1) Estrous 2) Polyoestrous 
(from the article `estrus`) ...receptivity is highest—this is the estrous period. Some animals (e.g., dogs) are monestrous, having only one heat during a breeding season. Others ... ...period (diestrus) and another preparatory proestrus phase. Mammals that breed only once a year are termed monestrous and exhibit a long anestrus; .....
A term for measuring the quality of a pig or herdDescription of the condition in female mammals (such as pigs) of having several estrus cycles per year.
Having two or more estrous cycles in a mating season. ... (05 Mar 2000) ... 
Type: Term Pronunciation: pol′ē-es′trŭs Definitions: 1. Having two or more estrous cycles in a mating season.
Having more than a single estrous cycle per year.
[adj] - having more than one period of estrus per year
polyestrous A description of an animal that completes two or more fertile cycles during a mating season.
polyoestrous adjective having more than one period of estrus per year