Weight gains in sucking beef calves treated with macrocylic lactone anthelmintics in either an extended-release injectable formulation or a pour-on formulation

Authors

  • W. D. Whittier Production Management Medicine, VA-MD Reg. College Vet. Med., VA Tech, Blacksburg, VA 24061
  • J. F. Currin Production Management Medicine, VA-MD Reg. College Vet. Med., VA Tech, Blacksburg, VA 24061
  • S. Holland Production Management Medicine, VA-MD Reg. College Vet. Med., VA Tech, Blacksburg, VA 24061
  • A. M. Zajac Production Management Medicine, VA-MD Reg. College Vet. Med., VA Tech, Blacksburg, VA 24061
  • R. Kasimanickam Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164

DOI:

https://doi.org/10.21423/aabppro20153571

Keywords:

beef cattle, calves, parasite, ERE, parasiticide

Abstract

The objective of this trial was to test the hypothesis that treating suckling beef calves grazing summer pastures with an extended-release injectable parasiticide containing eprinomectin (ERE) would result in additional weight gain when compared to ivermectin in a pour-on (POI) formulation. Extended-release eprinomectin contains the anthelmintic with a poly-lactide-co-glycolic-acid polymer allowing slow release of eprinomectin following injection with a label claim for protection against reinfection with Cooperia oncophora and Cooperia punctata for 100 d and Ostertagia ostertagi for 120 d. Pour-on ivermectin claims 21 d control for C. punctata with 14 for O. ostertagi and C. oncophora.

Cover image of the 48th Conference Proceedings: An image of Dr. Fred Gingrich II dressed in a red shirt and overalls and standing in front of dairy cows in a barn interior. Yellow background.

Downloads

Published

2015-09-17

Issue

2015

Section

Research Summaries 1

Most read articles by the same author(s)

1 2 > >>