Theses and Dissertations
ORCID
https://orcid.org/0009-0001-5702-2652
Advisor
Adhikari, Pratima
Committee Member
Zhang, Li
Committee Member
Roberts, Stacey
Date of Degree
5-10-2024
Original embargo terms
Visible MSU only 1 year
Document Type
Graduate Thesis - Campus Access Only
Major
Agriculture (Poultry Science)
Degree Name
Master of Science (M.S.)
College
College of Agriculture and Life Sciences
Department
Department of Poultry Science
Abstract
A precision biotic (PB) in standard and reduced CP diets, and a protease (PRO) used alone and in combination with PB in the reduced CP diet were evaluated. Effects on performance, digestibility, and blood biomarkers were determined in Dekalb White hens from 24 to 42 weeks of age. Nine diets were fed: 1) a standard diet with a 17.5% formulated CP level (T1); 2) T1 with 500ppm PB (T2); 3) T1 with 700ppm PB (T3); 4) a reduced CP diet with a 15.5% formulated CP level (T4); 5) T4 with 500ppm PB (T5); 6) T4 with 700ppm PB (T6); 7) T4 with 33g/MT PRO (T7); 8) T4 with 33g/MT PRO and 500ppm PB (T8); and 9) T4 with 33g/MT PRO and 700ppm PB (T9). There were no overall differences for feed conversion, but the response of T9 over time suggests longer periods may result in improved feed conversion.
Recommended Citation
Rodewald, ElsiAnna, "Role of a precision biotic and a protease fed alone and in combination to Dekalb White laying hens at peak production phase" (2024). Theses and Dissertations. 6171.
https://scholarsjunction.msstate.edu/td/6171