1. Castration is appropriate at 7-10 days of age. The castration was too early. The testes of the piglets were small and fragile and difficult to manipulate. When the castration was too late, not only was the bleeding more, the wound was not easy to heal, and the pain reaction was severe, which affected the normal feeding and growth of the piglets. Many people in the production of piglets castrated at 15 days of age, but at this time the castration was not appropriate, because the maternal antibodies obtained by colostrum began to decline at 15 days of age, and the piglets' own immune mechanisms have not yet been perfect, in the immune valley, Castrated at this time, the pathogen easily infected through the wound, causing the disease. 7-10 days old piglets are protected by maternal antibodies. At this time, the castration is easy to operate, the stress response is relatively small, the bleeding is small, and it is not easy to infect the disease.
2. When the epidemic is in danger or when there is an epidemic threat, it should not be cast off. The piglet castration itself is a kind of strong stress, so that the immunity of the piglet is reduced, and the surrounding pathogens can easily invade through the wound, causing the occurrence and epidemic of the disease. Therefore, it is not appropriate to castrate in the epidemic or when there is an epidemic threat.
3. The epidemic prevention and castration cannot be carried out on the same day. Injecting a vaccine on the day of piglet castration often enhances the stress response, induces the onset of the piglet, prevents the epidemic from achieving the desired results, and may also lead to failure of the epidemic prevention.
4, do not castrate on rainy days. The moist environment is conducive to the proliferation of bacteria. In the wet weather, the bacteria can easily invade the pig through the knife edge, causing the disease.
5, sick piglets postponed. Weak piglets and diseased piglets have poor disease resistance and anti-stress, and delaying castration not only helps restore physical fitness quickly, but also avoids epidemic-induced stress or death due to castaway stress.
6, pay attention to strict disinfection. During the first day of castration, thorough disinfection of the pig house can reduce the number of pathogenic microorganisms in the environment and reduce the chance of pathogenic microorganisms coming into contact with the knife edge. When castration, first use 5% iodine to disinfect the skin of the knife to prevent the invasion of the pathogen. After the operation, sprinkle antibacterial drugs on the knife edge to prevent infection.
7. Select the longitudinal cut at the bottom of the scrotum. After sterilizing the skin with iodine, near the bottom of the scrotum, a 1-2 cm incision is made in the longitudinal direction and the testis can be successfully extruded. Here, the incision is small and the position is low, and foreign matter and feces are not easily invaded.
8, pay attention to bleeding and postoperative observation. After the testicles are squeezed, the spermatic cords and blood vessels are twitched with fingers, which has a certain hemostatic effect. After the operation is completed, it should be carefully checked whether there is any inguinal hernia caused by prolapse of the inguinal hernia in order to take timely measures.
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