Effects of adding a concentrated pomegranate-residue extract to the ration of lactating cows on in vivo digestibility and profile of rumen bacterial population

E. Jami, A. Shabtay, M. Nikbachat, E. Yosef, J. Miron, I. Mizrahi

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

This study characterizes the effects of concentrated pomegranate-peel extract (CPE) addition to the TMR at levels of 1, 2, or 4% on voluntary intake, in vivo digestibility, milk yield and composition, and profile of rumen bacterial and archaeal populations in lactating Holstein cows. Supplementation of CPE significantly affected the abundance of methanogenic archaea and specific ruminal bacterial species related to cellulolytic activities and soluble sugar and lactic acid fermentation, as revealed by real-time PCR quantification. Furthermore, CPE supplementation had a significant dose-dependent effect on the whole ruminal bacterial community, as determined by automated ribosomal intergenic spacer analysis. These changes were accompanied by a significant increase in digestibility of dry matter, crude protein, and neutral detergent fiber, as well as milk and energy-corrected milk yields in cows fed the 4% CPE supplement. These results suggest that CPE supplementation significantly affects the rumen bacterial communities, which in turn may be related to a beneficial effect on dairy cow performance.

Original languageEnglish
Pages (from-to)5996-6005
Number of pages10
JournalJournal of Dairy Science
Volume95
Issue number10
DOIs
StatePublished - 1 Oct 2012
Externally publishedYes

Keywords

  • Digestibility and performance
  • Lactating cow
  • Pomegranate-residue extract
  • Rumen bacterial population

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

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