title: The effects of stanozolol and boldenone undecylenate on scrotal width, testis weight, and sperm production in pony stallions.
abstract: Fifty mature pony stallions were randomly assigned to one of five treatment groups: Group 1- controls (no treatment), Group 2 - 0.55 mg/kg stanozolol weekly for 13 treatments, Group 3 - 1.1 mg/kg stanozolol every 3 weeks for 5 treatments, Group 4 - 1.1 mg/kg boldenone undecylenate every 3 weeks for 5 treatments, and Group 5 - 0.55 mg/kg boldenone undecylenate weekly for 13 treatments. Scrotal widths (SW), combined testis weights (CTW), and daily sperm productions (DSP) were not different between Groups 1 and 2. Ponies in Group 5 had smaller SW (P<0.01), smaller CTW and decreased DSP compared to controls (P < 0.05). Although SW for ponies in Groups 3 and 4 were less than for controls (P < 0.01), CTW and DSP were not different. The only treatment regime that did not alter SW, CTW, and DSP was Group 2 (0.55 mg/kg stanozolol weekly for 13 treatments).
authors.affiliation: Department of Veterinary Medicine and Surgery, University of Missouri-Columbia, Columbia, MO 65211 USA.
authors.forename: T L
authors.initials: TL
authors.lastname: Blanchard
authors.forename: R G
authors.initials: RG
authors.lastname: Elmore
authors.forename: R S
authors.initials: RS
authors.lastname: Youngquist
authors.forename: W E
authors.initials: WE
authors.lastname: Loch
authors.forename: D K
authors.initials: DK
authors.lastname: Hardin
authors.forename: C J
authors.initials: CJ
authors.lastname: Bierschwal
authors.forename: V K
authors.initials: VK
authors.lastname: Ganjam
authors.forename: J M
authors.initials: JM
authors.lastname: Balke
authors.forename: M R
authors.initials: MR
authors.lastname: Ellersieck
authors.forename: L J
authors.initials: LJ
authors.lastname: Dawson
authors.forename: W S
authors.initials: WS
authors.lastname: Miner