The effects of in ovo feeding arginine, β-hydroxy-β-methyl- butyrate, and protein on jejunal digestive and absorptive activity in embryonic and neonatal turkey poults

O. T. Foye*, P. R. Ferket, Z. Uni

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

In ovo feeding, injecting nutrients into the amnion of the avian embryo, may enhance jejunal nutrient uptake, activity of the intestinal enzymes, and posthatch growth. This hypothesis was tested in the following in ovo feeding (IOF) experiments. In experiment 1, 400 eggs were evenly distributed among 4 nutritional treatments at 23 d of embryonic development (23E) and administered 1 of 4 treatments as a 2 x 2 factorial arrangement of arginine (ARG 0, 0.7%) and β-hydroxy-β-methyl-butyrate (HMB 0, 0.1%). Tissues were assayed for maltase, sucrase, and leucine aminopeptidase (LAP) at 25E, hatch, and 3, 7, and 14 d. In experiment 2, all IOF procedures were repeated and treatments were administered at 21E: injected or noninjected control, 21% egg white protein (EWP), 21% EWP + 0.1% HMB. In experiment 3, two hundred eggs were evenly distributed among the following treatments at 23E: noninjected control or 0.7% ARG + 0.1% HMB + 21% EWP. Jejunal samples were assayed for glucose or alanine uptake at 23E, 25E, and hatch (experiment 2), and hatch and 7 d (experiment 3), respectively. All poults were fed a turkey starter diet ad libitum immediately upon hatching. There was a highly significant HMB x ARG interaction on jejunal sucrase, maltase, and LAP activities at 25E and 14 d. Poults in ovo (IO) fed HMB + ARG had approximately a 2- to 3-fold increase in jejunal sucrase, maltase, and LAP activities at 25E, and a 3-fold increase at 14 d, over other treatments. Poults IO fed EWP + HMB (experiment 2) had enhanced glucose uptake at 25E, whereas poults IO fed ARG + HMB + EWP (experiment 3) had enhanced alanine uptake at hatch and 7 d. These studies demonstrate that IOF ARG, HMB, and EWP may enhance jejunal nutrient uptake and digestion in turkeys.

Original languageAmerican English
Pages (from-to)2343-2349
Number of pages7
JournalPoultry Science
Volume86
Issue number11
DOIs
StatePublished - 1 Nov 2007

Bibliographical note

Funding Information:
This work was supported by Prestage Farms Inc. (Clinton, NC); Institute of Nutrition, University of North Carolina—Chapel Hill; North Carolina Agricultural Foundation, Raleigh; Binational Agricultural Research and Development (BARD) Foundation, and the US Poultry and Egg Foundation. Additionally, the authors would like to thank Annette Israel, Carole Morris, Elad Tako, Dan Moore, Renee Plunske, Anael Santos, Fernanda Santos, and Lizza Macalintal within the Department of Poultry Science, North Carolina State University, Raleigh, for their technical assistance.

Keywords

  • Absorption
  • Digestion
  • In ovo feeding
  • Jejunal
  • Turkey

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