Browsing Swine Day, 1986 by Author "Stevenson, J.S."

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Browsing Swine Day, 1986 by Author "Stevenson, J.S."

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  • Confinement and type of penning affects the interval to estrus and synchrony of estrus in gilts after altrenogest
    Davis, D.L.; Stevenson, J.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1986)
    We compared the effects of outside vs inside and individual vs group penning on the interval to estrus after synchronization of estrus with altrenogest. Altrenogest (15 mg/day) was fed for 14 days and penning treatments ...
  • Endocrine changes in sows in response to altered suckling and boar exposure
    Newton, E.A.; Stevenson, J.S.; Minton, J.E.; Davis, D.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1986)
    Eighteen sows were treated as follows: 1) 10 multiparous and four primiparous sows were separated from their litters for 6 hr/day and exposed to a mature boar for 1 hr/day during the last 8 days of lactation, and 2) four ...
  • Flushing affects secretion of the hormones controlling reproduction
    Rhodes, M.T.; Minton, J.E.; Stevenson, J.S.; Davis, D.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1986)
    Nineteen gilts were assigned to receive either 0 or 15 mg altrenogest/day for 14 consecutive days. On the day corresponding to the last altrenogest treatment, gilts not fed altrenogest were injected twice (morning and ...
  • Growth, carcass and boar-odor traits in male pigs fed altrenogest
    Stevenson, J.S.; Kluber, E.F. III; Minton, J.E.; Davis, D.L.; Hunt, M.C.; Nelssen, J.L.; Pollmann, D.S. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1986)
    Two experiments were conducted to examine the effects of a synthetic progestogen (altrenogest) on growth and carcass characteristics of boars. Altrenogest inhibited both the growth of the testes and the pubertal rise in ...
  • Testicular development and endocrine function in boars fed altrenogest
    Kluber, E.F. III; Minton, J.E.; Stevenson, J.S.; Davis, D.L. (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1986)
    Crossbred male pigs were used to evaluate the influence of a synthetic progestogen on reproductive development. Concentrations of luteinizing hormone (LH) and testosterone in blood serum were reduced while boars were being ...