Veltmann J R, Jensen L S
Avian Dis. 1980 Jul-Sep;24(3):625-30.
Experiments were designed to study environmental factors that affect incidence of tibial dyschondroplasia (TD) in broiler chickens. A significant higher frequency of TD was observed in birds reared in floor pens vs. those maintained in a battery brooder with wire floors and fed the same diet. Incorporating either 5% raw or autoclaved broiler litter in the diet produced no significant effect on the incidence of the disease in chicks reared in floor pens covered with wood shavings or wire frames. During the first six months of 1979, the incidence of TD declined markedly in market-age broilers of the same strain fed similar diets and maintained on litter in the same broiler house.
开展实验以研究影响肉鸡胫骨软骨发育不良（TD）发病率的环境因素。与饲养在配有金属网地板的层叠式育雏器中且喂食相同日粮的肉鸡相比，观察到地面平养的肉鸡患TD的频率显著更高。在以刨花或金属网覆盖的地面平养雏鸡的日粮中添加5%的生肉鸡垫料或经高压灭菌的肉鸡垫料，对该病的发病率均无显著影响。在1979年的前六个月期间，同一品系、喂食相似日粮且饲养在同一鸡舍垫料上的上市日龄肉鸡的TD发病率显著下降。
