Theses and Dissertations

Issuing Body

Mississippi State University

Advisor

Kidd, T. Michael

Committee Member

McDaniel, D. Christopher

Committee Member

Mixon, Melissa

Committee Member

Corzo, Alejandro

Committee Member

Dozier, III, A. William

Date of Degree

5-2-2009

Document Type

Graduate Thesis - Open Access

Major

Poultry Science

Degree Name

Master of Science

College

College of Agriculture and Life Sciences

Department

Department of Poultry Science

Abstract

The purpose of this study was to evaluate the Lys and Thr responses of TP-16 male broilers. Experiment 1 (14-28 d of age) showed no significant live performance effects. In Experiment 2, Lys and Thr (P=0.021) interacted to affect 28 to 42 d body weight gain and (P=0.004) feed intake. Lys main effects improved body weight gain (P=0.002), and feed conversion (P=0.009). Thr fed at the 0.68% level improved body weight gain and feed conversion. Mortality did not differ among treatments and averaged 0.09% across all treatments. The study indicated the sensitivity of the Thr:Lys ratio when broilers are fed diets containing marginal Lys. Although Thr X Lys interactions occurred in this study, the Lys levels in the test diets may have been too high for determining a ratio to an amino acid in a factorial study. Interaction results indicate that the Thr:Lys ratio in broilers from 28 to 42 days of age is between 0.57 to 0.68.

URI

https://hdl.handle.net/11668/15009

Comments

Lysine||Threonine||Broilers

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