Theses and Dissertations
ORCID
0000-0001-7978-3017
Issuing Body
Mississippi State University
Advisor
Wamsley, Kelley G.S.
Committee Member
Wells, Jessica B.
Committee Member
Gehring, Curran
Date of Degree
5-13-2022
Document Type
Graduate Thesis - Open Access
Major
Agriculture
Degree Name
Master of Science (M.S.)
College
College of Agriculture and Life Sciences
Department
College of Agriculture and Life Sciences
Abstract
Previous research evaluated the dLys requirement and the impact of varying dLys and AME on Cobb MV x Cobb 500 broilers during the starter and grower phases, leaving the finisher phase to be determined. Experiment 1 estimated the finisher dLys requirement to range from 0.748-1.32% for males and 0.752-1.292% for females. Male broilers were more responsive to increasing dLys than females, though in general, increasing dLys improved performance and processing. Experiment 2 determined the effects of varying finisher dLys and AME on broiler performance and processing. Increasing dLys improved BWG, FCR, ALI, and breast yield while decreasing FI and fat pad yield. Increasing AME consistently reduced FI and FCR while increasing thigh and fat pad yield. Economic analyses for both experiments demonstrated that maximizing performance was not always economical, verifying the importance of considering feed costs and performance to optimize return on investment for Cobb MV x Cobb 500 broilers.
Recommended Citation
Dennehy, Dalton Gerard, "Evaluation of Cobb MV x Cobb 500 broiler digestible lysine requirement and response to various nutrient regimens during the finisher phase" (2022). Theses and Dissertations. 5530.
https://scholarsjunction.msstate.edu/td/5530