PITUITARY LH CONTENT AND REPRODUCTIVE TRACT CHANGES DURING THE MOUSE OESTROUS CYCLE
نویسندگان
چکیده
منابع مشابه
Changes in phospholipids, cholesterol and protein content of oviduct fluid of cows during the oestrous cycle.
The oviducts of 4 cows were cannulated and oviduct fluid was collected daily from the exteriorized cannulas for a total of 5 oestrous cycles. Daily serum samples were assayed for oestradiol-17 beta and progesterone to monitor the oestrous cycle. Data for each cycle were compared for oviduct fluid collected during the non-luteal phase (serum progesterone less than or equal to 1.5 ng/ml) and the ...
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To obtain detailed information about the histological changes occurring in the mouse nipple during the reproductive cycle, we examined and quantified the S-phase of cell by immunohistochemical staining with bromodeoxyuridine (BrdU), and analysed histologically the subepithelial fibrous elements. The nipple markedly increased in size dramatically on days 15-18 of pregnancy. The densities of cell...
متن کاملPlasma concentrations of LH, progesterone and oestradiol during the oestrous cycle in swamp buffaloes (Bubalus bubalis).
Plasma concentrations of LH, progesterone and oestradiol were measured in 5 cyclic swamp buffaloes. Progesterone levels began to increase after Day 5 (Day 0 = the day of oestrus) and reached a plateau after Day 10. A rapid decrease in progesterone levels occurred during the 5 days before oestrus, followed by a sustained increase in oestradiol concentrations. Basal LH levels decreased towards th...
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Difficulty in observing oestrus is a problem for many dairy farmers performing AI. Finding ways to synchronize oestrous cycles or strengthen display of oestrus without hormonal treatments would be of great interest because many consumers object to the use of exogenous hormones on healthy animals. Modification of reproductive cycles through chemical communication has been reported in several spe...
متن کاملThe effect of feed level during the oestrous cycle on ovulation, embryo survival and anterior pituitary LH potency in the gilt.
A series of experiments was conducted to investigate the effect of basal feed level and increased feed intake during oestrus on ovulation rate, early embryo survival, and residual pituitary LH potency in the pig. All the gilts used were fed 1\m=.\8kg food/day from puberty to second heat. Gilts whose food intake was reduced from 1\m=.\8kg to 1\m=.\4 kg/day following second heat had more atretic ...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1969
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0190215