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Parasites and Pasture Management

Efficient, thoughtful pasture management can work wonders for controlling parasites in your livestock. By understanding the connection between parasites and your pasture, you can implement management techniques to make the most of every field while minimizing parasite problems.

Pastures and Parasites

Parasites don’t just live in the guts of animals, they’re also present in any pasture those animals frequent. Different types of worms and bacteria can live in soil and manure, and will thrive in mulch, damp vegetation, and even in the wood of fences or trees that may have been bitten or gnawed by livestock. Parasites are spread through saliva and mucus and on hooves and dirty coats, and can live on bitten plants after animals have grazed. Fleas, ticks, and other biting insects may also pick up and carry certain parasites, able to reinfect other animals. Because parasites can be so prolific, it is impossible to completely eliminate them from any pasture.

All livestock will carry certain parasites, and in fact some parasites are essential for gut health and proper digestion. When animals have too many parasites, however, they will show poor condition and other symptoms, such as tattered coats, weight loss, anemia, diarrhea, and more severe illnesses. Fortunately, proper pasture management can help keep parasites at healthy and controllable levels.

Managing Your Pasture to Control Parasites

The key to controlling parasites in a pasture is to keep the parasite load from becoming too high for animals’ health. There are a number of techniques that can help minimize parasite loads while still allowing livestock access to the pasture.

  • Frequent Rotation – The more often animals are rotated to different pastures, the fewer parasites there will be built up in any one field. Using smaller pastures and moving animals before parasitic larvae have the opportunity to hatch will minimize infections.
  • Avoiding Overgrazing – Parasites thrive close to the soil and can travel 2-3 inches up plants. If animals then graze those plants, they will ingest more parasites and increase their parasite load. Avoiding overgrazing on small or thin plants will minimize that risk.
  • Improve Drainage – Parasites require warm, moist habitats to thrive through their life cycles. Improving field drainage to avoid soggy or muddy areas will minimize the soil that is most suitable for higher numbers of parasites.
  • Change Livestock – Different animals have different tolerances for different types of parasites, and the parasites that are most dangerous to one type of animal may have no effect on another. Change which livestock graze in which pastures to keep parasite loads from growing.
  • Improve Plants – Healthier animals are better able to resist parasitic infections, and more nutritious forage plants will keep livestock healthier. Plants high in tannin, such as chicory and birdsfoot trefoil, are particularly effective at giving livestock a parasite-resisting boost.
  • Manage Manure – Parasites are passed through animals’ feces, and if a pasture is covered with manure, it will have a much higher parasite load. Remove manure from the pasture if possible, or harrow the field and allow broken manure to dry for several weeks to kill parasites before returning animals to the same pasture.

For the most effective parasite control, use as many techniques as possible to manage the pasture and minimize parasites. Monitor livestock closely for signs of parasitic infection and adjust management techniques as the weather and seasons change to keep parasite loads minimal.

Benefits of Pasture Management to Control Parasites

Managing a pasture with an eye toward parasite control not only keeps animals healthier, but it can be cost effective as well when fewer chemical treatments are needed to kill parasites. If animals are not picking up parasites from the pasture, they will not require deworming and other veterinary treatments as frequently, which also helps out a budget and lowers the stress on the animals. No matter what livestock you keep or which pastures you use, parasite-minded pasture management can be a great tool for keeping healthy livestock and a healthy bottom line.