Progesterone is an important reproductive hormone and measurement of its level by repeated blood samplings is beneficial to monitoring of estrus cycle. However, since toy poodles have a small body size and thin-walled blood vessels, repeated blood samplings cause stress and affect their preparation for mating or artificial insemination (AI). Therefore, a noninvasive method for monitoring proges...

This experiment was designed to test the following two hypotheses: (1) beef cows unilaterally ovariectomized will ovulate more viable ova at the first post-operative estrus than intact animals when all are given human chorionic gonadotropin (HCG) at estrus, and that (2) this result is more likely if the CL-containing ovary is not removed. Thirty-five Angus and Anguscross cows were assigned rand...

The Indian sheath-tailed bat, Taphozous longimanus at Nagpur (Maharashtra State) shows continuous asynchronous breeding, exhibiting aseasonal polyoestry. The adrenal gland of Taphozous is made up of the steroidogenic and chromaffin cells. The ultrastructural features of the glomerulosa cells during estrus are inconspicuous Golgi complex mitochondria with vesicular cristae, a few lipid droplets ...

Estrous cycle is one of the placental mammal characteristics after sexual maturity, including estrus stage (ES) and diestrus (DS). important in female physiology its disorder may lead to diseases, such as polycystic ovary syndrome, ovarian carcinoma, anxiety, epilepsy. In latest years, effects non-coding RNAs messenger RNA (mRNA) on estrous have started arouse much concern, however, a whole tra...

Pöppl A.G., Valle S.C., González F.H.D., Kucharski L.C. & Da Silva R.S.M. 2016. Insulin binding characteristics in canine muscle tissue: effects of the estrous cycle phases. Pesquisa Veterinária Brasileira 36(8):761-766. Setor de Clínica de Pequenos Animais, Hospital de Clínicas Veterinárias. Departamento de Medicina Animal, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, A...

24 Irritable bowel syndrome (IBS) is often seen in women and symptom severity is known 25 to vary over the menstrual cycle. In addition, activation of the hypothalamic-pituitary26 adrenal (HPA) axis enhances symptomology and patients with IBS have increased 27 activation of the amygdala, a brain region known to facilitate HPA output. However, little 28 is known about the effects of amygdala act...

I MPROVED methods for producing the various steroid hormones have increased their availability for experiments with large domestic animals and have made it possible to study their effects on the pituitary, on the reproductive organs and on the modification of the estrous cycle. Asdell, de Alba and Roberts (1945) found that estrus could be induced in ovariectomized heifers by injections of 600 R...

A study was done to test whether ovulatory follicles destined to form subfunctional corpora lutea differed from normal ovulatory follicles in steroidogenic function. Twenty-five ewes were treated with prostaglandin F2 alpha on d 11 of the estrous cycle, then unilaterally ovariectomized before (n = 13) or after (n = 12) the surge of luteinizing hormone (LH) at the induced estrus to collect "cont...

Melanocortin- 4 receptor (MC4R) and agouti- related peptide (AgRP) are involved in energy homeostasis in rats. According to MC4R and AgRP effects on luteinizing hormone (LH) secretion, they may influence the estrous cycle of rats. Therefore, the aim of this study was to investigate the expression of MC4R and AgRP mRNAs at different stages of estrous cycle in the rat’s hypothalamus. The estrous ...

As production schedules become more intense, greater demands are placed on the reproductive system of the gilt and sow. Compared with their predecessors, today’s female swine are expected to attain puberty at an earlier age, breed and become pregnant the first time they are mated by the boar, farrow larger litters, wean a larger number of heavier pigs, return to estrus in a shorter time period ...