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http://dx.doi.org/10.5187/jast.2020.62.5.628

Evaluation of crude protein levels in White Pekin duck diet for 21 days after hatching  

Cho, Hyun Min (Department of Animal Science and Biotechnology, Chungnam National University)
Wickramasuriya, Samiru Sudharaka (Department of Animal Science, Uva Wellassa University)
Macelline, Shemil Priyan (School of Life and Environmental Science, Faculty of Science, The University of Sydney)
Hong, Jun Seon (Department of Animal Science and Biotechnology, Chungnam National University)
Lee, Bowon (Department of Animal Science and Biotechnology, Chungnam National University)
Heo, Jung Min (Department of Animal Science and Biotechnology, Chungnam National University)
Publication Information
Journal of Animal Science and Technology / v.62, no.5, 2020 , pp. 628-637 More about this Journal
Abstract
In poultry diets, a requirement of crude protein is one of the most important factors in poultry productivity. Besides, the Pekin duck requirement of crude protein is still not clear. This experiment was conducted to determine the crude protein requirement of Pekin duck on diet formulation by investigation of growth performance, carcass trait, and analysis of blood parameter for a hatch to 21-day (d) of age. A total of 432 male White Pekin ducks were randomly allocated to six levels of crude protein (i.e., 15%, 17%, 19%, 21%, 23%, and 25%) to give six replicate pens per treatment with 12 ducklings per each pen. Body weight and feed intake were measured weekly by calculating feed conversion ratio and protein intake. Two ducklings each pen was euthanized via cervical dislocation for analysis of carcass trait and plasma blood on 21-d of age. Data were applied on both prediction linear-plateau and quadratic-plateau models by estimation of the crude protein requirements. Data were applied on both prediction linear-plateau and quadratic-plateau models by estimation of the crude protein requirements. The level of crude protein requirements of Pekin ducks for 21 days after the hatch was estimated to be 20.63% and 23.25% diet for maximum daily gain, and minimum feed conversion ratio, respectively.
Keywords
Growth performance; Linear-plateau model; Pekin duck; Quadratic-plateau model;
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