Estimating requirements for apparent faecal and standardised ileal digestible amino acids in laying hens by a metaanalysis approach

M.M. van Krimpen, T. Veldkamp, J.W. van Riel, V. Khaksar, H. Hashemipour, M.C. Blok, W. Spek

Research output: Book/ReportReportProfessional

Abstract

The aim of the present study is to update the requirements for the essential amino acids of laying hens, both on a AFD and SID basis, by performing a meta-analysis on dose-response studies used to derive requirement values for essential amino acids (lysine, methionine+cysteine, threonine and tryptophan) in laying hens as presented in the literature. In this meta-analysis, the data are fitted by use of the Wood equation (see paragraph 2.4). The amino acid intake levels for realizing maximal rate of lay, egg mass and feed efficiency are provided. The amino acid requirements for use in practice are based on the amino acid intake levels at which 95% of these maximum responses were reached.
Original languageEnglish
Place of PublicationWageningen
PublisherWageningen UR Livestock Research
Number of pages71
Publication statusPublished - 2015

Publication series

NameLivestock research report
PublisherWageningen UR Livestock Research
No.848
ISSN (Print)1570-8616

Keywords

  • hens
  • amino acids
  • feeds
  • meta-analysis
  • digestibility
  • protein digestibility
  • small intestine
  • nutrient content
  • nutrient requirements
  • feed requirements
  • poultry
  • poultry feeding

Fingerprint Dive into the research topics of 'Estimating requirements for apparent faecal and standardised ileal digestible amino acids in laying hens by a metaanalysis approach'. Together they form a unique fingerprint.

  • Cite this

    van Krimpen, M. M., Veldkamp, T., van Riel, J. W., Khaksar, V., Hashemipour, H., Blok, M. C., & Spek, W. (2015). Estimating requirements for apparent faecal and standardised ileal digestible amino acids in laying hens by a metaanalysis approach. (Livestock research report; No. 848). Wageningen UR Livestock Research. https://edepot.wur.nl/343379