Bioavailability of lysine from a liquid lysine source in chicks

Jason L. Emmert, Michele W. Douglas, Stephanie D. Boling, Carl M. Parsons, David H. Baker

Research output: Contribution to journalArticlepeer-review

Abstract

Two experiments were conducted to assess the bioavailability of lysine from a liquid lysine product (LLP; 60% lysine) relative to crystalline L-lysine·HCl. In the first experiment, four groups of five chicks were fed a lysine-deficient basal diet containing corn, soybean meal, and feather meal or the basal diet supplemented with 0.1 or 0.2% lysine from L-lysine·HCl or LLP from Day 8 to 22 posthatching. Weight gain and feed efficiency responded linearly (P < 0.01) to increasing levels of lysine from either lysine source, and multiple linear regression analysis of weight gain regressed on supplemental lysine intake indicated no difference (P > 0.05) in the response to lysine from L-lysine·HCl or LLP. Experiment 2 was conducted using a lysine-deficient basal diet containing corn, peanut meal, and feather meal, and all diets were fed to five groups of five chicks from Day 8 to 21 posthatching. Treatment additions again consisted of 0.1 or 0.2% lysine from L-lysine·HCl or LLP. Weight gain and feed efficiency responded linearly (P < 0.01) to increasing levels of lysine from L-lysine·HCl and LLP, and multiple linear regression analysis of weight gain regressed on supplemental lysine intake indicated no difference (P > 0.05) in the response to lysine from L-lysine·HCl or LLP. These data indicate that lysine from LLP is fully bioavailable relative to lysine from crystalline L-lysine·HCl, and could therefore be used as a source of lysine in practical poultry diets.

Original languageEnglish (US)
Pages (from-to)383-386
Number of pages4
JournalPoultry science
Volume78
Issue number3
DOIs
StatePublished - Mar 1999

Keywords

  • Bioavailability
  • Broiler chick
  • Growth performance
  • Liquid lysine
  • Lysine

ASJC Scopus subject areas

  • Animal Science and Zoology

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