Blood determination method:

During estrus, the female dog’s vagina often drips with blood. Counting from the first time you see blood dripping from the vagina of a bitch in estrus, it is generally more appropriate for a primiparous bitch to be bred for the first time on the 11th to 13th day; for a multiparous bitch, it is more appropriate to be bred for the first time on the 9th to 11th day. suitable. For every two years more age of a female dog or four more litters, the first breeding time should be advanced one day. In short, the best breeding period for most female dogs is 9-13 days after bleeding from the female dog’s vagina. However, there are also a very small number of multiparous bitches whose vaginas stop bleeding within 5-6 days of being in estrus after multiple births, and they can become pregnant within the next 1-2 days of breeding.

How to determine the vulva:

If the exact date of bleeding from the female dog’s vagina is not known during the female dog’s estrus period, the best breeding period can be determined based on the color change of the female dog’s vaginal secretions and the degree of swelling of the vulva. The initial color of the female dog's vaginal secretions is red. When the color changes from red to straw yellow, the best breeding effect is 2-3 days. Breeding is also more suitable when the vaginal edema of the female dog in estrus is significantly reduced and begins to soften. You can also use your hands to open the female dog's vulva for observation. When the vaginal mucosa changes from dark red to light red or pink, it is more suitable for breeding.

Testing methods for male dogs:

During the birth process, a few female dogs do not have vaginal bleeding during estrus, and some older female dogs have less vaginal swelling and less vaginal secretion during estrus. At this time, it is advisable to use the male dog's love test method to determine the best breeding period to prevent missed mating. Generally, the best breeding period is 2-3 days after a female dog is willing to accept a male dog climbing on her. In order to increase the litter rate of the female dog and prevent the female dog from becoming pregnant, a compound breeding method should be adopted, that is, breeding once every 24 hours and breeding 2-3 times in a row to ensure that the female dog is pregnant and improve the economic benefits of dog breeding.