Paterson A M, Adams N R
Aust Vet J. 1978 Aug;54(8):398-9. doi: 10.1111/j.1751-0813.1978.tb02513.x.
A gilt subsequently found to have one ovary and one ovotestis exhibited two oestrous cycles with normal ovulations before lapsing into bahavioural anoestrus. The testicular tissue of the ovotestis was not developed at the time of oestrus and ovulation. After it developed cyclic behaviour was abolished.
后来发现一只 gilt 有一个卵巢和一个卵睾，在进入行为性乏情期之前出现了两个正常排卵的发情周期。卵睾的睾丸组织在发情和排卵时未发育。在其发育后，周期性行为就消失了。
