title: The possibility of early estimation for fertility in bovine heterosexual twin females.
abstract: To diagnose the possibility of early estimation for fertility in bovine heterosexual twin females, we designed a new diagnostic program. The 9 freemartins (FM) and 5 normal females (Normal) were used in this study. All 14 cases, at 4 months of age, were given Pregnant Mare Serum Gonadotrophin (PMSG) and human Chorionic Gonadotrophin (hCG) 1.5-2 days later. Thereafter, the concentration of estradiol-17 beta (E2) was determined by RIA, and that of progesterone (P) was done by RIA and EIA (Ovcheck EIA Kit). The concentration of E2 in the Group of Normal rapidly increased after administration of PMSG, but in the Group of FM, the concentration of E2 changed in very low levels over 14 days. The concentration of P in the Group of Normal rapidly increased after administration of PMSG, but in the Group of FM, the concentration of P changed in very low levels over 14 days.
authors.affiliation: Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Satoh
authors.forename: T
authors.initials: T
authors.lastname: Hirata
authors.forename: Y
authors.initials: Y
authors.lastname: Miyake
authors.forename: Y
authors.initials: Y
authors.lastname: Kaneda
mesh_terms: D000375:Aging / Q000097:blood / Q000502:physiology*; D000818:Animals; D002417:Cattle / Q000097:blood / Q000502:physiology*; D006063:Chorionic Gonadotropin / Q000494:pharmacology; D004958:Estradiol / Q000097:blood; D005260:Female; D005298:Fertility / Q000502:physiology*; D005611:Freemartinism / Q000097:blood / Q000503:physiopathology; D006064:Gonadotropins, Equine / Q000494:pharmacology; D006801:Humans; D007124:Immunoenzyme Techniques / Q000662:veterinary; D007621:Karyotyping; D011237:Predictive Value of Tests; D011374:Progesterone / Q000097:blood; D011863:Radioimmunoassay / Q000662:veterinary; D013997:Time Factors; D014429:Twins, Dizygotic
chemical_list: D006063:Chorionic Gonadotropin; D006064:Gonadotropins, Equine; D011374:Progesterone; D004958:Estradiol