Females will urinate to indicate fertility during the appropriate phase of their estrous cycle, as well as to indicate their lack of fertility when harassed by males.
42.
In cows, a complete estrous cycle lasts 21 days . Most commonly, dairy producers discuss the estrous cycle as beginning when the cow is receptive to breeding.
43.
In cows, a complete estrous cycle lasts 21 days . Most commonly, dairy producers discuss the estrous cycle as beginning when the cow is receptive to breeding.
44.
In captivity, estrous cycles recur every 15 days . The gestational period is around 440 to 450 days long, following which usually a single calf is born.
45.
The estrous cycle ( also spelled oestrous ) controls when a mare is sexually receptive toward a stallion, and helps to physically prepare the mare for conception.
46.
In regular intervals coinciding with each estrous cycle ( after puberty, of course ), a number of these primordial follicles start to develop in a process called folliculogenesis.
47.
She provided three groups of rats with airborne odors from female rats in three different phases of the estrous cycle : ovulatory phase, follicular phase, and luteal phase.
48.
The estrous cycle, also known as " season " or " heat " of a mare occurs roughly every 19 22 days and occurs from early spring into autumn.
49.
Thus in American English, a mammal ( humans included ) may be described as " in estrus " when it is in that particular part of the estrous cycle.
50.
Vitamin A deficiency in mice has been shown to cause problems with spermatogenesis, irregular estrous cycles, changes in the uterine epithelium and reproductive failure ending with fetal death and reabsorption.
