Sentences with phrase «estrus begins»

Margaret Root Kustritz, veterinarian and professor at the University of Minnesota College of Veterinary Medicine, notes that, on average, first estrus begins in female puppies between 10 and 12 months.

Not exact matches

Estrogen (from estrus, meaning «heat» or «fertility») is the dominant hormone for the first week or so after menstruation, stimulating the buildup of tissue and blood in the uterus as the ovarian follicles simultaneously begin their development of the egg.

During estrus, the vulva is soft, but still swollen, and females begin to partake in unusual behaviors.

Girl pups may also go into heat (estrus) as early as 5 to 6 months, while boys begin to get interested in sex during this period.

At the end of proestrus, the follicles begin to slow their estrogen secretions, causing the dog to begin to show the signs of true estrus.

This process is called estrus, or heat, and typically begins around six months of age.

The estrus, or menstrual, cycle of most female canines begins when dogs reach the age of 6 months.

They often begin to develop between six and ten years of age and are caused by the hormone, progesterone, associated with estrus, and reproduction.

After the bitch has begun to show vaginal discharge, signaling proestrus, vaginal cytology should be done every three to four days until she has 90 percent cornified cells (estrus).

When a mother begins the weaning process, she comes into estrus and mates.