Effects of Corn Processing and Dietary Fiber Source on Feedlot Performance, Visceral Organ Weight, Diet Digestibility, and Nitrogen Metabolism in Lambs

S. Hejazi, F. L. Fluharty, J. E. Perley, S. C. Loerch, G. D. Lowe

Research output: Contribution to journalArticle

Abstract

In Exp. 1, early-weaned Targhee and Polypay crossbred lambs (60 ewes and 66 rams; initial BW 24 ± 1.0 kg) were used in a 2 × 3 factorial experiment to determine the effects of corn processing (whole shelled corn [WSC] or ground and pelleted corn [GC]) in combination with supplemental fiber (none [control]; soybean hulls, SBH [highly digestible]; or peanut hulls, PH [highly indigestible]) on DMI, ADG, feed efficiency, and visceral organ weight. For the total trial, WSC resulted in a 4% increase (P < .01) in ADG vs GC, and supplemental fiber resulted in increased (P < .01) DMI and ADG vs the control diet. Experiment 2 was conducted using 12 Targhee and Polypay crossbred wether lambs (initial BW 25 ± 7 kg) to determine the effects of corn processing and fiber source in high-concentrate diets on diet digestibility and N retention using the same diets as in Exp. 1. Lambs fed WSC had greater (P < .001) apparent N digestion, true N digestion, and N retention (P < .01) than those fed GC. The apparent digestibilities of DM, OM, and NDF were greater (P < .001) for WSC than for GC diets. Peanut hulls resulted in decreased (P < .01) DM, OM, and NDF apparent digestibilities compared with the control and SBH diets. Starch digestion was not affected (P > .10) by diet. Whole corn resulted in improved DM, OM, NDF, and N digestibility compared with GC. Overall, both the SBH and PH diets resulted in greater DMI and ADG than the control diet, which lacked supplemental fiber.

Original languageEnglish (US)
Pages (from-to)507-515
Number of pages9
JournalJournal of animal science
Volume77
Issue number3
DOIs
StatePublished - Mar 1999

Keywords

  • Digestibility
  • Fiber
  • Growth
  • Maize

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

Fingerprint Dive into the research topics of 'Effects of Corn Processing and Dietary Fiber Source on Feedlot Performance, Visceral Organ Weight, Diet Digestibility, and Nitrogen Metabolism in Lambs'. Together they form a unique fingerprint.

  • Cite this