Pigs artificial insemination technology must grasp four key links
In recent years, with the rapid development of the pig industry, the amount of pigs raised has been increasing year by year. The technique of artificial insemination of pigs has been widely used and has been welcomed by a large number of farmers. In order to better promote the comprehensive development of pig artificial insemination technology, improve the fertility rate and reproduction rate of pigs, and serve the majority of farmers, we summarize the experience gained in practice and focus on the following four technologies for pig artificial insemination. The key link: First, strict mining. The sperm of the pig is generally held by hand. Semen collection equipment must be strictly sterilized before cooking, using steaming method. When the sperm is collected, the picker stands on the right rear side of the picking station. When the boar climbs on the picking table, the picking staff squats and holds the penis of the penis with his hand when the penis is extended. In particular, to grasp the spiral part, the pressure should not be too great to control its glans cannot be turned or retracted, and it has an elastic rhythm to stimulate ejaculation. When the boar is full of excitement and the glans escalate frequently, it means that they will ejaculate. When the boar begins to ejaculate, it is mostly refined and should not be collected. When a thicker milky white semen is to be injected, the collection cup should be immediately placed on the glans of the penis to collect the semen collected in the collection cup. After the shot is finished, when the boar retreats from the sperm collection table, the sperm extractor should hand the penis to the foreskin. In the winter harvesting, attention should also be paid to insulation to prevent the sperm from suffering cold attacks. Second, the dilution and preservation of semen. In the grass-roots rural areas, semen storage time is generally about 2 days. However, to carry out dilution preservation, the diluent is prepared as follows: glucose-sodium citrate with a dilution ratio of 1:1 or 1:2. After the semen and diluent are incubated at the same temperature, the semen is slowly poured into the diluent along the cup wall. in. Semen is stored at room temperature at about 14 degrees, and it can be maintained at level 0.6 or above for two days. The preservation method is to fill the diluted semen into a 40 ml vaccine bottle and seal it with liquid paraffin. In the summer, the semen bottle can be stored in a dry well or a wide-mouth thermos bottle for preservation. Third, grasp the timely infusion time. In principle, adopt the “older with early, small late, not the middle with the middle†approach, that is, the old sow on the day of heat, the gilt on the 3rd day of heat, the middle sow on the 2nd day after heat. Specific performance: After estrus in the sow, in the emergence of congestive mucosal vulvar swelling subsided, vulva dry, slightly wrinkled, hand sow back, sows do not stand, concave waist arch back, hand touch and vulva tail upturn, that is The best insemination period. In addition, the breeding time of the local breed sows was 2 to 3 days. The cultivar pigs were on the 2nd day of heat, and the hybrid pigs were better in the afternoon on the 2nd day after the heat to the 3rd day after the heat. Fourth, insemination process. Before insemination, the semen is slowly placed in water at 35°C to allow the sperm to fully resuscitate. After microscopic examination, the spermatozoa vitality must be above 0.5 to use. In insemination, first apply a small amount of paraffin wax or Vaseline to the sterilized insemination plastic tube, then the inseminating person opens the female vampire with one hand and inserts the vas deferens tube into the vagina. When inserting it, first insert it obliquely at an angle of 45 degrees to avoid it. Urethral opening, the vas deferens along the vaginal wall upward, forward, counterclockwise rotation to the first fold of the cervix, when the hand feels a certain resistance, gently pull the output tube there is a certain resistance, can be guided The syringe with suction on the semen slowly pushes the syringe plug into the semen slowly, and after the semen has been fed in, gently pull out the deferens. If insemination occurs in the winter, the syringe must be held in the hand to keep the sperm in the syringe free from external cold. At the same time, the assistant is required to rotate the insemination tube and gently show the pit and genital area of ​​the tail of the sow to prevent backflow of the semen. 40 milliliters of insemination, insemination once every 12 hours. With low-power, miniature size, the serial communication department range sensor with mm accuracy can measure up to 20m, 40m, 60m, 100m, 150m, 200m. Serial Laser Distance Sensor,Serial Communication Laser Distance Sensor,Laser Range Sensor Boards,Distance Sensor Panel Chengdu JRT Meter Technology Co., Ltd , https://www.infrareddistancesensor.com
If you want to connect our laser range sensor boards together with your computer, you can directly choose the model with one USB connector.
In your project, you can use our distance sensor panel to measure a distance.
