When breeding cows in autumn, gaining weight is crucial. Before the breeding period arrives, imported cows should have a moderate physical condition detected by B-ultrasound. Cows with poor physical condition can adjust the feed ratio appropriately, increase nutrition and feeding frequency, and extend grazing time. Mowing and feeding cows can promote estrus and ovulation in cows.

Imported cows are monitored for follicle status using ultrasound, and attention should be paid to nutritional balance to prevent excessive intake of protein and energy feed, which can lead to obesity in cows and affect the quality of breeding. After observing the follicular condition of imported cows using ultrasound, it is most suitable to breed or fertilize cows.

The use of artificial insemination is an important measure to improve the conception rate of cows, especially the rectal grasping method, which is more effective, or the use of imported cows for B-ultrasound is a better method. During the operation, insert the vas deferens into the cervix 5-7 centimeters flat, then slowly inject semen. After the insemination is completed, slowly pull out the vas deferens to prevent damage to the cow's vagina or semen leakage.

Within 15 days after mating, feed at night with 1-1.5 kilograms of bran and clean water containing a small amount of salt to promote implantation of fertilized eggs. During pregnancy, cows are fed a diet rich in protein, vitamins, and minerals to meet their growth needs as well as the development of the fetus, placenta, and uterus; It is strictly prohibited to feed feed feed that is moldy, spoiled, frozen, toxic, has excessive acidity, or has strong irritants. Imported cattle should be regularly monitored by B-ultrasound to prevent enteritis, miscarriage, weak or stillbirth. The cowshed environment should be quiet to prevent miscarriage caused by excessive fright, crowding, slipping, whipping, or toppling.