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Related to polyestrous: Oestrus


1. Having several estrous cycles during a single breeding season.
2. Ovulating more than once a year.


(Zoology) zoology characterized by multiple ovulation each breeding season


or pol•y•oes•trous

(ˌpɒl iˈɛs trəs)

having several estrus cycles annually or during a breeding season.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.polyestrous - having more than one period of estrus per year
estrous - (of lower mammals) showing or in a state of estrus; in heat; "the estrous state"; "the estrous cycle"
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References in periodicals archive ?
This paper describes a pattern of continuous polyestrous reproduction for a population of N.
Studies on reproductive patterns are available for several species of Neotropical bats, and particularly in Phyllostomidae this bimodal seasonal polyestrous pattern is frequent: Carollia perspiciuata (Fleming, 1988; Mello & Fernandez, 2000), C.
Yaks are seasonally polyestrous, exhibiting cyclic ovarian activity and estrus from July to November (Sarkar and Prakash, 2005; Sarkar et al.
One issue that remains unclear is whether a monoestrous species is physiologically capable of a switch to polyestrous cycle.
These studies have revealed that this species has polyestrous continuous cycle with the female maintaining pregnancy (approximately 48 days) even devoid of environmental conditions and favorable food supply (Larcher 1981); during pregnancy develops a kind of inverted choriovitelinic placenta (Oliveira et al.
Although both species are polyestrous but cattle will be more useful in ensuring flow of production process due to higher fertility rate.
8); the long intervals of postpartum anestrus in females that give birth not during the mating station, mainly due to their condition of seasonally polyestrous and short-day breeders (7-9); a lower population of preantral follicles, approximately 10 times less than that in cows, affecting superovulation programs (7,9,10) and a longer gestation (7).
Goats are seasonally polyestrous, which means they are considered seasonal breeders, with the optimum breeding time being during the fall.
banderanus likely occurs year-round with the reproductive pattern reported to be continual polyestrous (Mendoza Duran and Miranda, 2002; Arroyo-Cabrales, 2005).