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Valine nutrient recommendations for Ross x Ross 308 broilers.

A Corzo1, W A Dozier, M T Kidd

  • 1Department of Poultry Science, Mississippi State University, MS 39762, USA. acorzo@poultry.msstate.edu

Poultry Science
|January 24, 2008
PubMed
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This study determined the dietary Valine (Val) requirements for Ross x Ross 308 male broilers across starter, grower, and finisher phases. Findings provide essential Valine minimums for optimal broiler nutrition and growth performance.

Area of Science:

  • Animal Nutrition
  • Poultry Science
  • Amino Acid Metabolism

Background:

  • Limited research exists on the specific dietary Valine needs of modern commercial broilers.
  • Accurate nutrient requirements are crucial for optimizing growth, feed efficiency, and overall health in poultry production.

Purpose of the Study:

  • To delineate the dietary Valine requirements for Ross x Ross 308 male broilers during three distinct growth phases: starter (0-14 days), grower (14-28 days), and finisher (28-42 days).
  • To establish evidence-based Valine minimums for broiler feed formulation.

Main Methods:

  • Three independent studies were conducted using corn- and peanut meal-based diets.
  • Dietary Valine levels were titrated across a dose-response range for each feeding phase.
  • Regression analysis was employed to determine Valine nutrient recommendations.

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Main Results:

  • Estimated total dietary Valine requirements were 1.00% for the starter, 0.95% for the grower, and 0.85% for the finisher phase.
  • These requirements showed a characteristic decline with increasing broiler age.
  • Calculated true digestible Valine needs were 0.91% (starter), 0.86% (grower), and 0.78% (finisher).

Conclusions:

  • The determined Valine requirements provide critical guidance for nutritionists formulating diets for Ross x Ross 308 broilers.
  • Meeting these Valine minimums is essential for supporting efficient growth and performance throughout the broiler's lifecycle.
  • The findings contribute to the body of knowledge on amino acid nutrition in commercial poultry.