title: Fetal sex determination by ultrasonically locating the genital tubercle in ewes.
abstract: Accuracy of transrectal ultrasonographic determination of fetal sex by identifying and locating the genital tubercle was determined in 29 ewes with single fetus at 60 to 69 d post breeding. Examinations were conducted once under farm conditions utilizing a real-time diagnostic scanner equipped with a linear-array 5 MHz transducer. Definite diagnoses were made after lambing. Total accuracy was 89%, and 100% (14/14) of the male fetuses and, 76% (10/13) of the female fetuses were correctly diagnosed. In 2 (7%) ewes, fetal sex was not determinable.
authors.forename: C A
authors.initials: CA
authors.lastname: Coubrough
authors.forename: M C
authors.initials: MC
authors.lastname: Castell
mesh_terms: D000818:Animals; D005314:Embryonic and Fetal Development; D005260:Female; D005835:Genitalia / Q000000981:diagnostic imaging* / Q000196:embryology*; D008297:Male; D011247:Pregnancy; D012732:Sex Determination Analysis / Q000379:methods / Q000662:veterinary*; D012756:Sheep / Q000196:embryology*; D016216:Ultrasonography, Prenatal / Q000379:methods* / Q000662:veterinary