Renden J A, Benoff F H
Poult Sci. 1980 Nov;59(11):2559-63. doi: 10.3382/ps.0592559.
Experiments were conducted to examine the effects of progesterone on the developing chick embryo with particular attention to the reproductive system. Differing levels of progesterone (0, .5, 1.0, or 2.0 mg) were dissolved in propylene glycol and injected at 4 days of incubation into the yolk sac of eggs from Barred Plymouth Rock females mated to New Hampshire males. Progesterone caused significant reductions in both weight and length and shank weight and length in 18-day-old embryos. Aside from reductions in embryonic growth, progesterone did not cause gross alterations in embryonic development. Progesterone modified neither normal morphology nor differentiation of male or female gonads and associated ductal systems.
进行了实验以研究孕酮对发育中的鸡胚的影响，特别关注生殖系统。将不同水平的孕酮（0、0.5、1.0或2.0毫克）溶解在丙二醇中，并在孵化第4天注射到与新罕布什尔州雄性交配的斑纹普利茅斯洛克雌性的卵黄囊中。孕酮导致18日龄胚胎的体重、体长、胫重和胫长显著降低。除了胚胎生长减少外，孕酮并未引起胚胎发育的明显改变。孕酮既未改变正常形态，也未影响雄性或雌性性腺及相关导管系统的分化。
