Controlling Horn Flies, Lice, Grubs and Ticks on Cattle by Chemical Use

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Controlling Horn Flies, Lice, Grubs and Ticks on
Cattle by Chemical Use

• Floron C. Faries, Jr., DVM, MS
• Professor and Extension Program Leader for
  Veterinary Medicine
• Texas AgriLife Extension Service
• Texas AM System

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Horn Flies
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Horn Fly Allergy
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Cattle Lice
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Heel Flies Cattle Grubs
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Spinose Ear Ticks (Soft Ticks)
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Body and Ear Ticks (Hard Ticks)
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Fever Ticks (One Host Ticks)

• Cattle
• Horses
• White-tailed deer, elk, Nilgai, red deer
• Not sheep, goats, swine, dogs

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Tick Stages Eggs, Larvae, Nymphs, Adults
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Permanent Fever Tick Quarantine Zone

• 200 yards to 6 miles wide
• 500 miles along Rio Grande
• Del Rio to Brownsville
• 8 counties
• Val Verde
• Kinney
• Maverick
• Webb
• Zapata
• Starr
• Hildalgo
• Cameron

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Temporary Preventive Fever Tick Quarantine Area

• 2007
• Expanded portions of Starr and Zapata counties
• Small area of Jim Hogg county
• 2008
• Expanded portions of Starr, Zapata, Webb and
  Maverick counties
• Small areas of Jim Hogg and Dimmit counties

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Hand-Treatment Methods

• Body Spray
• Back Pour-on
• Back Dust
• SQ Injection
• Oral Bolus
• Ear Swab
• Body Dip

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Hand Pressure Sprayer
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Shower Pressure Sprayer
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Back Pour-on
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Back Pour-on
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Back Pour-on
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Ear Swab
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Dipping Vat
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Dipping Vat
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Dipping Vat
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Dipping Vat
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Dipping Vat
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Self-Treatment Methods

• Ear Tags
• Back Rubber
• Dust Bag
• Supplement Blocks

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Ear Tags
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Dust Bags
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Supplemental Blocks
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Organophosphates

• Coumaphos
• Phosmet
• Fenthion
• Chlorvinphos
• Dichlorvos
• Chloropyrifos
• Diazinon
• Ethion
• Pirimiphos

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Pyrethroids

• Permethrin
• Fenvalerate
• Cypermethrin
• Cyfluthrin
• Lambdacyhalothrin
• Zetamethrin
• Cyhalothrin

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Chlorinated Hydrocarbons

• Methoxychor

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Formamidines

• Amitraz

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Macrolides

• Ivermectin (Ivomec)
• Eprinomectin (Eprinex)
• Doramectin (Dectomex)
• Moxidectin (Cydectin)

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Synergists

• Piperonyl Butoxide
• Dicarboxamide MGK 264

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Insect Growth Regulators

• Chlorvinphos
• Diflubenzuron

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READ AND FOLLOW THE LABEL

• Precautions to prevent poisoning
• Follow labeled dose
• Follow labeled interval
• Follow labeled minimum age
• Follow labeled animal species