An Ileal Amino Acid Digestibility Assay for the Growing Meat Chicken-Effect of Feeding Method and Digesta Collection Procedures

K. H. Yap, I. T. Kadim, R. D. King, P. J. Moughan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The objective was to evaluate method of feeding (free access or intubation), method of slaughter (carbon dioxide gas or barbiturate) and digesta flushing medium (distilled water or physiological saline), in the development of an ileal amino acid digestibility assay for 4 week-old broiler chickens. Three diets were used (commercial (C), semi-synthetic meat-and-bone meal (MBM) or wheat (W)). For the coarser C and W diets but not for the MBM diet, feeding method had a significant effect on concentrations of chromium (Cr), nitrogen (N), acid detergent fibre (ADF) and neutral detergent fibre (NDF) in the crop contents at a set time after a meal. There appeared to be a selection of food particles under free-access feeding. For birds receiving the wheat diet there was an effect (p <0.05) of sampling time after feeding on the concentrations of Cr, N, ADF and NDF/Cr in the crop contents. Flushing ileal digesta with distilled water or saline led to similar apparent ileal N digestibility coefficients. Birds given the MBM diet, and killed by inhalation of CO2, had significantly (p <0.05) lower apparent ileal N digestibility coefficients (73 versus 80%) than those killed by barbiturate overdose.

Original languageEnglish
Pages (from-to)671-678
Number of pages8
JournalAsian-Australasian Journal of Animal Sciences
Volume10
Issue number6
Publication statusPublished - Dec 1997

Fingerprint

Feeding Methods
feeding methods
chicken meat
digesta
Meat
Chickens
Detergents
digestibility
meat and bone meal
Diet
Amino Acids
Chromium
amino acids
chromium
barbiturates
assays
diet
acid detergent fiber
neutral detergent fiber
Triticum

Keywords

  • Chicken
  • Digestibility
  • Ileal
  • Intubation
  • Nitrogen

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

An Ileal Amino Acid Digestibility Assay for the Growing Meat Chicken-Effect of Feeding Method and Digesta Collection Procedures. / Yap, K. H.; Kadim, I. T.; King, R. D.; Moughan, P. J.

In: Asian-Australasian Journal of Animal Sciences, Vol. 10, No. 6, 12.1997, p. 671-678.

Research output: Contribution to journalArticle

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