Following
estrous cycle monitoring, each A-female was transferred to the cage of a randomly selected nonsibling A-male of the same treatment group for up to 14 days.
During the
estrous cycle, which is associated with the modification of different hormone levels, mainly estradiol and Lh, there are cellular changes on the vaginal epithelium.
Latent inhibition is affected by phase of
estrous cycle in female rats.
To reduce the predation on fawns, it's critical there are enough mature bucks to breed does during the first
estrous cycle. When the majority of newborn fawns hit the ground in a shorter period of time, predators are overwhelmed by the sheer number of fawns.
Andrieu, 1991.Dynamics of ovarian follicular development in cattle during the
estrous cycle, early pregnancy and in response to PMSG.
Extensive animal experimentations have indicated that prepubertal or pubertal exposure of low doses of androgens via aromatization to estrogen results in long-term reproductive consequences including constant
estrous cycles, hyposteroidogenesis, anovulation, and development of cystic follicles at adulthood [14].
Hypothalamic samples from the four groups were obtained on the day of prepuberty (postnatal 21 days, n = 5 per group), onset-puberty (the day of vaginal opening, about postnatal 24 days, n = 5 per group), and postpuberty period (establishment of two regular
estrous cycles, about postnatal 34 days, n = 5 per group).
Galask, "Relationship of vaginal cytology to alterations of the vaginal microflora of rats during the
estrous cycle," Applied and Environmental Microbiology, vol.
Uteri (n = 10) from cyclic mares at the early luteal phase of
estrous cycle were collected postmortem, from April until the end of July at a local abattoir.
Therefore, the aim of this study was to evaluate functional cerebral asymmetries in female rats at two levels of the
estrous cycle and in males.
Thyroxine concentrations are elevated in mares with continue to exhibit
estrous cycle during the nonbreeding season.
No matter which approach is used to obtain fertilization, the selection of apt females involves the determination of the
estrous cycle phase, as female rats typically allow mating only during a certain phase of the
estrous cycle (9).