Changes in the concentration of follicle stimulating hormone and estradiol in domestic cats during estrus cycle and in applying of synthetic analogue of progesterone
Journal Title: Біологія тварин - Year 2015, Vol 17, Issue 1
Abstract
The article presents data on changes in the concentration of follicle-stimulating hormone in the blood of domestic cats during the estrous cycle and the relationship with the concentration of estradiol in serum depending on ovulation. Cats, which induced ovulation follicle stimulating hormone concentration gradually increases during estrus reaching the maximum value to the fourth day and 2.7 ng/ml, and then gradually decreases to the 10th day of the cycle reaching basal levels. The concentration of estradiol also increased to 42.3 pg/ml fifth day of the cycle, and then rapidly decreases and reaches to the 10th day of the basal value. Cats in which ovulation was induced levels of follicle stimulating hormone was increased by two peaks on the 4th and 10th day of the experiment — 2.6 and 1.8 ng/ml, respectively. This increase coincides with peaks of estradiol concentration in the serum in the same group. The animals which has normal estrous cycle the estradiol levels in serum increased to maximum values — 46.5–47.0 pg/ml to the eighth day of the first manifestations of estrus, coinciding with increasing concentrations of follicle stimulating hormone. Animals treated with megestrol acetate did not show signs of estrus phase transition to, and the low levels observed concentration as follicle stimulating hormone and estradiol. Restoration of the estrus cycle in cats receiving megestrol acetate experienced an average of 10–14 days. Action proliheston was faster and much longer — up to 6 months, due to its deposition in subcutaneous adipose and gradual release over a long period.
Authors and Affiliations
Yu. Shcherbakova
Keywords
Related Articles
- EP ID EP353173
- DOI -
- Views 107
- Downloads 0
The quality of products of slaughtering at the oscillatory regime of feeding young pigs
The quality of pig carcasses, chemical composition and the physico-chemical indexes of the meat and pork fat have been researched under conditions of different regimes of feeding Poltava Meat breed young pigs: normalized...
Alkali metal ions and quality parameters of native and thawed semen
The research results aim to clarify the characteristics of relationship between Ca2+, K+, Na+ concentration parameters in semen plasma, spermatozoa and their ratios in the bull semen of different breeds and age with qual...
Immune status of calves during early postnatal ontogenesis under the influence of pyridoxine hydrochloride supplementation
For the aim to study the immune status of calves under the influence of pyridoxine hydrochloride six groups of newborn calves with 5 animals in each group were formed. The calves from control group received basic diet. T...
Hematological changes and resistance of erythrocytes of horses in response to 32 km races
The objective of the present study was to investigate the alterations of some hematological parameters (hematocrit (HCT), hemoglobin concentration (HGB), the count of red blood cells (RBC), mean corpuscular hemoglobin co...
Biochemical markers of the functional liver state in rats with toxic hepatitis under the conditions of germanium citrate administration
Activity of rats’ liver marker enzymes under the conditions of acetaminophen-induced toxic liver injury and influence of germanium citrate was studied. Hepatitis was modeled in these rats by per os acetaminophen administ...