Ovarian Follicular Atresia of Ewes during Spring Puerperium
نویسندگان
چکیده
منابع مشابه
Ovarian Follicular Atresia of Ewes during Spring Puerperium
The distribution of healthy and atretic follicles on the ovarian surface of improved Valachian ewes 17, 24, and 32 days postpartum is reported in this study. The number of healthy follicles was higher on day 24 postpartum and their mean diameter tended to increase to day 32 (P < 0.05) with the greatest diameter of 5 mm. 78-81% of atretic follicles ≥3 mm in diameter was observed where apoptosis ...
متن کاملOvarian Follicular Atresia
Throughout ovarian development and function in mammals, a highly orchestrated, periodic process known as follicular atresia occurs that destroys and eliminates follicles and oocytes from the ovary. Follicular atresia is pervasive. In humans, it is estimated to account for 99.9% of the loss of oocytes from development of the fetal ovary until reproductive senescence (Baker, 1963; Faddy et al., 1...
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The reproductive performance of any mammalian species can be enhanced by enriching nutrition, regulating environmental factors like photoperiod, temperature, humidity etc., through selective breeding, endocrine manipulations and better management practices (Sharma, 2000; Maillet et al., 2002; Bussiere et al., 2002; Iwata et al., 2004, 2005; Rudolf, 2007; Bhardwaj and Sharma, 2011). The endocrin...
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Physiological cell death mechanisms (termed apoptosis, programmed cell death, active cell death, and biological cell death) play a fundamental role in the cyclic function of the ovary as it strives in each cycle to ovulate a viable egg for fertilization. Healthy ovarian follicles and corpora lutea are also required for the secretion of steroids to prepare the female reproductive tract for embry...
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Mammalian ovarian follicular development and atresia is closely regulated by the cross talk of cell death and cell survival signals, which include endocrine hormones (gonadotropins) and intra-ovarian regulators (gonadal steroids, cytokines and growth factors). The fate of the follicle is dependent on a delicate balance in the expression and actions of factors promoting follicular cell prolifera...
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ژورنال
عنوان ژورنال: Veterinary Medicine International
سال: 2012
ISSN: 2090-8113,2042-0048
DOI: 10.1155/2012/638928