Oestrus


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Related to Oestrus: oestrous cycle, Oestrus ovis

Oestrus

 [es´trus]
a genus of botflies. O. o´vis deposits its larvae in the nostrils of sheep and goats and can cause ocular myiasis in humans.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Oestrus

(es'trŭs),
A genus of tissue-invading flies that cause myiasis in sheep; the head botflies in the family Oestridae. Oestrus ovis (a nose fly) is a grayish brown, robust, hairy, beelike botfly, imported from Europe, and now a serious pest in parts of the U.S.; larvae are deposited by the adult fly in the nostrils of sheep, and inch-long larvae develop in the paranasal sinuses, causing considerable mucous discharge and distress in old or weak sheep.
[G. oistros, gadfly]
Farlex Partner Medical Dictionary © Farlex 2012

oestrus

(ĕs′trəs)
n.
Variant of estrus.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

es·trus

(es'trŭs)
That portion or phase of the sexual cycle of female animals characterized by willingness to permit coitus; readily detectable behavioral and other signs are exhibited by animals during this period.
Synonym(s): estruation, heat (2) , oestrus.
[G. oistros, mad desire]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Oestrus

A genus of flies whose larvae can parasitize humans and animals. The larvae can attach themselves with hooks to the CONJUNCTIVA and may cause serious damage to the eye.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
The effect of amodiaquine on oestrus cycle, ovarian histology, and oxidative stress makers in regular cyclic Sprague-Dawley rats.
Anita P, Molly M, Ashish KA, Anupam D,Sandeep K, and Kirti J.External Ophthalmomyiasis Caused by Oestrus ovis: A Rare Case Report from India.Korean J Parasitol.
Arney DR, Kitwood SE, Phillips CJC (1994) The increase in activity during oestrus in dairy cows.
During oestrus, mating can go on several hours and after this there is usually a sore in the vaginal area.
Very high amounts of [E.sub.2]-17[beta] were released at oestrus and metestrus but not at other stages of the cycle from ovarian follicles of 600-day-old, diet-restricted rats (Figure 1B).
[k.sub.i] ln [N.sub.0] - ln [N.sub.1] (females not entering oestrus)
Sunquist (1981) once observed the oestrus in a thirty month old female that was perhaps the earliest.
"When I was in the field and observing the baboons, I often noticed that males were directing unprovoked attacks or chases toward females in oestrus," Baniel stated.
While sneezing, larvae of Oestrus ovis were expelled from the nasal cavity.
As the weather gets warmer and the days longer, female cats, whose heat cycles are triggered by daylight hours, come into oestrus, known as season.
Before putting them into a cage with fertile males, vaginal smears were taken and oestrus cycles were observed.
Usually the hormonal protocols for gilts include the use of progestogens to synchronise oestrus before the application of follicle growth and ovulation inductors (DEGEINSTEIN et al., 2008; MARTINAT-BOTTE et al., 2010).