Assessment of dietary essential amino acid needs in modern broilers
Amino acidsBroiler chickens
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Michael Kidd, University of Arkansas
Co-Principal Investigators:
Project Code:
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:
We will identify optimum amino acid density and BCAA ratios in Ross and Cobb and demonstrate soybean meal is a superior protein source compared to DDGS or crystalline amino acid based diets.
Information And Results
Project Summary

Project Objectives

Project Deliverables

Progress Of Work

Final Project Results

Four experiments at the Division of Agriculture-University of Arkansas Applied Broiler Research Unit were conducted (2 in Cobb 500 male broilers and 2 in Ross 708 male broilers). Results indicated that increasing dietary leucine to lysine ratios from 1.35 to 1.55 does not result in practical antagonisms. Further, corn and soybean meal-based diets resulted in classic broiler responsiveness to increasing amino acid density (i.e., soybean meal), but when corn based distillers grains were added, the amino acid density response was altered and worsened in terms of performance and efficiencies.

Benefit To Soybean Farmers

Amino acid density research in corn and soybean-based diets, but not corn, soybean meal, and corn distillers-based diets, followed conventional wisdom as to increasing amino acid density via soybean meal to improve broiler efficiency. This work points to increased broiler responsiveness when fed corn and soybean meal diets, without high protein distillers grains inclusion, are fed Further, the consistency of soybean meal was measured by broiler treatment responses.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.