Effect of B-ultrasound on breeding cows

In Heilongjiang Province, especially in the north and west, the winter temperature is often below -30℃, so it is necessary to build cold-proof cowsheds for cows (no ice in the shed, the temperature is kept above 6℃). Pregnant cows should be frequently checked and guided by B-ultrasound.

Strengthen the feeding and management of breeding cows in winter, and use B-ultrasound to check cows regularly. It can improve the reproduction rate and increase the birth weight and weaning weight of calves. The winter feed for pregnant cows is mainly wild hay, dry corn stalks, bean skins and bean kisses, silage, etc. Attention should be paid to crushing bean stalks, crushing dry corn stalks and micro-storage, screening bean skins and bean kisses, and checking before feeding. They should not contain iron nails, iron wires, broken glass, plastic ropes and plastic cloths, soil, etc., and feed according to the dregs, feed less and add more frequently. In summer, prevent hay and straw from being rained (it is best to build a straw shed). It is strictly forbidden to feed rotten, moldy and frozen feed. Do not drink cold water with ice in winter. Manage the bad cows on the top rack separately. Use cattle B-ultrasound to check breeding cows frequently to prevent accidents such as miscarriage.

When feeding poor quality roughage, attention should be paid to supplement concentrate feed, and the cows should not lose weight. Use cattle B-ultrasound to monitor the back fat of cows before leaving, and make timely supplementary feed. The weight gain should be maintained at 45-70kg during the dry period. Generally, 10-12kg of hay roughage (or 15-20kg of silage) is given every day to ensure that the cows are full, and 1.5-2kg of mixed concentrate, 50g of calcium, and 50g of salt are supplemented.

Adjustment of calving time. Use cattle B-ultrasound to predict the expected date of delivery. It is best to adjust the calving time of breeding cows to daytime, when the temperature is more suitable, it is easy to find the cows in labor and assist in delivery in time, and improve the survival rate of calves. You can try the following method: start to postpone the feeding time from 5 pm to 9 pm 2 weeks before the cow calves. This method can make most of the cows give birth during the day.

The role of cattle B-ultrasound in autumn cow breeding

When breeding cows in autumn, fattening is very important. Before the breeding period, cattle B-ultrasound should detect that the cows of suitable age should have a medium body condition. For cows with poor body condition, the feed ratio can be adjusted appropriately, nutrition and supplementary feeding times can be increased, and the grazing time can be extended. Cut grass to feed cows to promote estrus and ovulation. Use cattle B-ultrasound to monitor the condition of follicles. At ordinary times, pay attention to nutritional balance to prevent excessive intake of protein and energy feed from causing excessive obesity in cows, which affects the quality of breeding.

After using cattle B-ultrasound to observe the condition of follicles, it is most appropriate to breed or inseminate cows. Artificial insemination is an important measure to improve the conception rate of cows, especially the rectal grasping method is more effective, or a better method when using cattle B-ultrasound. During the operation, insert the vas deferens 5-7 cm into the cervix, 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 outflow.

Feed at night within 15 days after mating, and add 1-1.5 kg of bran, and provide clean drinking water containing a small amount of salt to promote the implantation of fertilized eggs. During the pregnancy of the cow, feed rich in protein, vitamins and minerals to meet the needs of the cow's growth and the development of the fetus, placenta and uterus; it is strictly forbidden to feed moldy, deteriorated, frozen, toxic, overly acidic or highly irritating feed. Use cattle B-ultrasound monitoring frequently to prevent enteritis, miscarriage, weak fetus or stillbirth. The cowshed environment should be quiet to prevent miscarriage caused by excessive fright, collision, slipping, whipping or racking.

link: https://www.bxlimage.com/nw/770.html