Influence of boar contact on attainment of puberty in gilts after removal of the olfactory bulbs.

نویسندگان

  • R N Kirkwood
  • J M Forbes
  • P E Hughes
چکیده

At 6-7 weeks of age the olfactory bulbs were removed from gilts which were then exposed to vasectomized boars for 30 min/day, starting on Day 160. Mean +/- s.e.m. age at first oestrus was similar in these gilts (230 +/- 15 days) to that in intact gilts not exposed to a boar (234 +/- 8 days) but greater (P < 0.05) than for sham- and un-operated gilts exposed to a boar (204 +/- 3 and 208 +/- 9 days, respectively). There were no differences in growth rate or ovulation rate at first oestrus. It is concluded that the main stimulus involved in the boar effect is olfactory in nature.

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عنوان ژورنال:
  • Journal of reproduction and fertility

دوره 61 1  شماره 

صفحات  -

تاریخ انتشار 1981