Impacts of Flunixin Meglumine injection on pain responses of either rubber ring castrated and tail docked lambs or surgically castrated and docked lambs

作者：Paige P Anderson, Amanda M Long, Alison R Crane, T. W. Hoffman, Gerald L. Stokka, Lauren L Hulsman Hanna, James D Kirsch, Chris S Schauer · 发表于：Translational Animal Science · 年份：2020 · DOI：10.1093/tas/txaa096 · 被引用次数：3 · 研究领域：Veterinary Pharmacology and Anesthesia、Orthopedic Surgery and Rehabilitation、Intramuscular injections and effects

Pain is defined as an aversive sensory or emotional event that causes an animal to experience stress (Molony and Kent, 1997). Stress is a biochemical response that can occur from a physical or psychological response on the individual (Eberhard and Veisser, 2007). There are multiple methods of castration and docking that livestock producers utilize, and each one can cause different levels and types of stress. The rubber ring (RR) method is commonly used in the sheep industry for castration and docking, whereas the cattle industry performs either surgical or the RR method for castration (Daly, 2015). Warnock et al. (2012) and Molony and Kent (1997) compared different methods of either castration or docking in cattle and sheep. Warnock et al. (2012) reported that castration method had no effect on performance traits, whereas Molony and Kent (1997) reported castration method may affect behavioral responses in sheep. Thornton and Waterman-Pearson (1999) observed that analgesics may decrease behavioral stress and cortisol concentrations in lambs. One potential analgesic to use during castration and docking is Flunixin Meglumine (FM). Flunixin Meglumine is a non-narcotic, nonsteroidal analgesic agent with anti-inflammatory and antipyretic activity (Banamine Intervet/Merck Animal Health, Madison, NJ). However, we are not aware of research that evaluates the comparison of castration and docking methods in lambs, with or without the use of analgesics. Therefore, our hypothesis was that...