When does a Labrador go into estrus? Generally, female dogs go into estrus twice a year. There will be special signs when they are in estrus. The following editor will introduce you to the care methods for Labrador during estrus.

Methods for caring for Labrador during estrus:

Like other dogs, Labrador only goes into estrus twice a year, usually from March to May in spring and September to November in autumn. When the female Labrador goes into estrus, Characteristic signs may occur physically and behaviorally. It mainly manifests itself in the following stages.

Pre-estrus

It is the preparation stage for estrus, which takes about 7-10 days. The reproductive system begins to prepare for ovulation. The egg is close to maturity, the reproductive tract epithelium begins to proliferate, glandular activity begins to intensify, secretions increase, the vulva is congested, the vulva is swollen, flushed, wet and lubricated, and mucus mixed with blood flows. Male Labradors often come by smell, but female Labradors are not allowed to mate.

Estrus

It is the period when the signs of estrus are most obvious and mating is accepted, lasting about 6-14 days. The outside continues to swell and soften, the mucus flowing out becomes lighter in color, and the bleeding reduces or stops. The female dog takes the initiative to approach the male Labrador. When the male Labrador climbs over, she takes the initiative to step down on her waist, face the male Labrador with her buttocks, tilt her tail to one side, and open and close her vulva to allow mating. 2-3 days after estrus, the female Labrador begins to ovulate, which is the best period for mating.

Late stage of estrus

The swelling of the vulva subsided and gradually returned to normal. Her temperament became quiet. She was not allowed to become quiet and male dogs were not allowed to approach. It usually lasts for two months and then enters the anestrus period. If you are pregnant, the period after estrus is the pregnancy period.

Blood determination method

During the female Labrador's estrus, the female dog's vulva can secrete blood. Counting from the first time the female Labrador's vulva is seen in estrus, the first-time female Labrador will generally secrete blood after that. It is more appropriate to breed for the first time on the 11th to 13th day. It is more appropriate for multiparous female dogs to be bred for the first time on the 9th to 11th day afterward. For every 2 years of age or 4 litters of parity, the first breeding time will be advanced by 1 day. In short, the best breeding period for most female dogs is 9 to 13 days after bleeding from the female dog’s vagina. However, there are also a very small number of multiparous female dogs whose vaginas stop bleeding after 5 to 6 days of estrus. , you can get pregnant on the 6th to 8th day after breeding.

Method to determine vulva

If the date of bleeding from the female Labrador’s vagina is not discovered in time 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 vulva swelling. The initial color of the vaginal secretions of female dogs is red. The best breeding period is 2 to 3 days after the color of the vaginal secretions changes from red to straw yellow. In addition, when a female Labrador is in estrus, the vulva will be swollen and congested obviously. When the edema of the vulva is significantly reduced and begins to soften, it is more suitable for breeding. It can also be opened by handObserve the female dog's vagina. When the vaginal mucosa changes from dark red or red to light red or pink, it is more suitable for breeding.