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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.20.0050    [Accepted] Published online March 12, 2020.
Amino acid requirements in horses – A review
Chan Hee Mok1,2  , Kristine Laura Urschel1,* 
1Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA
2Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington, KY 40546, USA
Correspondence:  Kristine Laura Urschel, Tel: +1-859-257-7748, Fax: +1-8593231027, Email: klurschel@uky.edu
Received: 30 January 2020   • Revised: 25 February 2020   • Accepted: 12 March 2020
Abstract
Evaluating amino acid requirements, specifically threonine requirements, in horses will enable better feed formulation and result in economic production, improved animal health, and reduced environmental pollution. However, the current knowledge of protein and amino acid requirements in horses is still limited. Because horses have a unique digestive system and consume a variety of feed ingredients, their protein digestibility may be affected than other species by different feed composition, and thus amino acid requirements are susceptible to vary between situations. Therefore, a careful evaluation of amino acid requirements with a proper method is needed for various conditions. This review will also provide comprehensive information that needs to be considered when designing an amino acid requirement study in horses.
Keywords: Equine; Protein Digestibility; Requirement Evaluation, Threonine, Amino Acid Nutrition
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