How to Control External Parasites of Pigs

External parasites that attack pigs and other livestock are a common problem for farmers. Not only do they cause skin irritation, wounds and extreme discomfort in animals, but they also cause diseases that can lower farm production. Although preventive treatments decrease the likelihood of parasitic infections, parasites can become resistant to insecticides over time. Farmers are unlikely to eradicate animal parasites entirely, but they can take certain steps to control infestations and prevent parasites from spreading.

Things You'll Need

  • Insecticide solution for treating swine parasites
  • Injectable anti-parasite medication
  • Spray applicator with mixing tank
  • Large bucket
  • Black plastic sheeting
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Instructions

    • 1

      Treat new hogs for lice and mites before adding them to your herd. Amitraz and fenvalerate are liquid insecticides that eliminate and prevent lice and mites. Drench adult pigs with a spray solution in a well-ventilated area, and spray or dip piglets in a large bucket containing the insecticide solution. Typically, the solution should comprise a quart of insecticide in 50 gallons of water. Always check the product label for precise directions and safety warnings.

    • 2

      Inject your pigs with an anti-parasitic medication to prevent lice and mites. Ivermectin is a liquid solution that you can inject in the animal's neck, or behind its ear. It eliminates current infestations, kills eggs and prevents reinfestation. Restrain each pig before administering ivermectin, and use sterile equipment for each animal. Hire a veterinarian or an experienced farmer to administer the injections if you lack experience. Wait one full week after injecting a pig before exposing it to your other animals.

    • 3

      Treat and remove accumulated manure. Parasites thrive and multiply rapidly in manure piles; if left untreated, these parasites will eventually affect your pigs and other animals. Cover exposed manure with black plastic sheeting until you can haul it away. To prevent parasites from maturing, spray exposed manure with a larvicide like cyromazine before covering it.