Worms in calf

Worms in calf: Signs and deworming medicines

Worms in calf. Worm infestations in calves can lead to decreased growth rates, reduced feed efficiency, and increased susceptibility to other diseases. Learning about deworming medicine and implementing effective deworming protocols can prevent economic losses associated with poor calf performance.

Worms in calf

If you suspect that your calf has worms, it’s essential to take action promptly to prevent any negative effects on its health and growth.

Cattle can be affected by various types of internal parasites, commonly referred to as worms. These parasites can cause significant health issues and economic losses if left untreated.

  1. Gastrointestinal Roundworms (Nematodes):
    • Ostertagia ostertagi (Brown stomach worm)
    • Cooperia spp. (Small intestinal worm)
    • Haemonchus placei (Barber’s pole worm)
    • Trichostrongylus spp.
  2. Lungworms:
    • Dictyocaulus viviparus (Cattle lungworm)
  3. Tapeworms (Cestodes):
    • Moniezia spp. (Tapeworm)
  4. Liver Flukes (Trematodes):
    • Fasciola hepatica (Liver fluke)
  5. Eyeworms:
    • Thelazia spp. (Eyeworm)

Some signs

  1. Poor Growth: Worm infestations can affect the calf’s ability to absorb nutrients from its food, leading to poor growth despite adequate nutrition.
  2. Weight Loss: Severe worm infestations can cause weight loss in calves, even if they are eating well.
  3. Dull Coat: Calves with worms may have a dull, rough coat due to nutrient deficiencies and the body’s response to the parasites.
  4. Diarrhea: Some types of worms can cause diarrhea in calves, leading to dehydration and electrolyte imbalances.
  5. Anemia: Heavy worm burdens can cause anemia in calves due to blood loss from intestinal bleeding caused by certain types of worms.

Calf deworming medicine

When it comes to deworming calves, there are several options available, including both oral and injectable medications.

  1. Fenbendazole: This is a broad-spectrum anthelmintic (dewormer) effective against various internal parasites such as roundworms, lungworms, and some tapeworms.
  2. Ivermectin: Another broad-spectrum dewormer that is effective against a wide range of internal and external parasites including roundworms, lungworms, mites, and lice.
  3. Albendazole: This dewormer is effective against a variety of internal parasites including roundworms, tapeworms, and lungworms.
  4. Levamisole: This is mainly used against gastrointestinal roundworms and lungworms.
  5. Moxidectin: It’s similar to ivermectin and effective against a wide range of internal and external parasites.


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