B-ultrasound for cows to detect the condition of cows in the early lactation period

The period within 15 days after the cow gives birth is called the early lactation period. During this period, the main characteristics of the cow's body are: the adverse effects of the fetus's metabolic products in the mother's body have not completely disappeared; the functions of the lactation system and circulatory system have not yet reached full normality; some cows' udders are still edematous and their digestive functions are still declining; the cow's B-ultrasound shows that the uterus has not fully recovered to normal and lochia is still being discharged. At this time, the cow begins to lactate and consumes a lot of calcium in the body. Therefore, during this period, it is necessary to promote the recovery of the cow's physique as soon as possible to lay a good foundation for the cow's lactation peak period. The faster the uterus recovers through B-ultrasound observation, the better the lactation of the cow will be.

Reasonable arrangement of drinking water. After giving birth, the cow will experience excessive water loss. At this time, it is necessary to give water supplement immediately. Bran porridge should be prepared and fed when it is warm.

Create good environmental conditions. The delivery room where the cow gives birth should be clean and hygienic. The cowshed should be warm in winter and cool in summer, and there should be no "draft" in the shed. The cow bed must be kept clean and dry, and the straw should be properly laid and changed frequently. After giving birth, the cow should have sufficient free exercise space, and the exercise space should have enough sunlight and be sheltered from the wind. At the same time, the disinfection work inside and outside the shed must be done well to prevent bacterial infection. Within 4-5 days after giving birth, the cow's hindquarters should be disinfected once a day, focusing on the buttocks, tail root and vulva. Each time the disinfection and flushing is done, the lochia must be thoroughly washed away, and the cow B-ultrasound should be used to observe the status of uterine cleaning. If the cow is found to have lochia occlusion, it should be treated in time to prevent the occurrence of postpartum sepsis or metritis and other diseases.

Ultrasound for cows to monitor the insemination process of cows

The best time for breeding after estrus, most cows last for estrus for 10-24 hours, and the best time for insemination of cows is the end of estrus or 6 hours before ovulation. At this time, rectal examination or B-ultrasound examination for cattle can feel that the follicles protrude from the surface of the ovary, with thin walls, elasticity, and fluctuations, like ripe grapes, which feel like they will burst at the touch. During external observation, the cow stands still, accepts mounting, and the vulva flows out transparent mucus with strong stringiness. This is the best time for insemination. Insemination can also be performed after observation with B-ultrasound for cattle. In production practice, insemination is generally used twice in one estrus period. Specifically, if the cow is found to be in estrus in the morning, insemination is performed once in the evening and once in the morning of the next day; if the cow is found to be in estrus at noon, insemination is performed once in the morning and afternoon of the next day; if the cow is found to be in estrus in the afternoon, insemination is performed once at noon and at night of the next day.

Selection of insemination site, the insemination gun passes through the cervical opening and reaches the bottom of the uterine body for insemination. In this way, no matter which ovary ovulates, it can ensure that sperm reaches the fertilization site. If the rectal examination technique is proficient, or B-ultrasound for cattle is used for observation, the location of the follicle can be determined, and semen can also be inseminated to the base of the uterine horn on the side of the follicle.

Precautions for insemination are as follows. ① When grasping the uterus through the rectum, if the rectal wall is too tense, do not grasp it hard. Wait for a moment and wait for the intestinal wall to relax before grasping it to avoid rectal rupture or damage. This can also be done under the guidance of B-ultrasound for cattle.

② When the cow swings violently, the insemination gun should be relaxed and the hand should move with the cow's swing to avoid the insemination gun damaging the inner wall of the reproductive tract.

③ After the insemination device enters the vagina, when it is blocked from moving forward, the hand in the rectum should push the cervix slightly forward and straighten the vagina. Do not forcefully insert it to avoid vaginal damage.