Karras S, Modransky P, Welker B
Department of Large Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg 24061.
J Am Vet Med Assoc. 1992 Nov 15;201(10):1584-6.
Multiple congenital urethral abnormalities were successfully corrected in a polled goat kid. Anatomic genito-urinary abnormalities identified were paired testes with associated epididymis, ductus deferens, and active endometrial tissue. Blood karyotyping revealed the female state--XX sex chromosomes. This case exemplifies the complex interactions in addition to Y dominant Mendelian genetics that determine reproductive tract development in goats. The resultant intersex state is clinically recognized with greater frequency in polled progeny.
一只无角山羊幼崽的多种先天性尿道异常成功得到矫正。所发现的解剖学上的生殖泌尿系统异常包括成对的睾丸以及相关的附睾、输精管和活跃的子宫内膜组织。血液核型分析显示为雌性状态——XX性染色体。该病例除了体现决定山羊生殖道发育的Y显性孟德尔遗传学外,还例证了复杂的相互作用。这种所产生的雌雄同体状态在无角后代中临床上更为常见。