Title
Evaluation of Long-Acting Eprinomectin Compared to Conventional Anthelmintics in Cow/Calf Production
Date of Graduation
8-2016
Document Type
Dissertation
Degree Name
Doctor of Philosophy in Animal Science (PhD)
Degree Level
Graduate
Department
Animal Science
Advisor
Jeremy G. Powell
Committee Member
Elizabeth B. Kegley
Second Committee Member
Thomas A. Yazwinski
Third Committee Member
Kelly M. Loftin
Keywords
Biological sciences, Long-acting eprinomectin, Moxidectin, Oxfendazole, Performance, Replacement heifers, Spring-calving cows
Abstract
Experiment 1, 83, newly weaned, fall-born crossbred heifer calves were allocated randomly to 1 of 3 anthelmintic treatments: 1) control (CON); 2) combination pour-on moxidectin and oxfendazole (MO); and 3) long-acting eprinomectin (LAE). Two preplanned orthogonal contrast statements were used: 1) to compare CON to treated cattle; and 2) to compare OXF to LAE. Heifer BW and BCS were greater (P≤0.02) from MO and LAE on d 112, 140, 154, 168, 182 compared to CON. Heifer cyclicity, estrous detection, natural service and overall pregnancy rates were greater (P≤0.02) for MO and LAE compared to CON. Cattle fecal egg counts (FEC) were greater (P0.20) between CON and treated cows. Day 14 BCS tended (P=0.07) to be greater for CON compared to treated cows. Also, BCS was greater (P=0.01) and hair coat score was lower (P
Citation
Backes, E. A. (2016). Evaluation of Long-Acting Eprinomectin Compared to Conventional Anthelmintics in Cow/Calf Production. Graduate Theses and Dissertations Retrieved from https://scholarworks.uark.edu/etd/1677