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Journal of Veterinary Science ; : 375-379, 2008.
Article Dans Anglais | WPRIM | ID: wpr-65392

Résumé

Healthy ruminants carry intestinal Shiga toxin (Stx)-producing Escherichia coli (STEC). Stx has antiviral activities in vitro and STEC numbers correlate with reduced early viremia in sheep experimentally infected with bovine leukemia virus (BLV). This study assessed the impact of intestinal STEC on BLV-induced disease for one year post-BLV-challenge. High STEC scores (CFU/g feces x frequency of STEC-positive samples) correlated with good health, whereas poor weight gain, distress, and tumor development occurred only among animals with low STEC scores. STEC carriage was associated with increased percentages of B cells in peripheral blood.


Sujets)
Animaux , Mâle , Infections à deltarétrovirus/microbiologie , Intestins/microbiologie , Virus de la leucémie bovine/physiologie , Ovis , Maladies des ovins/microbiologie , Escherichia coli producteur de Shiga-toxine/physiologie
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