Feed intake of grazing calves exposed to trichostrongyle infection and treated with the morantel sustained release bolus.

Abstract

Herbage intake was measured in two groups of 20 first-year grazing cattle. The animals in one group each received a morantel sustained release bolus at turnout to control nematode parasitism and the animals in the other group remained untreated. The latter group showed a mean peak faecal egg count of 655 eggs per gram (e.p.g.) in October associated with high serum pepsinogen concentration and clinical signs of ostertagiasis, compared with a peak of 119 e.p.g. in the treated group which remained in good health. In September the daily voluntary feed intake of the untreated animals was significantly depressed (94 g kg-1 body weight vs. 77 g kg-1 P less than 0.001), but no difference in digestive efficiency was recorded between the two groups. This difference in feed intake was associated with a 47 kg mean live weight advantage of the treated animals at housing.

• Authors: S L Bell, R J Thomas, M T Ferber
• Journal: Veterinary parasitology (Vet Parasitol) Vol. 28 Issue 1-2 Pg. 125-35 (Apr 1988) ISSN: 0304-4017 [Print] Netherlands
• PMID: 3388730 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Delayed-Action Preparations
• Pyrimidines
• Morantel

Topics

• Animals
• Body Weight
• Cattle
• Cattle Diseases (physiopathology, prevention & control)
• Delayed-Action Preparations
• Digestion
• Eating
• Intestinal Diseases, Parasitic (physiopathology, prevention & control, veterinary)
• Male
• Morantel (administration & dosage, therapeutic use)
• Ostertagia (growth & development)
• Ostertagiasis (physiopathology, prevention & control, veterinary)
• Pyrimidines (therapeutic use)
• Seasons
• Trichostrongyloidea (growth & development)
• Trichostrongyloidiasis (physiopathology, prevention & control, veterinary)
• Trichostrongylus (growth & development)