the gonadal histology of triploid chicken (gallus domesticus) embryos三倍体鸡的性腺的组织学(背带家)的胚胎.pdf

Original article The gonadal histology of triploid chicken (Gallus domesticus) embryos GA Bonaminio NS Fechheimer2 Department1of Molecular Genetics, The Ohio State University Columbus, OH; 2 Department of Dairy Science, The Ohio State University, Columbus, OH; 3 Department of Poultry Science, The Ohio State University, 2027 Co!’ey Rd, Columbus, OH l,3210, USA (Received 4 May 1992; accepted 2 February 1993) Summary - Gonadal histological analysis was conducted on 7 pure triploid White Leghorn chicken embryos and 1 2n/3n chimera at d 13 of incubation. Triploid embryos with sex chromosome complements ZZZ and ZWWexhibited gonadal organization consistent with that of normal diploid embryos while that of the ZZW triploid embryo was consistent with adult intersex birds. The morphology of the testes of the 5 ZZZ triploids resembled that of normal ZZ males. The right and left ovaries of the ZWW triploid embryo were similar histologically to those of normal diploid ZW females. The intersex ZZW triploid and ZW/ZZW chimera exhibited normal left ovarian organization but the right ovaries contained testis-like structures, similar to the reported histology of right ovaries in adult ZZW birds. The deviation of the observed numbers of each type of triploid embryos at d 13 of incubation from the expected number based on previous observations of embryos at 16 to 18 h of incubation suggests differential mortality for the 3 types of triploid embryos. triploid / chicken / gonad / intersex Résumé - L’histologie des gonades d’embryons triploïdes de poulet. L’analyse his- tologique des gonades a porté sur 7 embryons de poulet