Efficacy of a morantel sustained-release bolus for the control of gastrointestinal nematodes in Florida dairy heifers.

Abstract

The effectiveness of a morantel sustained-release bolus (MSRB) in controlling gastrointestinal nematode infections was determined in 70 Holstein heifer calves with no prior grazing experience. Calves were allotted to 2 treatment groups and were maintained in Florida during the grazing season on divided pastures of equal area. One MSRB was administered to each calf in 1 group at the time of turnout onto spring pasture, whereas calves in the other group remained as nonmedicated controls. By the end of the grazing season, treatment resulted in significantly (P less than 0.05) lower worm burdens and significantly improved weight gains. The MSRB-treated calves were able to reach breeding weight 2 to 4 weeks earlier than did nonmedicated calves.

• Authors: R E Bradley, D H Bliss, T J Newby
• Journal: American journal of veterinary research (Am J Vet Res) Vol. 47 Issue 11 Pg. 2385-8 (Nov 1986) ISSN: 0002-9645 [Print] United States
• PMID: 3789499 (Publication Type: Journal Article)

Chemical References

• Delayed-Action Preparations
• Pyrimidines
• Morantel

Topics

• Animals
• Cattle
• Cattle Diseases (drug therapy)
• Delayed-Action Preparations
• Female
• Florida
• Intestinal Diseases, Parasitic (drug therapy, veterinary)
• Morantel (administration & dosage, therapeutic use)
• Nematode Infections (drug therapy, veterinary)
• Pyrimidines (therapeutic use)