Parasite Control

1
Parasite Control

• Parasite
• Is an organism that makes its living at the
  expense of another

2
Parasite Control

• Ectoparasites
• Flies, lice, ticks
• Endoparasites
• Nematodes (worms)
• Protozoans (coccidia, cryptosporidia)

3
Parasite Control

• Ectoparasites (Flies, lice, ticks)
• Can cause loss of production
• More important as carriers (vectors) of disease
• Pink eye, Lyme disease, blue tongue,
  anaplasmosis
• Control by topical insectisides
• Eprinex, Ivomec (not for lactating cows)

4
Parasite Control

• Endoparasites- Nematodes
• Most critical for younger animals
• Have to be ingested from pasture
• Most infective during warm, wet weather
• Can cause weight loss
• Control by deworming at strategic times of year-
  summer, fall

5
Parasite Control

• Endoparasites - Protozoans
• Most critical for younger animals
• Have to be ingested from contaminated feed,
  feeders, bedding
• Can cause weight loss-severe diarrhea
• Control by cleaning feeding equipment
• Coccidiostats in feed , e.g. ionophores for
  heifers gt 3 mos of age