polyestrous


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Related to polyestrous: Oestrus

polyestrous

[¦päl·ē′es·trəs]
(physiology)
Having several periods of estrus in a year.
References in periodicals archive ?
amplus on the Llanos versant contrasts with those polyestrous patterns reported by Sosa and Ramoni-Perazzi (1995) in a locality on the Maracaibo Lake versant, where rainfall has two peaks in April-May and September-October, A.
TABLE 10-1 Ovarian cycles of different mammalian species Classification Classification Length of Cycle Species (Estrus) (Ovulation) (Days) Human Menstrual Spontaneous 24-32 cycle Cattle Polyestrous Spontaneous 20-21 Swine Polyestrous Spontaneous 19-21 Sheep Seasonally Spontaneous 16-17 polyestrous Horse Seasonally Spontaneous 20-22 polyestrous Rabbit Polyestrous Induced 1-2 (non-mated) 14-15 (infertile male) Rat Polyestrous Spontaneous 4-5 (non-mated) 13-14 (infertile male) Dog Monoestrous - Spontaneous 84-252 polyestrous Follicular Luteal Phase Species Phase (Days) (Days) Human 10-14 12-15 Cattle 2-3 18-19 Swine 5-6 15-17 Sheep 1-2 14-15 Horse 5-6 15-16 Rabbit 1-2 0 (non-mated) 13 (infertile male) Rat 2 2-3 (non-mated) 11-12 (infertile male) Dog 18 63
No Absolutes in a Biological System As a rule, most mares are seasonally polyestrous. This means that during a specific season of the year, mares experience several reproductive cycles.
* Polyestrous (pohl-e-ehs-truhs) Each estrous cycle is immediately followed by another estrous cycle.
The water buffalo is the polyestrous animal and the sexual activities occur all round year but it shows a distinct seasonal variation in the display of estrus and conception rate (Singh and Nanda, 1993).
Those for nonvolant mammals were continual polyestrous (10 species, 28.6%), seasonal polyestrous (4, 11.4%), and seasonal monoestrous (3, 8.6%).
Polyestrous A pattern of reproductive activity in which females express more than one estrous cycle in a year.
Chinchillas are seasonally polyestrous. The female cycles every 28 to 35 days.
Females are seasonally polyestrous and most do not have reproductive cycles during the winter months.