How to conduct teasing during artificial insemination in deer

Teasing is a method in which a teaser stag is allowed to contact does within a certain period of time to determine whether the does accept mounting (but the teaser deer is not allowed to actually mount and mate), so as to determine whether the does are in estrus and to determine the specific time for insemination. The accuracy of teasing plays an important role in improving the conception rate of does.

1. Selection of teaser deer

Teaser deer must be young, healthy, docile, and of strong libido. Generally, stags with large testicles secrete more androgen and have a strong libido, so more attention should be paid to observation and note-taking in daily work for selecting teaser deer in the future.

2. Teasing methods

1. Teasing with vasectomized stags Since August 2002, a 3 cm small incision has been made on the posterior side of the epididymis in 5 stags, and bilateral vasectomy was performed; after estrus, semen was collected and microscopically examined and no sperm were found. After 3 years of observation of the effect, there was a certain impact on their libido, and the teasing effect was average.

2. Teasing with penile translocation stags Since August 2002, the penis of 7 stags was translocated 60 degrees, with 3 to the left and 4 to the right. After 3 years of teasing results, they maintained a strong mating desire during teasing, but could not truly mate when mounting, and the effect was very good.

3. Special teaser deer In the healthy production stag herd, deer with relatively short hind limbs are selected and trained as teaser deer. Such deer have normal mounting ability but poor mating ability. During teasing, the teasing personnel must be conscientious and responsible and promptly pull the teaser deer away.

3. Teasing time

Teasing is conducted four times a day at 5:00 in the morning, 10:30 in the morning, 4:30 in the afternoon, and 9:30 in the evening, and each teasing session lasts no less than 20 minutes.

4. Teasing personnel

Teasing personnel are required to be careful, bold, conscientious and responsible, and to keep careful records. When it is found that a teaser deer mounts a doe and the doe stands still, the teaser deer should be pulled away in time, the doe in estrus should be separated, and the insemination personnel should be informed promptly to determine the specific insemination time.