Fiser P S
Poult Sci. 1976 Nov;55(6):2463-5. doi: 10.3382/ps.0552463.
The abnormality resulting in legless condition which appeared in one pedigree mating in the R.I.R. stock is reported. The condition was lethal to the affected embryos between five and seven days of the incubation period. The matings carried out suggested that the condition was not hereditary but since only two males were raised from the original mating it cannot be stated with certainty.
据报道，在里普利红鸡（R.I.R.）品系的一次系谱交配中出现了导致无腿状况的异常情况。这种情况对孵化期五到七天的受影响胚胎是致命的。所进行的交配表明这种情况不是遗传性的，但由于最初交配中只培育出了两只雄性，所以不能确定地说明这一点。
