Department of Animal Protection and Welfare and Veterinary Public Health, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.
Department of Pharmacology and Pharmacy, Faculty of Veterinary Medicine, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.
Anim Sci J. 2020 Jan-Dec;91(1):e13400. doi: 10.1111/asj.13400.
Biochemical and hematological examination of blood and individual assessment of the birds were performed in Lohman Brown laying hens at 45 weeks of age housed in different systems. The biochemical examination revealed higher (p < .01) corticosterone levels, creatine kinase, and aspartate aminotransferase activity and lower (p < .01) levels of lactate, triglycerides, albumin, calcium, and phosphorus in aviary hens compared to hens housed in furnished cages. Hematological examination of hens housed in aviaries revealed higher (p < .05) hematocrit, leukocytes, heterophils, eosinophils, basophils, monocytes, and H/L ratio. Furthermore, hens housed in aviaries had lower (p < .01) body weight than hens in furnished cages, they were worse feathered (p < .001), had more damaged combs (p < .05), and poorer physical condition (p < .01). In contrast, caged hens showed worse (p < .01) feather condition of the wings due to abrasion and claws due to overgrowth. The results have shown that the housing system has a significant impact on the internal environment and condition of birds and that housing in aviaries without taking into account the specifics of such housing may lead to significant stress and disturbance to the welfare of laying hens.
在 45 周龄的 Lohman Brown 产蛋鸡中进行了血液生化和血液学检查，并对鸟类进行了个体评估，这些鸡分别被饲养在不同的系统中。生化检查显示，与饲养在有家具笼中的鸡相比，饲养在禽舍中的鸡的皮质酮水平（p<.01）、肌酸激酶和天门冬氨酸氨基转移酶活性更高，而乳酸盐、甘油三酯、白蛋白、钙和磷水平更低（p<.01）。对饲养在禽舍中的母鸡进行的血液学检查显示，其血细胞比容（p<.05）、白细胞、异嗜细胞、嗜酸性粒细胞、嗜碱性粒细胞、单核细胞和 H/L 比值更高。此外，饲养在禽舍中的母鸡体重比饲养在有家具笼中的母鸡低（p<.01），羽毛更差（p<.001），梳子受损更严重（p<.05），身体状况更差（p<.01）。相比之下，由于磨损，笼养母鸡的翅膀羽毛状况较差（p<.01），由于过度生长，爪子状况较差（p<.01）。结果表明，饲养系统对鸟类的内部环境和状况有重大影响，如果不考虑禽舍的具体情况而在禽舍中饲养，可能会对产蛋母鸡的福利造成重大压力和干扰。
