Fig. 4From: Anti-parasitic activity of pelleted sainfoin (Onobrychis viciifolia) against Ostertagia ostertagi and Cooperia oncophora in calvesExternal structural changes of adult Ostertagia ostertagi recovered from calves fed sainfoin for 58 days. Scanning electron microscopy of representative worms recovered 42 days post-infection from Control group (CO) (a, b) or Sainfoin group (SF) (c, d). Left column: tail of the female worm; Right column: close view of the cuticleBack to article page