A field trial evaluation of the effectiveness and benefit of cydectin long-acting injectable and ivomec injectable as used one time in grazing stocker cattle
Yazwinski, T.A.; Tucker, C.A.; Johnson, Z.; Powell, J.
Veterinary Therapeutics Research in Applied Veterinary Medicine 7(1): 43-51
2006
ISSN/ISBN: 1528-3593 PMID: 16598683 Document Number: 601735
Use of moxidectin long-acting injectable and ivermectin injectable in female Bos taurus beef-type calves was evaluated in terms of efficacy (fecal egg counts) and performance parameters (weight gain). In this 150-day study, moxidectin-treated calves gained 20% more weight than did ivermectin-treated and control calves. Mean fecal egg count reductions ranged from 76.7 to 99.0 for moxidectin and -0.8 to 83.4 for ivermectin. Moxidectin long-acting injection provided efficacious (immediate as well as long-term) egg count suppressions as well as enhanced animal productivity (weight gains). The study also showed that Cooperia spp appear poised to present the most immediate challenges once long-acting macrocyclic lactone treatments become available.