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Comprehensive Nutritional Requirements for Exercise: CP and Lysine Guidelines

This document outlines the critical protein (CP) and lysine (Lys) requirements for animals engaging in various levels of exercise. It provides a formula to calculate daily CP needs based on body weight, muscle gain, and sweat loss, respectively adjusted for different exercise intensities (light to very heavy). The examples illustrate the calculations using a 500 kg gelding under moderate exercise conditions. Additionally, it highlights essential nutrients lost in sweat and the importance of vitamins and minerals for energy production and tissue protection.

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Comprehensive Nutritional Requirements for Exercise: CP and Lysine Guidelines

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  1. CP/Lys Requirements – Exercise • Change from previous NRC • CP for maintenance • Developing muscle during exercise • N lost in sweat

  2. CP/Lys Requirements – Exercise • CP (g/d) = (BW kg x 1.26) + (BW kg x muscle gain) + ((BW kg x sweat loss x 7.8 g/kg)/0.5/0.79)

  3. CP/Lys Requirements – Exercise • Muscle gain; sweat loss • Light = 0.089 g CP/kg BW; 0.25% • Moderate = 0.177 g CP/kg BW; 0.50% • Heavy = 0.266 g CP/kg BW; 1% • Very heavy = 0.354 g CP/kg BW; 2%

  4. CP/Lys Requirements – Exercise • 500 kg gelding, moderate exercise • CP (g/d) = (BW kg x 1.26) + (BW kg x muscle gain) + ((BW kg x sweat loss x 7.8 g/kg)/0.5/0.79)

  5. CP/Lys Requirements – Exercise • Lys (g/d) = CP (g/d) x 0.043

  6. CP/Lys Requirements – Exercise • CP (g/d) = (500 kg x 1.26) + (500 kg x 0.177 g/kg) + ((500 kg x 0.005 x 7.8 g/kg)/0.5/0.79) = • CP (g/d) = 630 g + 88.5 g + 49.4 g • CP (g/d) = 768 g • Lys (g/d) = 768 g x 0.043 = 33 g

  7. Other Nutrients – Exercise • Lost in sweat – water, salt • Cool temps – 2 to 3 oz/day • Hot temps – 4 to 6 oz/day • Vit A, E, thiamine (B1), folacin • Increased energy production • Vit E, Se • Prevent tissue damage

  8. Vit/Min Supplement – Exercise 3-oz/hd/d

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