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Small Ruminant Herd Health Flashcards

7 cards from real ICVA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Small Ruminant Herd Health flashcards as text

  1. Which anthelmintic class has the highest rate of resistance reported in Haemonchus contortus populations in the US?

    Answer: Benzimidazoles (thiabendazole class)

    Benzimidazole resistance in Haemonchus contortus is the most widespread and was documented earliest, predating resistance to other anthelmintic classes.

  2. Caprine arthritis-encephalitis (CAE) virus is classified in which virus family, closely related to Maedi-Visna?

    Answer: Retroviridae (Lentivirus)

    CAE virus is a lentivirus (family Retroviridae) that causes progressive arthritis in adult goats and encephalitis in kids, with no known cure.

  3. A herd of Angora goats shows crusting skin lesions, wool/fiber loss, and intense pruritus. Skin scraping reveals oval mites with short legs. Which ectoparasite is most likely?

    Answer: Psoroptes ovis

    Psoroptes ovis causes psoroptic mange with characteristic surface-feeding behavior, serum exudate, crusting, and severe pruritus in sheep and goats.

  4. Which vaccine type is most effective for preventing Clostridium perfringens type D (pulpy kidney disease) in sheep?

    Answer: Toxoid (inactivated toxin) vaccine

    Clostridial toxoid vaccines containing inactivated epsilon toxin provide effective protection against Clostridium perfringens type D and are standard practice in sheep management.

  5. In goats, the primary pathogen responsible for contagious caprine pleuropneumonia (CCPP) is:

    Answer: Mycoplasma capricolum subsp. capripneumoniae

    Mycoplasma capricolum subsp. capripneumoniae (Mccp) is the causative agent of CCPP, a severe respiratory disease notifiable to the OIE/WOAH.

  6. The 'smart drenching' or targeted selective treatment (TST) approach in small ruminants is primarily designed to:

    Answer: Reduce anthelmintic resistance by treating only animals that need it

    TST identifies and treats only animals with clinical signs of parasitism (using FAMACHA, body condition, fecal egg counts) to preserve refugia and slow resistance development.

  7. Scrapie in sheep is caused by which type of infectious agent?

    Answer: Prion (misfolded PrP protein)

    Scrapie is a transmissible spongiform encephalopathy (TSE) caused by an abnormally folded prion protein (PrPSc) that accumulates in neural tissue.