Verified Scientific Sources
Every calculator on AnimalCalculators.com is backed by established textbooks, government consensus standards, and peer-reviewed veterinary literature.
Nutrient Requirements of Dogs and Cats
Authors: National Research Council (NRC) Committee on Animal Nutrition (2006)
National Academies Press, Washington, D.C.
WSAVA Global Nutrition Guidelines & Calorie Calculator Reference
Authors: World Small Animal Veterinary Association (WSAVA) Global Nutrition Committee (2021)
Journal of Small Animal Practice
Official Publication: Pet Food Regulations & Nutrient Profiles
Authors: Association of American Feed Control Officials (AAFCO) (2023)
AAFCO Official Publication
Ross 308 Broiler Performance Objectives & Nutrition Specifications
Authors: Aviagen Technical Services (2022)
Aviagen Broiler Management Guide
Cobb500 Broiler Management Guide & FCR Standards
Authors: Cobb-Vantress Technical Services (2022)
Cobb-Vantress Inc.
Nutrient Requirements of Horses (Sixth Revised Edition)
Authors: National Research Council (NRC) Committee on Nutrient Requirements of Horses (2007)
National Academies Press, Washington, D.C.
Relationship between condition score, physical measurements and body fat percentage in mares
Authors: Henneke, D.R., Potter, G.D., Kreider, J.L., and Yeates, B.F. (1983)
Equine Veterinary Journal, 15(4), 371-372
Nutrient Requirements of Beef Cattle (Eighth Revised Edition)
Authors: National Academies of Sciences, Engineering, and Medicine (NASEM) (2016)
National Academies Press, Washington, D.C.
Estimating the Weight of Beef Cattle from Body Measurements
Authors: Shaeffer, E.A. / Kansas State University Agricultural Experiment Station (1930)
KSU Agricultural Extension Bulletin & USDA Circular
Poultry Development Review: Production Performance Standards & Efficiency Metrics
Authors: Food and Agriculture Organization (FAO) of the United Nations (2018)
FAO Animal Production and Health Guidelines
Nutrient Requirements of Small Ruminants: Sheep, Goats, Cervids, and New World Camelids
Authors: National Research Council (NRC) Committee on Nutrient Requirements of Small Ruminants (2007)
National Academies Press, Washington, D.C.
The Merck Veterinary Manual (11th Edition)
Authors: Aiello, S.E. and Moses, M.A. (Eds.) (2020)
Merck & Co., Inc., Kenilworth, NJ