title: Early-life food restriction of broiler chickens. I. Methods of application, amino acid supplementation and the age at which restrictions should commence.
abstract: 1. Three experiments were performed to examine practical methods of early-life food restrictions and to examine the influence of increased dietary lysine or methionine on bodyweight recovery during re-alimentation in broiler chickens. 2. Food intake of broiler chicks was restricted quantitatively or by dietary dilution at 3 ages and the birds slaughtered at 49 d of age. The success of each food restriction was measured in terms of bodyweight recovery and body fat content. 3. Discontinuous food restriction and restriction by dietary dilution produced similar effects to a previously established food restriction regime. Bodyweight recovery was complete and fat contents depressed. FCR was inconsistently affected. 4. Supplementation of the finisher diet with lysine and/or methionine produced no conclusive results when this diet was fed to broilers previously subjected to early-life food restriction.
authors.affiliation: Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW, Australia.
authors.forename: G P
authors.initials: GP
authors.lastname: Jones
authors.forename: D J
authors.initials: DJ
authors.lastname: Farrell
mesh_terms: D000273:Adipose Tissue / Q000254:growth & development*; D000818:Animals; D002645:Chickens / Q000254:growth & development* / Q000502:physiology; D004435:Eating; D005508:Food Deprivation / Q000502:physiology*; D008239:Lysine / Q000008:administration & dosage; D008715:Methionine / Q000008:administration & dosage; D011897:Random Allocation; D015430:Weight Gain
chemical_list: D008715:Methionine; D008239:Lysine