系杂交种），分别以每组269只和265只的数量饲养在禽舍系统的六个围栏中。每个处理（饲料×杂交鸡品种）有三个重复。饲料一般对羽毛状况、健康和强直性静止影响不大。然而，饲喂破碎料的鸡比饲喂粉料的鸡发生脚垫问题的情况明显更少。在大多数研究的性状中，杂交鸡品种的反应不同；SLU - 1329的健康评分更高，但与罗曼精选来航鸡相比，其同类相食和输卵管炎问题更多，而在球虫病病例比例方面则相反。所发现的杂交鸡品种差异突显了基因型的重要性。
