The 'male effect' in sheep and goats--revisiting the dogmas.

  title={The 'male effect' in sheep and goats--revisiting the dogmas.},
  author={Jos{\'e} Alberto Delgadillo and H{\'e}l{\`e}ne Gelez and Rodolfo Ungerfeld and Penelope A. R. Hawken and G B Martin},
  journal={Behavioural brain research},
  volume={200 2},
Male-induced ovulation in sheep and goats (the 'male effect'), documented during the period 1940-1960, has long been shrouded in preconceptions concerning how, when and why it worked. These preconceptions became dogmas but recent research is challenging them so, in this review, we have re-visited some major physiological (breed seasonality; characteristics of the response; the nature of the male stimuli) and physical factors (duration of male presence; isolation from male stimuli) that affect… CONTINUE READING