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Corpus Luteum Action on Ovarian Follicular Development After Destruction of Macroscopically Visible Follicles in Ewes
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1971
Year
Corpus LuteumFertilityReproductive HealthGynecologyOvary BearingReproductive BiologyEmbryologyReproductive EndocrinologyReproductive PhysiologyPublic HealthAnimal PhysiologyMacroscopically Visible FolliclesEndocrinologyAnimal ReproductionTheriogenologyDevelopmental BiologyOogenesisAnimal SciencePhysiologyCorpus Luteum ActionFollicular Fluid WeightOvarian Follicular DevelopmentOvarian PhysiologyMedicine
In unilateral ovulating ewes with follicles intact, the follicular fluid weight (FFW) at day 12 of the estrous cycle was greater (p<.05) in the ovary bearing the corpus luteum (CL-O) than in the ovary not bearing the corpus luteum (NCL-O) as averaged over the presence of 1 corpus luteum (1 CL) and more than one corpus luteum (>1 CL). However, when the CL were removed on day 8 of the estrous cycle, the difference in FFW between the CL-O and the NCL-O at day 12 was not significant. When all visible surface follicles were destroyed by cautery the difference between the CL-O and the NCL-O for the FFW and the number of follicles ≥4 mm was greater if the CL was left intact than when removed. The difference in diameter of the largest follicle between the CL-O and the NCL-O was greater in >1 CL than in 1 CL animals. The results of the present study are consistent with the hypothesis that the CL favors follicular development, in part, by means of a local in-traovarian mechanism.