Attempted chemoprophylaxis of cryptosporidiosis in chickens, using diclazuril, toltrazuril, or garlic extract

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Three battery tests were conducted to study the anticryptosporidial efficacy of the 2 commercially available anticoccidial triazinone derivates, diclazuril and toltrazuril, and a garlic extract. At the recommended level, diclazuril reduced the oocyst output of birds by 14.6%. The efficacy of toltrazuril was 52.1% at the recommended level, which could be moderately increased using 5 or 10 times the recommended dose. However, these doses resulted in significant weight gain reduction. The efficacy of garlic extract was 24.4%. It is concluded that none of the drugs can be recommended for chemoprophylaxis or therapy of cryptosporidiosis in chickens.

Original languageEnglish
Pages (from-to)989-991
Number of pages3
JournalJournal of Parasitology
Issue number5
Publication statusPublished - Oct 1 1999


ASJC Scopus subject areas

  • Parasitology
  • Ecology, Evolution, Behavior and Systematics

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