Cattle%20Parasites

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Cattle Parasites
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Intestinal Nematodes

• Loss of appetite
• Immuno-suppression
• Destruction of gastric glands and interference
  with protein digestion
• Loss of tissue fluid

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Strongyles

• Over 30 different genera and/or species of
  intestinal nematodes which have eggs that look
  similar.
• Strongyles or strongyle-type eggs
• In general, treated the same
• Digestive tract
• May compete for nutrients, cause tissue damage,
  or suck blood (anemia)

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Strongyles
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Trichostrongyles

• Ostertagia ostertagi
• Recognized as the most important nematode
  parasite of cattle raised in temperate climates
• Can developmentally arrest
• Large economic impact on cattle industry
  treatment and prevention costs

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Ostertagia ostertagi

• Brown stomach worm
• 6-10 mm
• Larvae destroy gastric glands
• Severe diarrhea weight loss
• Fecal flotation
• Tx Albendazole, Fenbendazole, Ivermectin,
  Moxidextin

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Cooperia spp.

• Cattle bankrupt worm
• 4-8 mm
• D
• Anorexia
• Depressed growth
• Synergistic with Ostertagia ostertagia
• Fecal flotation
• Tx Albendazole, Fenbendazole, Ivermectin,
  Moxidectin

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Bunostomum spp.

• Hookworm
• 10-28 mm
• Anemia
• D
• Weight loss
• Fecal flotation
• Tx Albendazole, Fenbendazole, Ivermectin,
  Moxidectin

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Trichuris ovis

• Whipworm
• 2-3 mm
• Rarely pathogenic
• Fecal flotation
• Tx Fenbendazole, Ivermectin

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Capillaria sp.

• Capillary worm
• 5-8 mm
• Mostly nonpathogenic
• Fecal flotation
• Tx None tested

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Dictyocaulus viviparus

• Lungworm
• 3-8 cm
• Cough
• Dyspnea
• Lethargy
• Baermann technique, fecal flotation
• Tx Albendazole, Fenbendazole, Ivermectin,
  Moxidectin

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Fasciola hepatica

• Common liver fluke
• 3-4 cm
• Hepatic trauma
• Hepatitis
• Death
• Fecal sedimentation
• Tx Albendazole, Clorsulon, Nitroxynil, Raoxanide

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Moniezia benedeni

• Tapeworm
• Up to 100 cm
• Mostly nonpathogenic
• Proglottids on stool, fecal flotation
• Tx Albendazole, Dichlorophen, Fenbendazole,
  Niclosamide

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Tritrichomonas foetus

• Trich
• Protozoan
• 10-25 um
• Early abortion storms
• Pyometra
• Preputial washings culture
• Tx Ipronidazole, Metronidazole

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Babesia bigemina

• Babesia, Texas Cattle Fever
• 2-3 um x 4-5 um
• Anemia
• Fever
• Splenomegaly
• Blood smear
• Tx Antibiotics, Dip for ticks

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Eimeria spp.

• Coccidia
• 16-47 um x 13-32 um
• Bloody diarrhea
• Death
• Decreased production
• D
• Fecal flotation
• Tx Amprolium, Sulfamethazine

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Cryptosporidium spp.

• Crypto
• 6 um x 6 um
• Zoonotic
• D
• Fecal flotation
• Tx Supportive care

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Cochliomyia hominivorax

• Screwworm
• Up to 15 mm
• REPORTABLE
• Maggots penetrate tissue
• Identify larvae
• Tx Ivermectin, Organophosphates

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Cochliomyia hominivorax

• Female can lay up to 500 eggs per day
• Eggs hatch 12 hours
• Larvae feed and produce dark, foul-smelling
  liquid which attract more flies can quickly
  become infested with thousands of larvae
• Larvae feed for 5-7 days before dropping to
  ground as pupae
• Pupae hatch into adults 7 days

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Sarcoptes scabiei

• Mange mite
• REPORTABLE in some states
• Skin scraping
• Tx Ivermectin, Eprinomectin, Doramectin

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Cattle Grub or Warbles

• Hypoderma bovis or Hypoderma lineatum
• Significance hide and flesh damage economic
  loss, irritation weight loss and decreased milk
  production
• Diagnosis look for breathing pores or eggs on
  coat
• Treatment Avermectins

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Cattle Grub
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