NAVLE Multisystemic

Equine Malnutrition Study Guide

Malnutrition in horses encompasses a spectrum of nutritional disorders ranging from simple energy deficits to complex vitamin and mineral imbalances.

Overview and Clinical Importance

Malnutrition in horses encompasses a spectrum of nutritional disorders ranging from simple energy deficits to complex vitamin and mineral imbalances. Understanding equine malnutrition is essential for the NAVLE because it represents a common clinical presentation with potentially life-threatening complications, particularly during rehabilitation. This topic integrates knowledge of equine physiology, nutrition, metabolism, and emergency medicine.

Malnutrition may result from inadequate feed intake, poor-quality feed, malabsorption syndromes, chronic disease states, dental abnormalities, parasitism, or neglect. The multisystemic nature of malnutrition affects virtually every organ system, making it a high-yield topic for board examinations.

Score Category Description
1 Poor Extremely emaciated; no fatty tissue palpable; spinous processes, ribs, tailhead, hooks and pins projecting prominently
2 Very Thin Emaciated; slight fat covering base of spinous processes; ribs, tailhead, hooks and pins prominent
3 Thin Fat buildup halfway on spinous processes; ribs easily visible; tailhead prominent but vertebrae not visible
4 Moderately Thin Slight ridge along back; faint outline of ribs; tailhead fat palpable; hooks and pins not visible
5 Moderate (Ideal) Back level; ribs not visible but easily felt; fat around tailhead feels spongy
6-9 Fleshy to Obese Progressive fat deposition; ribs difficult to feel; crease developing along back; fat deposits on neck, withers, behind shoulders

Body Condition Scoring: The Henneke System

The Henneke Body Condition Scoring (BCS) system is the standardized method for assessing equine body fat. Developed by Don Henneke at Texas A&M University in 1983, this system uses a 1-9 scale based on visual appraisal and palpation of fat deposits at six anatomical locations: neck, withers, behind the shoulder, ribs, loin, and tailhead.

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