5 major applications of B-ultrasound machines for pigs in sow reproduction

1、 Early pregnancy monitoring of sows using B-ultrasound machines in pig production is a simple and effective method that can reduce costs and bring higher economic benefits. In 1985, B-ultrasound Machines were applied to monitor sow pregnancy, and it was considered a good method for quickly and highly accurate monitoring of sow pregnancy. During monitoring, sows can stand or lie on their side independently without the need for additional protection. The detection site is located in the posterior rib of the sow, on both sides of the nipple. Apply coupling agent locally. No need to shave. Aim the probe at the entrance of the pelvic cavity and scan towards the uterus. When a typical dark area of the gestational sac is seen, it can be confirmed that early pregnancy is positive. Skilled operation can complete the monitoring of a pig in a few seconds.

2、 Ovulation monitoring pigs use B-ultrasound machines to monitor the development and ovulation of follicles, providing scientific basis for determining mating time and improving mating rate. For modern intensive pig farms, centralized breeding and farrowing can be carried out based on ovulation monitoring. For sows whose follicles have not yet developed and matured, B-ultrasound observation can be used to stimulate estrus and synchronize breeding within the same cycle as much as possible, thereby improving productivity and economic benefits.

3、 Predicting gestational age and number of fetuses, monitoring fetal development by measuring various indicators of the fetus to determine the gestational age of the fetus, and predicting the delivery date: using a Pig B-ultrasound machine to predict the number of fetuses is a deeper application of Pig B-ultrasound machines, which requires certain operational experience. The application of pig B-ultrasound machine for regular tracking and monitoring of pregnant sows can not only monitor the development of the fetus, but also timely detect abnormal conditions such as stillbirth and postpartum uterine involution.

4、 The determination of Backfat thickness and Eye muscle area in live pigs is directly related to lean meat percentage. As two important indicator parameters in the genetic breeding and performance identification of pigs, their precise determination is of great significance. The application of pig B-ultrasound machine to measure pig backfat thickness and eye muscle area can accurately select measurement points, which is a prerequisite for the reliability and accuracy of the measurement results. The use of B-ultrasound machines in pigs can accurately measure the backfat thickness and calculate the eye muscle area of live pigs without damaging their reproductive performance, greatly improving the scientificity and accuracy of breeding and selection.

1. Pigs in Baoding. When measuring in the pigsty, there is no need for special fixation when measuring in the limit column: the pigs can stand naturally or be fed with appropriate concentrate and kept quiet. If operating in the wild, iron bars can be used to limit the position or a pig puller can be used to cover the mouth and secure it, allowing it to stand naturally.

2. Measure the location. Fat thickness and eye muscle area can be measured at the same location or on the same ultrasound section. At present, most units in our country measure fat thickness and eye muscle thickness at three points, namely the posterior edge of the scapula, the posterior rib, and the junction of the lumbar spine 4cm away from the midline of the back. Then, the average of the three points is taken. These three locations can also be used to measure the area of the eye muscles, but some people only measure them at a distance of 4cm from the midline of the back of the rib cage.

The tested pig is naturally placed in the Baoding pen using the 3 operating procedures. The measurement position should be cleaned to remove scabs, trimmed, and coated with lotus coupling agent. When measuring backfat, the probe waterproof bag should be placed horizontally on the pig's back. The probe axis should be perpendicular to the midline of the back, and the scanning line at the front end of the probe should be slightly higher than the midline of the back to show the strong echo of the spinous process. To measure the eye muscle area, a probe with a scanning width of 1 Ocm or more should be used. A water bag has been placed between the probe and the pig's back. Then adjust the contrast, brightness, gain and near-field and far-field adjustment buttons of the pig's B-ultrasound machine to obtain a clear ultrasonic sectional image and freeze the image. Use the electronic distance and area measurement function to measure the fat thickness and eye muscle area. Then use the annotation function to add ear number, variety, age, body weight and other data. * * * and print or input them into the computer for storage.

4. Image recognition. Clear ultrasound images can clearly present four strong echogenic points, namely spinous process, vertebral transverse process, and longitudinal muscle membrane of the lateral end of the dorsal longus muscle, as well as four strong vocal folds at the skin interface, adipose tissue, upper and lower muscle membranes of the dorsal longus muscle. The fat layer is a band like solid dark area: the muscle section is a solid dark area with slightly stronger echoes; The measurement points for fat thickness and eye muscle thickness are located 4cm away from the spinous process, and the distance between the skin interface and the two strong echo bands on the upper layer of the muscle membrane is called fat thickness. The distance between the strong echo bands on the upper and lower layers of the muscle membrane is called the solid dark area surrounded by the four strong echo points on both sides and the strong echo bands on the upper and lower layers of the muscle membrane in the muscle thickness eye muscle area measurement area. Backfat thickness measurement. In the ultrasound image, 3-4 distinct strong echo bands can be seen, with the first being the ultrasound reflection at the skin interface, the second being the fascial reflection between lipids, and the third being the ocular muscle membrane reflection. According to the screen ruler. The vertical distance from the first to the third zone 4cm away from the strong echo point of the spine is called the backfat thickness. When measuring, the number of millimeters of fat thickness after determining the starting and ending points is displayed on the screen.

Measurement of eye muscle area. In ultrasound imaging, the strong reflection of the eye muscle membrane produces a clear and visible approximately elliptical eye muscle contour. Due to the fact that the upper and lower bounds of the ocular fascia are aligned with the ultrasound emission line, a linear boundary is generated; however, only point like echo bands are produced at both ends. When measuring, first determine the elliptical short axis of the upper and lower bounds, and then determine the elliptical long axis at both ends. The square centimeter value of the approximately elliptical eye muscle area is displayed on the screen.

5、 Disease diagnosis: Many diseases in pig farms

Preliminary diagnosis can be made using a Pig ultrasound machine, especially for reproductive tract diseases. pigs use B-ultrasound machines to monitor ovarian dysfunction or diseases, uterine diseases, as well as testicular and accessory gland diseases in boars. Other diseases such as liver and kidney lesions, internal and external masses, etc. can be diagnosed with characteristic features using ultrasound machines in pigs.

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