oestrous cycle


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oestrous cycle

n
(Biology) a hormonally controlled cycle of activity of the reproductive organs in many female mammals. The follicular stage (growth of the Graafian follicles, thickening of the lining of the uterus, secretion of oestrogen, and ovulation, is succeeded by the luteal phase (formation of the corpus luteum and secretion of progesterone), followed by regression and a return to the first stage. See oestrus
References in periodicals archive ?
Adiponectin expression in the porcine ovary during the oestrous cycle and its effect on ovarian steroidogenesis.
The oestrous cycle of female Rattus (Mastomys) natalensis (Smith) as observed in the laboratory.
Changes in the vaginal epithelium of the guinea-pig during the oestrous cycle.
2[alpha]] and its synthetic analogues are capable of causing luteolysis when administered between 5th day and 16th day of oestrous cycle (Schams and Karg 1982).
Effects of stage of oestrous cycle and progesterone supplementation during culture on maturation of canine oocyte in vitro.
Association of fertility with numbers of antral follicles within a follicular wave during the oestrous cycle in beef cattle.
26) In a study of oestrous cycle in goats there was significant positive correlation between total protein & globulin.
Blood levels of progesterone and 15-keto-13, 14-dihydroprostaglandin F2a during the normal oestrous cycle and early pregnancy in heifers.
Follicular population during the oestrous cycle in Nili-Ravi buffaloes undergoing spontaneous and PGF2a induced luteolysis.
Increase in ovulation rate after treatment of ewes with bovine follicular fluid in the luteal phase of the oestrous cycle.
In studies performed on female rats, it has been indicated that AAS applications cause disorders in oestrous cycle and delay the beginning of puberty by affecting FSH synthesis as same as LH synthesis in male rats (Gerez et al 2005, Mobini Far et al 2007).
The oestrous cycle is functionally under the direct regulation of the pituitary ovarian hormone; FSH, estrogen, pregesterone, and Luteinizing hormone (LH) which usually peaks during the oestrous phase of the cycle (Campbell, 2009).