Multiple choice

In case of a mare, transition from non-breeding to breeding season is caused by

  1. decrease in melatonin

  2. decrease in the day length

  3. a switch from positive to negative feedback by estradiol

  4. the presence of progesterone coming from corpus luteum

  5. increase in melatonin level

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is a long day breeder.