Pathological features in sheep fed rations containing phenolsand condensed tannins

O. Mahgoub, I. T. Kadim, M. H. Tageldin, W. S. Al-Marzooqi, Samera Khalaf, Aisha Ambu Ali, I. Al-Amri

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4 Citations (Scopus)


A study was carried out to investigate the effects of feeding low quality non-conventional feeds (NCFs) containing phenols and condensed tannins on the pathological features of sheep. Thirty-two sheep were fed one of 4 ration combinations of 2 roughages, urea treated palm frond and Rhodesgrass hay and 2 concentrates, commercial concentrate and by-products concentrate for 120 days. Non-conventional feeds (palm frond and by-product concentrate) contained higher levels of phenols and condensed tannins than conventional ones (Rhodesgrass hay and commercial concentrate). Villus height and height: Crypt depth ratio were significantly lower in animals on the NCFs. There were signs of chronic inflammation in the intestine; the kidneys showed signs of nephritis and the liver showed congestion and hemorrhagic changes. This experiment indicated that feeding non-conventional feeds containing phenols and condensed tannins for extended periods may produce subtle negative effects on animal health and production.

Original languageEnglish
Pages (from-to)1105-1109
Number of pages5
JournalJournal of Animal and Veterinary Advances
Issue number9
Publication statusPublished - 2008



  • Non-conventional feeds
  • Pathology
  • Phenols
  • Sheep
  • Tannins

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • veterinary(all)

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