title: Annual changes in testicular size and serum and fecal testosterone concentrations in male bharals, Pseudois nayaur.
abstract: The serum and fecal testosterone (T) concentrations and testicular sizes of two male bharals (Pseudois nayaur) were determined for approximately one year. The profiles of the fecal T concentrations showed a similar tendency as the profiles of serum T concentrations, and there was a significant correlation between serum and fecal T concentrations (r=0.72). T concentrations rose drastically in October and decreased gradually until January. The maximum testicular size was observed between November and January. Semen collected between December and January was excellent in quality and comparable to domestic sheep and goats. The active periods of the testes were synchronized with the early breeding season of females.
authors.affiliation: United Graduate School of Agricultural Science, Gifu University, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kusuda
authors.forename: Hirotada
authors.initials: H
authors.lastname: Nagami
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kusunoki
authors.forename: Tomoya
authors.initials: T
authors.lastname: Nishikaku
authors.forename: Daisuke
authors.initials: D
authors.lastname: Nakagawa
authors.forename: Toyoharu
authors.initials: T
authors.lastname: Takida
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kurita
authors.forename: Koji
authors.initials: K
authors.lastname: Uemichi
authors.forename: Masaki
authors.initials: M
authors.lastname: Fukai
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kubota
authors.forename: Kaoru
authors.initials: K
authors.lastname: Ueda
authors.forename: Tomoko
authors.initials: T
authors.lastname: Ooe
authors.forename: Kazuo
authors.initials: K
authors.lastname: Okuda
authors.forename: Kayoko
authors.initials: K
authors.lastname: Ueda
authors.forename: Osamu
authors.initials: O
authors.lastname: Doi
mesh_terms: D000818:Animals; D003247:Conservation of Natural Resources; D005243:Feces / Q000737:chemistry*; D008297:Male; D012621:Seasons; D012756:Sheep / Q000033:anatomy & histology / Q000097:blood / Q000502:physiology*; D013094:Spermatozoa / Q000502:physiology*; D013737:Testis / Q000033:anatomy & histology / Q000502:physiology*; D013739:Testosterone / Q000097:blood / Q000378:metabolism*
chemical_list: D013739:Testosterone