Damaziak K, Michalczuk M, Zdanowska-Sąsiadek Ż, Niemiec J
Department of Poultry Science, University of Life Sciences, Warsaw, Poland.
Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzębiec, Magdalenka, Poland.
Reprod Domest Anim. 2015 Apr;50(2):341-343. doi: 10.1111/rda.12477. Epub 2014 Dec 24.
A double-yolked egg that was laid by an 11-month-old bronze turkey hen on 2 April, 2013 was reported. The presented case of developing turkey twin embryos is the first ever described case for this species. The egg weighed 125 g and had 74.6 mm in length and 53.0 mm in width. The embryos died between the 23rd and 24th day of incubation. Both twin 1 and twin 2 were fully developed with body weights of: 37.7 g and 40.3 g, respectively. The likely causes of death include inappropriate arrangement of embryos and insufficient gas exchange in the last period of incubation. The embryos were arranged along the long axis of the egg, one underneath the other, and were closely adhering to one another. The twins were different in plumage pigmentation. In twin 1, a spontaneous mutation of plumage pigmentation (B) was observed, whereas twin 2 showed appropriate pigmentation (b+) in respect to parents.
据报道，2013年4月2日，一只11个月大的青铜火鸡母鸡产下了一枚双黄蛋。所呈现的火鸡双胚胎发育案例是该物种有史以来首次被描述的案例。这枚蛋重125克，长74.6毫米，宽53.0毫米。胚胎在孵化的第23天至24天之间死亡。双胞胎1号和双胞胎2号均发育完全，体重分别为37.7克和40.3克。死亡的可能原因包括胚胎排列不当以及孵化后期气体交换不足。胚胎沿着蛋的长轴排列，一个在另一个下面，并且彼此紧密粘连。这对双胞胎的羽毛色素沉着不同。在双胞胎1号中，观察到羽毛色素沉着出现自发突变（B），而双胞胎2号相对于其父母表现出正常的色素沉着（b+）。
