Saif Y M, Nestor K E, Dearth R N, Renner P A
Avian Dis. 1984 Jul-Sep;28(3):770-3.
Natural disease outbreaks of erysipelas and fowl cholera occurred in several lines of turkeys maintained for genetic studies. There were line differences in mortality during both outbreaks, suggesting that there is genetic variation in resistance to these diseases. A line developed by selection for increased egg production had a higher mortality rate from fowl cholera than did the randombred control line from which it was developed. Both the egg line and its control line had a lower mortality rate in the erysipelas outbreak than did a line selected for increased growth rate. Both diseases induced high mortality in a line selected for increased growth.
在用于遗传研究的几个火鸡品系中发生了丹毒和禽霍乱的自然疾病暴发。在两次暴发期间，各品系的死亡率存在差异，这表明对这些疾病的抗性存在遗传变异。一个通过选择提高产蛋量而培育的品系，其禽霍乱死亡率高于培育它的随机交配对照品系。在丹毒暴发中，产蛋品系及其对照品系的死亡率均低于一个通过选择提高生长速度而培育的品系。这两种疾病在一个通过选择提高生长速度而培育的品系中均导致了高死亡率。
