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Title: Net energy prediction and energy efficiency of feed for broiler chickens
Contributor(s): Wu, Shu-Biao  (author)orcid ; Swick, Robert A  (author)orcid ; Noblet, Jean (author); Rodgers, Nicholas  (author); Cadogan, David (author); Choct, Mingan  (author)
Publication Date: 2019-03-01
Open Access: Yes
DOI: 10.3382/ps/pey442
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Abstract: Global consumption of chicken meat has increased at a faster rate than any other animal protein source, and thus refinements in energy formulation techniques for feed have continued to gain importance. Formulation of animal feed based on net energy (NE) has been implemented in ruminants and pigs but not in poultry. A closed-circuit respiratory calorimetry system was employed on 25- to 28-day-old broilers fed 19 diets formulated with varying nutrient composition to produce equations to predict NE and apparent metabolizable energy (AME) efficiency of feed for broiler chickens. Performance, energy and N balance, respiratory quotient, and energy utilization were measured in the birds. Linear regression analysis was performed to generate prediction equations for dietary energy content and AME efficiency. The NE content was positively related to AME and ether extract, but negatively to crude protein. The study generated equations that can accurately predict NE, and NE/AME using AME value and chemical composition of feeds. The NE prediction equations were further validated on a separate set of diets with high correlation (r = 0.99) and accuracy. The outcomes are an important step for the broiler industry to adapt to an NE system in place of AME systems for the formulation of broiler chicken feeds following robust validation experiments.
Publication Type: Journal Article
Source of Publication: Poultry Science, 98(3), p. 1222-1234
Publisher: Elsevier BV
Place of Publication: The Netherlands
ISSN: 1525-3171
Field of Research (FOR): 070204 Animal Nutrition
Socio-Economic Objective (SEO): 830309 Poultry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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