Please enable JavaScript.

Coggle requires JavaScript to display documents.

Cattle parasites - Coggle Diagram

- - - - abomasal parasites
      - requires multiple samples
    - - bulk milk testing
      - O.ostertagia
      - related to losses in milk yield
  - - - over frequent treatment
      - under dosing
  - - - if high challenge then growth rates are reduced
      - grazing strategies
        
        graze pastures on low risk fields
        
        newly seeded lays
        
        not use for at least 1y
        
        graze on contaminated pasture
        
        move to silage fields once harvested
        
        treat as you move
        
        potentially leave 10% untreated
- - - - lacks sensitivity
      - requires adult fluke
      - no link to parasite numbers
      - beef
        
        composite faecal egg samples helpful
        
        10 animals
        
        pooled sample at lab
    - - bulk milk sample
        
        presence of antibodies not definitive of infection
        
        monitor efficacy of control programmes
- - - - larvae go dormant in the gastric glands of abomasum
        
        coordinated emergence in spring can cause significant damage to the abomasum
      - signs
        
        loss of appetite
        
        loss of body weight and condition
        
        disrupts digestion leading to diarrhoea
      - acquiring immunity
        
        can take up to two grazing seasons
        
        immunity never complete
        
        only develops when cattle graze pasture
        
        naive
        
        summer born dairy calves
        
        never grazed
- - - - Bovicola bovis
      - Linognathus vituli
      - Haematopinus euryternus
      - Solenopotes capillatus
    - - pour ons or if sucking injectables can be used
      - louse eggs not affected so residual activity over 2w required to kill these
      - resistance to Permethrin recorded
  - - - Chorioptic
        
        permethrin pour on
        
        macrocyclic lactones topically
      - Psoroptic
        
        difficult
        
        must treat all animals
        
        remove to clear area
        
        doramectin twice 4 weeks apart
        
        4% permethrin
      - Sarcoptic
        
        systemic macrocyclic lactones seem to be effective
      - Demodectic mange
  - - - Ixodes ricinus
      - I. Hegonus
      - I. canisuga
      - I. scapularis
      - Dermacentor reticulatus
      - Haemaphysalis punctata
      - Rhipicephalus sanguineus
    - - babesiosis
        
        babesia divergens
      - tick borne fever
        
        anaplasma phagocytophilum
      - louping ill virus