The effect of dietary sainfoin ( Onobrychis viciifolia) on local cellular responses to Trichostrongylus colubriformis in sheep.

نویسندگان

  • L Ríos-de Alvarez
  • A W Greer
  • F Jackson
  • S Athanasiadou
  • I Kyriazakis
  • J F Huntley
چکیده

The effect of sainfoin (Onobrychis viciifolia) hay consumption on the pathophysiology and local cellular responses of growing lambs during infection with Trichostrongylus colubriformis was investigated. Thirty-two lambs, 16 weeks of age, were allocated to 1 of 4 treatment groups (n=8) that were offered either grass (G) or sainfoin (S) hay while concurrently either infected (+), or not (-) with 12,000 L3 T. colubriformis larvae per week for 6 weeks. Liveweight gains were affected by diet (P=0.002) and reduced by infection (P<0.05). Faecal egg count was reduced in S+compared to G+ from days 35 to 42 (P=0.001); however, total egg output, worm burdens at day 42 and worm fecundity were similar between diets (P>0.05).Feeding sainfoin appeared to enhance immune cell development with tissue eosinophils, mast cells and pan T cells present in greater concentrations in S+ than in G+ animals. However, further studies are required to determine if the enhanced immune cell development is a consequence of a greater nutrient supply or a direct influence of sainfoin metabolites on local inflammatory responses to the gastrointestinal nematode T. colubriformis.

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عنوان ژورنال:
  • Parasitology

دوره 135 9  شماره 

صفحات  -

تاریخ انتشار 2008