Kemper A, Wildenhahn V, Lyhs L
Arch Exp Veterinarmed. 1975;29(5):711-5.
A comparison of pigs weighing 30-50 kg reared either in groups or in individual cages showed that the management system affected the concentrations of catecholamines, 11-hydroxy corticosteroids and protein-bound iodine. Pigs kept in individual cages showed high concentrations of catecholamines and iodine, and low concentrations of corticosteroids. Pigs kept in groups showed high corticosteroids and low catecholamines and protein-bound iodine. The values for hormone concentrations in caged pigs were similar to those reported for the Poland China breed, which are not very resistant to stress produced by temperature and restraint.
对体重30至50公斤的猪分别采用群体饲养或单笼饲养的方式进行比较，结果显示饲养管理系统会影响儿茶酚胺、11 - 羟基皮质类固醇和蛋白结合碘的浓度。单笼饲养的猪儿茶酚胺和碘浓度较高，皮质类固醇浓度较低。群体饲养的猪皮质类固醇浓度较高，儿茶酚胺和蛋白结合碘浓度较低。笼养猪的激素浓度值与波兰中国猪种报道的相似，该猪种对温度和限制所产生的应激不太耐受。
