title: [Twins in cattle. Freemartin or not a freemartin? Preliminary Communication].
abstract: The preliminary results of comparative studies designed to make it possible to establish a diagnosis of 'freemartin' are reported. Three methods were used, namely typing of the blood, chromosome analysis and determination of the length of the vagina. In a very large number of cases, the diagnosis may even be established in very young calves by measuring the length of the vagina. Laboratory studies may provide a solution in doubtful cases.
mesh_terms: D000818:Animals; D001788:Blood Grouping and Crossmatching; D002417:Cattle; D002875:Chromosomes / Q000032:analysis; D005260:Female; D005611:Freemartinism / Q000175:diagnosis*; D008297:Male; D014621:Vagina / Q000033:anatomy & histology
vernacular_title: Tweelingen bij runderen. Wel of geen kwee? Voorlopige mededeling.