Analysis of the application of portable veterinary ultrasound system for pregnancy diagnosis in dairy cows

portable veterinary ultrasound system for pregnancy diagnosis in dairy cows

As dairy farming industry continues to develop and progress, along with a new generation of dairy farmers in China, the portable veterinary ultrasound machine is one of the new application technologies. As time goes by, it is being used more and more widely in the dairy farming industry, and this new technology is easily accepted by the majority of dairy farmers, with plenty of room for future applications. However, many farms do not have personnel dedicated to the maintenance of portable ultrasound machines, resulting in poor use of the instrument, the instrument has been damaged to varying degrees and other situations have occurred.

Application of portable veterinary ultrasound machine in cattle farms

The technician operating the ultrasound machine should be systematically trained to understand the basic operating procedures, and the technician should also be skilled in performing rectal examinations. Rectal examination is the main way to conduct pregnancy diagnosis, and the smooth operation of veterinary ultrasound machine examination requires coordination between cattle, people and ultrasound machine, and the specific steps are as follows:

Conditions of use of the portable veterinary ultrasound machine

Before using the ultrasound machine to do the inspection must understand clearly the specific environmental conditions, ultrasound machine working environment should be maintained at 10 ℃ ~ 40 ℃, the relative humidity in the case of non-condensing to maintain 30% ~ 75%, too much humidity both affect the ultrasound imaging effect, but also reduce the service life of the ultrasound machine. Altitude should be less than 2000 meters, atmospheric pressure in 700hpa ~ 1060hpa, the surrounding environment can not have flammable gases or flammable liquids, in bad weather as far as possible not to use the ultrasound machine to do the examination. It is worth noting that in the process of using the ultrasound machine, should be used as little as possible or even do not use cell phones, cell phones are equivalent to a strong magnetic field, ultrasound machine also exists a certain electromagnetic field, the simultaneous use of the two will have a negative impact on the ultrasound machine ultrasound imaging, which can seriously lead to a reduction in the life of the ultrasound machine.

Determine the cattle to be examined

Before the inspection, first read the breeding records and general reproductive status of the cattle on the farm, the breeding days of adult cows should be greater than 33 days, and the breeding days of young cattle should be greater than 30 days, the inspection is too early to easily misjudge the imaging, so it is recommended that the uniform inspection in about 33 days of breeding.

Preparation work before inspection

Before the inspection, first of all, you need to wear good and sterilized work clothes, work cap, long leather boots, disposable long-arm gloves, etc. Disposable long-arm gloves should be used after lubrication with paraffin oil or soapy water. Next, the cattle to be inspected to keep well, it is best to use the kick-stop stick, in order to prevent the cattle to cause injury to people, the character of the particularly stubborn cattle is best handled by the second person to assist. Afterwards, the cows' rectum should be emptied as much as possible, as the feces in the rectum will have a direct negative impact on the visualization effect of the examination.

Pregnancy examination work in dairy cows

When diagnosing cows, it is important to understand the composition of the portable ultrasound machine. Bones reflect ultrasound, so they appear white, and ultrasound penetrates body fluids, so they appear black. First of all, the sterilized ultrasound probe "knife" facing down, "knife" should be close to the intestinal wall, facing the uterus, and then slowly inserted into the rectum, if encountered when the cattle produce stimulation nuisance, immediately stop insertion, should be slowly returned with the rhythm of the cattle nuisance ultrasound The probe is then massaged into the rectum of the cow to reduce the irritation response for the next examination. During the slow insertion process, the ultrasound image is also changing, and special attention should be paid when a large black shadow is shown, which is the image of the bladder, and it is an important judgment marker for our examination. When the bladder is full of urine, the uterus will be squeezed to the front, which will interfere with the observation of the pregnancy image and can be examined after urination.

Because of the high rate of early fetal mortality and cow abortion within 60 days after mating, it is recommended that a rectal examination be performed at about 90 days for confirmation of the diagnosis after the 33-day ultrasound examination.

Preservation of portable veterinary ultrasound machine images

When performing pregnancy examinations on cows, repeated scans should be performed on the examined area to obtain the clearest and most representative frame, and then immediately freeze the frame for image storage. The repeated examination must be done gently to avoid irritation to the cow.