(n.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.
(n.) A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut.
Example Sentences:
(1) Basal 20 alpha DHP levels remained low until a sharp rise at mid pro-oestrus.
(2) Gilts that had already reached sexual maturity at the time of insemination showed a higher rate of oestrus and better litter size than immature animals.
(3) 2 Metabolism in vitro was high during met-oestrus and di-oestrus and low during pro-oestrus and oestrus; this variation in activity correlated with changes in Vmax of the enzyme without changes in Km.
(4) In spite of small corpora lutea and increased follicular activity, none of the prednisolone treated heifers showed signs of oestrogen influence, and the two animals slaughtered 26 days after the start of treatment, did not ovulate or show signs of oestrus.
(5) Serum concentrations of immunoreactive inhibin in oil-treated rats increased from metoestrus to pro-oestrus and decreased at oestrus.
(6) Only one inoculated goat became pregnant after the third oestrus.
(7) Two peaks of plasma FSH concentration were detected after the onset of oestrus.
(8) Pregnant cows showing oestrus were usually seen interacting with other oestrous cows in the sexually active group.
(9) The labelling index of rat mammary gland during oestrus, pregnancy and early lactation was studied in vitro.
(10) Ovarian activity was controlled for synchronization of oestrus by using progestagen-impregnated intravaginal sponges and multiple ovulations were induced by using exogenous gonadotrophin therapy.
(11) In the three E2 groups, 41.7, 62.5 and 37.5% of animals showed oestrus within 26 h of injection while in the control groups only one animal showed oestrus.
(12) When lergotrile mesylate was given on the morning of pro-oestrus, the LH surge was advanced.
(13) The kinetics of specific antibodies of the blood serum of sheep experimentally infested with 80, 160 and 1000 specimens of Oestrus ovis larvae was examined.
(14) On the basis of gained results it was concluded, that synchronized oestrus ewes on receiving PMSG in anoestrus season the ovarial response was more significant than in autumn breeding season.
(15) Rats were injected on D1 and killed at first oestrus.
(16) The oestrus cycle had no effect on levels of the three steroids measured.
(17) Granulosa cell responsiveness at an early (1-2 h) or late (14-16 h) stage of differentiation following the onset of oestrus [and presumably the LH surge] was studied in 16 cows.
(18) Second, the effectiveness of establishment of a cervical reservoir of spermatozoa, in ewes in which oestrus and ovulation have been controlled, has been re-examined.
(19) administered in a single dose at either 0900 h or 1800 h pro-oestrus, and on the morning of oestrus the rats were killed.
(20) Such transformation of steroid gestagens to oestrogens is likely to offer an explanation for the occurrence of oestrogen effects which had been observed during synchronised oestrus of cattle following oral application of 19-norgestagens.
Ovulation
Definition:
(n.) The formation of ova or eggs in the ovary, and the discharge of the same. In the mammalian female the discharge occurs during menstruation.
Example Sentences:
(1) Eight-week-old virgin untreated female mice were induced to ovulate using equine chorionic gonadotropin (eCG) and human chorionic gonadotropin (hCG), and were then caged with males overnight.
(2) The total content of both thyroid hormones in the oocytes increased throughout most of the ovarian cycle as the oocytes increased in size from less than 2 mg to approximately 6.5 mg by ovulation.
(3) GnRH infusion produced an immediate increase in plasma LH concentrations in the mares that ovulated during the infusion period and LH levels peaked at the time of ovulation.
(4) An experimental model was established in the ewe allowing one to predict with accuracy an antral follicle that coincidentally would either undergo ovulation (6-8 mm diameter) or atresia (3-4 mm diameter) following synchronization of luteal regression and the onset of the gonadotropin surge.
(5) We conclude that plasma LAP measurements have little value in monitoring ovulation induction therapy.
(6) The mean ovulation age for the 728 abortuses was 63.4 days (range 33--109 days).
(7) These results strongly suggest that urinary GAGs determination is a precise method for ovulation detection.
(8) These findings suggest, not only that cAMP production alone is sufficient for ovulation, but also that the receptor specificity of the cAMP production is important for the number of ovulations.
(9) These cells produce a neurohormone which stimulates ovulation.
(10) Following parturition, NONLAC cows averaged 4.0 d to negative EB nadir and 14.3 d to first ovulation.
(11) LH serum levels were measured by radioimmunoassay on 10 women who were near the time of presumed ovulation.
(12) Bactrian camels (63 female female, 8 male male) were used in the breeding season to determine the factors that will induce ovulation.
(13) A dose of 3.75 mg and even 4.0 mg of conjugated estrogen was not sufficient to inhibit ovulation.
(14) During 70 days or so from the time of recruitment until just before the beginning of the cycle during which a follicle is destined to ovulate, folliculogenesis is a continuous process dependent on gonadotrophins but independent of the fluctuations in their concentrations occurring during this time.
(15) In all patients buserelin clearly suppressed ovulation.
(16) Repeated laparoscopy in the same animal throughout the menstrual cycle showed by morphological and hormonal criteria that this technique does not significantly influence follicular growth, ovulation, luteal function or cycle length.
(17) 6-OHDA administered intraventricularly in doses 200-500 mug caused temporary blockade of ovulation.
(18) The data are expressed as percent inhibition of ovulation in the treated vs. the untreated ovaries.
(19) Circular cuts which surgically isolated the medial basal hypothalamus (MBH) from the remainder of the brain did not prevent copulation 4 to 24 h later, but did block reflex ovulation.
(20) In spite of small corpora lutea and increased follicular activity, none of the prednisolone treated heifers showed signs of oestrogen influence, and the two animals slaughtered 26 days after the start of treatment, did not ovulate or show signs of oestrus.