Effect of age on the relationship between metabolizable energy and digestible energy for broiler chickens.

Age Factors Animal Feed / analysis Animal Nutritional Physiological Phenomena Animals Chickens / metabolism Diet / veterinary Digestion / drug effects Endo-1,4-beta Xylanases / administration & dosage Energy Metabolism / physiology Male Organ Size Triticum Zea mays
age broiler diet digestible energy metabolizable energy

Journal

Poultry science
ISSN: 1525-3171
Titre abrégé: Poult Sci
Pays: England
ID NLM: 0401150

Informations de publication

Date de publication:
Jan 2020
Historique:
received: 03 04 2019
accepted: 08 08 2019
entrez: 18 5 2020
pubmed: 18 5 2020
medline: 15 12 2020
Statut: ppublish

Résumé

A total of 960 male Ross 308 chicks (day-old) were used to investigate the effect of age on the relationship between metabolizable energy (ME) and digestible energy (DE) for broiler chickens. Bird growth variables, nitrogen retention (NR), nitrogen digestibility (ND), as well as the relative weight of liver, pancreas, and the gastrointestinal tract were determined. Practical diets that compared 2 cereals (corn and wheat) and exogenous xylanase (0 or 16,000 BXU/kg) were evaluated at 5 ages (7, 14, 21, 28, and 35 D) in a 2 × 2 × 5 factorial arrangement of treatments with 8 replicates per treatment and started with 30 birds per replicate. A randomized block ANOVA analysis of repeated measures was performed, and a 2 × 2 × 5 factorial structure was used to investigate the 2 dietary treatment factors (cereal type and the presence of xylanase) within the 5 bird ages (7, 14, 21, 28, and 35 D), and their interactions. Apparent metabolizable energy (AME) increased linearly from 7 until 28 D of age, but (P < 0.05) decreased at 35 D of age. Digestible energy was high at 7 D of age, then dropped and remained similar (P > 0.05) from 14 to 35 D of age. The AME: DE ratio was lowest (P < 0.05) at 7 D of age but there were no (P > 0.05) differences thereafter. Cereal type and xylanase supplementation did not (P > 0.05) change the ME: DE ratio. The results indicate that determining ME before 14 D of age may give absolute values that are lower than would be obtained with older birds. ME values that are determined on older broiler chickens may overestimate the energy availability of practical feeds used in broiler starter feeds.

Identifiants

DOI: 10.3382/ps/pez495 PMID: 32416817 PMC: PMC7587868
pubmed: 32416817
pii: S0032-5791(19)57877-4
doi: 10.3382/ps/pez495
pmc: PMC7587868
pii:
doi:

Substances chimiques

Endo-1,4-beta Xylanases EC 3.2.1.8

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

320-330

Informations de copyright

Copyright © 2019 The Author(s). Published by Elsevier Inc. All rights reserved.

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Auteurs

Z Yang (Z)

Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China; The National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.

V R Pirgozliev (VR)

The National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.

S P Rose (SP)

The National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK. Electronic address: sprose@harper-adams.ac.uk.

S Woods (S)

The National Institute of Poultry Husbandry, Harper Adams University, Edgmond, Newport, Shropshire, TF10 8NB, UK.

H M Yang (HM)

College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China.

Z Y Wang (ZY)

College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu Province 225009, P. R. China.

M R Bedford (MR)

AB Vista, Woodstock Court, Blenbeim Road, Marlborougb Business Park, Marlborough, Wiltshire SN8 4AN, UK.

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Classifications MeSH

questionsmedicales.fr › Environnement et santé publique › Santé publique › Facteurs épidémiologiques › Facteurs âges › Effect of age on the relationship between...
questionsmedicales.fr › Aliments et boissons › Aliments › Produits agricoles › Aliment pour animaux › Effect of age on the relationship between...
questionsmedicales.fr › Phénomènes physiologiques › Alimentation et nutrition › Phénomènes physiologiques nutritionnels › Phénomènes physiologiques nutritionnels chez l'animal › Effect of age on the relationship between...
questionsmedicales.fr › Eucaryotes › Animaux › Effect of age on the relationship between...
questionsmedicales.fr › Eucaryotes › Animaux › Chordés › Vertébrés › Oiseaux › Poulets › Effect of age on the relationship between...
questionsmedicales.fr › Phénomènes physiologiques › Alimentation et nutrition › Phénomènes physiologiques nutritionnels › Régime alimentaire › Effect of age on the relationship between...
questionsmedicales.fr › Phénomènes physiologiques de l'appareil buccodentaire et de l'appareil digestif › Phénomènes physiologiques de l'appareil digestif › Digestion › Effect of age on the relationship between...
questionsmedicales.fr › Enzymes et coenzymes › Enzymes › Hydrolases › Glycosidases › Xylosidases › Endo-1,4-beta xylanases › Effect of age on the relationship between...
questionsmedicales.fr › Métabolisme › Métabolisme énergétique › Effect of age on the relationship between...
questionsmedicales.fr › Phénomènes physiologiques › Croissance et développement › Croissance › Taille d'organe › Effect of age on the relationship between...
questionsmedicales.fr › Eucaryotes › Viridiplantae › Streptophyta › Embryophyta › Tracheobionta › Magnoliopsida › Poaceae › Triticum › Effect of age on the relationship between...
questionsmedicales.fr › Eucaryotes › Viridiplantae › Streptophyta › Embryophyta › Tracheobionta › Magnoliopsida › Poaceae › Zea mays › Effect of age on the relationship between...