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Cattle Parasites. Intestinal Nematodes Loss of appetite Immuno-suppression Destruction of gastric glands and interference with protein digestion Loss.

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Presentation on theme: "Cattle Parasites. Intestinal Nematodes Loss of appetite Immuno-suppression Destruction of gastric glands and interference with protein digestion Loss."— Presentation transcript:

1 Cattle Parasites

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

3 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)

4 Strongyles

5 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

6 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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12 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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14 Bunostomum spp. Hookworm mm Anemia D+ Weight loss Fecal flotation Tx: Albendazole, Fenbendazole, Ivermectin, Moxidectin

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16 Trichuris ovis Whipworm 2-3 mm Rarely pathogenic Fecal flotation Tx: Fenbendazole, Ivermectin

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19 Capillaria sp. Capillary worm 5-8 mm Mostly nonpathogenic Fecal flotation Tx: None tested

20 Dictyocaulus viviparus Lungworm 3-8 cm Cough Dyspnea Lethargy Baermann technique, fecal flotation Tx: Albendazole, Fenbendazole, Ivermectin, Moxidectin

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22 Fasciola hepatica Common liver fluke 3-4 cm Hepatic trauma Hepatitis Death Fecal sedimentation Tx: Albendazole, Clorsulon, Nitroxynil, Raoxanide

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25 Moniezia benedeni Tapeworm Up to 100 cm Mostly nonpathogenic Proglottids on stool, fecal flotation Tx: Albendazole, Dichlorophen, Fenbendazole, Niclosamide

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28 Tritrichomonas foetus Trich Protozoan um Early abortion storms Pyometra Preputial washings & culture Tx: Ipronidazole, Metronidazole

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31 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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33 Eimeria spp. Coccidia um x um Bloody diarrhea Death Decreased production D+ Fecal flotation Tx: Amprolium, Sulfamethazine

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35 Cryptosporidium spp. Crypto 6 um x 6 um Zoonotic D+ Fecal flotation Tx: Supportive care

36 Cochliomyia hominivorax Screwworm Up to 15 mm REPORTABLE Maggots penetrate tissue Identify larvae Tx: Ivermectin, Organophosphates

37 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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41 Sarcoptes scabiei Mange mite REPORTABLE in some states Skin scraping Tx: Ivermectin, Eprinomectin, Doramectin

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43 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

44 Cattle Grub

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