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Comparative anthelmintic activity of strategic sustained low-level administration of albendazole in feed pellets compared to single doses of closantel and tetramisole against natural ovine parasitic gastroenteritis.

Abstract
The strategic use of single therapeutic doses of closantel, tetramisole or sustained low-level administration of albendazole in feed pellets in controlling naturally acquired parasitic gastroenteritis in sheep was investigated on a farm in semi-arid Rajasthan, India. A total of 303 5- to 6-month-old sheep were divided into three groups. Two groups were dosed with single therapeutic doses of closantel and tetramisole and the third group was given a low-level medication with albendazole through feed pellets for 30 days. Faecal egg counts revealed significantly lower counts (p<0.001) in the group treated with closantel compared to the other two groups. The faecal egg counts in the group receiving sustained low-level albendazole rose after withdrawal of the medication but remained significantly lower than those in the group treated with tetramisole up to 7 weeks after treatment (p<0.05). On the other hand, in the group treated with tetramisole, the mean faecal egg count rose from 3 weeks after treatment and remained continuously higher than those in any other group up to 12 weeks after treatment. The closantel-treated group gained more body weight but the first six-monthly greasy fleece yield was greater in the group treated with medicated pellets. During the first 3 months of the experiment, three animals in the group treated with tetramisole died of parasitic gastroenteritis. Following sustained low-level administration of albendazole in feed pellets, the plasma disposition curve of both the sulphoxide and sulphone metabolites reached its plateau level by day 5 and remained almost constant thereafter. The comparative cost-effectiveness of the three treatment regimes during the first 3 months of treatment was best for the group treated with closantel followed by the group treated with medicated feed pellets.
AuthorsF A Khan, P K Sanyal, C P Swarnkar, D Singh, P S Bhagwan
JournalTropical animal health and production (Trop Anim Health Prod) Vol. 31 Issue 4 Pg. 193-204 (Aug 1999) ISSN: 0049-4747 [Print] United States
PMID10504099 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Anthelmintics
  • Salicylanilides
  • Tetramisole
  • closantel
  • Albendazole
Topics
  • Administration, Oral
  • Albendazole (administration & dosage, pharmacokinetics, therapeutic use)
  • Animal Feed
  • Animals
  • Anthelmintics (administration & dosage, pharmacokinetics, therapeutic use)
  • Area Under Curve
  • Chromatography, High Pressure Liquid (veterinary)
  • Cost-Benefit Analysis
  • Feces (parasitology)
  • Gastroenteritis (parasitology, prevention & control, veterinary)
  • India
  • Nematode Infections (parasitology, prevention & control, veterinary)
  • Parasite Egg Count (veterinary)
  • Random Allocation
  • Salicylanilides (administration & dosage, therapeutic use)
  • Seasons
  • Sheep
  • Sheep Diseases (parasitology, prevention & control)
  • Tetramisole (administration & dosage, therapeutic use)

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