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External (ecto) parasites

External parasites are organisms that live on or within the skin of their host or lay eggs in their nasal passages. They include lice, ticks, mites, and flies. Winter is usually the season when external parsites are most problematic, as animals are often held in close confinement; thus, the parasites can easily be spread from one animal to another. On this page, links are listed alphabetically according to pest or topic: blow flies, general information, fleas, lice, mites, nose bots, pest control, screwworms, and ticks.

Blow flies (fly strike)

Blow flies - North Carolina State University
[PDF] Blowfly in sheep - Newfoundland and Labrador, Canada
Blow flies - NSW, Australia
[PDF] Blowfly strike in sheep - SCOPS, DEFRA UK
[PDF] Blowfly strike in sheep - NADIS UK
Fly strike - Smallstock in Development
[PDF] Fly strike in sheep - V.E. Veterinary Services Ltd.
Prevention of Flystrike in Non Mulesed Sheep - Western Australia
Quick guide to commonly used treatments for blowflies and lice
[PDF] Recent developments in the control of fly strike - University of Sidney
Screwworm flies as agents of wound myiasis - FAO
Sheep blowflies: cost effective management to minimise wool residues
Sheep Blow Flies of Victoria | PDF
Sheep parasites: management of blow flies - Queensland, Australia
Treating flystruck sheep - Western Australia | PDF | YouTube

Fleas

[PDF] Flea infestation in farm animals and its health implication
Fleas - University of Florida | PDF
Fleas and ticks - University of Florida | PDF

General information

[PDF] Biology of external parasites of dairy goats - University of Florida
[PDF] Common Ectoparasite Infestations in Sheep - NADIS UK
[Class notes] Ectoparasites of cattle, sheep, and horses
[PDF] External Parasites - Pipestone Vet Clinic
[PDF] External Parasites - Utah State University
[PDF] External parasites of goats - Langston University
External parasites: The biology of the goat
External parasites of sheep and goats - University of Florida | PDF
[PDF] External parasites - University of New Hampshire
[PDF] External Parasites of Goats - Oklahoma State University
External parasites around animal facilities - University of Florida | PDF
[PDF] Insects and related pests of livestock in Wyoming
[PDF] Insect pests of livestock - West Virginia University
Livestock pest management - University of Florida
Pet and livestock pests - University of Florida
[PDF] Sheep external parasites - Virginia Tech
Sheep Pests - University of Kentucky
[PDF] Skin parasites of sheep - DEFRA UK

Lice

Avoiding sheep lice - Victoria, Australia
Checking sheep for lice - South Australia | PDF
[PDF] Chewing and sucking lice - Michigan State University
Controlling lice in goats -- by Jackie Nix
[PDF] Control of body lice on some new breeds of sheep - W. Australia
Dealing with lice on goats - Sweetlix®
Goat Health: Lice - NSW, Australia | PDF
[PDF] Itch mite in sheep - Western Australia
Lice - Biology of the Goat
Lice - Merck Veterinary Manual
LiceBoss - Australian Wool Innovation Ltd. (AWI)
Lice on goats - ACGA Goat Notes
[PDF] Monitoring sheep for lice - LiceBoss Australia
Sheep and goat lice - Western Cape, South Africa
Sheep body lice - Victoria, Australia
Sheep Lice - NSW, Australia | PDF
Sheep lice facts - South Australia | PDF
Sheep body lice: control and eradiciation - Victoria, Australia
[PDF] Sheep louse control for ewes and lambs - Western Australia
Sheep parasites: management of body lice - Queensland, Australia
Stomach worms and lice - Onion Creek Ranch

Mites

[PDF] Chorioptic mange in sheep - NADIS UK
[PDF] Control of sheep scab and other ectoparasites of sheep- SAC
[PDF] Itch mite in sheep - Western Australia
Mange in sheep and goats - Merck Veterinary Manual
Mites - Biology of the Goat
[PDF] Sheep scab - NADIS UK
[PDF] Sheep scab - Iowa State University
Sheep scab control farming UK
[IMAGES] Sheep scab - Western Cape, South Africa
[PDF] Sheep scabies - Navajo Sheep Project

Nose or nasal bots (bot flies)

[PDF] Nasal bots in sheep - Western Australia
[PDF] Sheep bot fly biology and management - University of Wyoming
Sheep bot flies - North Carolina State University
[Flickr™] Sheep nasal bot fly
Sheep nose bot - Merck Veterinary Manual

Pest Control

[PDF] Controlling external parasites on the organic farm
Control of insect and related pests of Livestock in British Columbia
[PDF] Control of sheep pests - Purdue University
[PDF] Controlling lice and other external parasites on goats - MLA
[PDF] Effective control of ectoparasites in sheep - Meat Promotion Wales
[PDF] Fly control measures - UMass Extension
[PDF] Insect control on sheep and goats 2011 - University of Kentucky
[PDF] Livestock pest management - Michigan State University
[PDF] Livestock pest products - Ohio State University
[PDF] Management of external parasites of sheep and goats - Univ. Florida
Managing external parasites of Texas livestock and poultry | PDF
[PDF] Pest management recommendations for sheep, goats, and swine
[PDF] Pest control: sheep and non-lactating goats - Ohio St. University
Products used to treat and control external parasites in livestock
Sheep and Goat Insect Management - University of Nebraska
[PDF] Sheep External Parasites - Virginia Tech
Sheep parasites: Integrated pest management - Queensland, Australia 
Suggestions for managing external parasites of Texas Livestock

Screwworms

About screwworm fly - Animal Health Australia
Screwworm - USDA APHIS
[PDF] Screwworm myiasis - Washington State University
[PDF] Screwworm poster
Screwworms: be on the look out - UC Davis

Ticks

[PDF] Common ticks of Oklahoma and tick-borne diseases - Okla. State
[PDF] Control of sheep keds - Washington State University
Sheep Ked - North Carolina State University
Sheep Ked - Purdue University
[PDF] Sheep keds - University Wyoming
[PDF] The ticks of Newfoundland

       Goat with mange

The Maryland Small Ruminant Page [sheepandgoat.com] is a privately-owned web site. It was created in 1998 as an information portal for sheep and goat producers and anyone else interested in small ruminant production. The web site includes original documents and images as well as a comprehensive list of links pertaining to small ruminants and related topics. The web site was developed and is solely maintained by Susan Schoenian, Extension Sheep & Goat Specialist at the University of Maryland's Western Maryland Research & Education Center in Keedsyville, Maryland. Susan has been with University of Maryland Extension since 1988. She earned B.S. and M.S. degrees in Animal Science from Virginia Tech and Montana State University, respectively. Susan raises purebred and crossbred Katahdin sheep on a small farm she calls The Baalands in Clear Spring, Maryland. Please direct all questions, comments, or suggestions to Susan at sschoen@umd.edu.

Disclaimer: The information and links contained on the Maryland Small Ruminant Page [sheepandgoat.com] and other pages created by Susan Schoenian are for informational purposes only and do not constitute an endorsement of any person, organization, business, product, or web site. The author disclaims any liability in connection with the use of this information. Common sense and sound judgement should be applied to all information obtained from the web, regardless of source. In matters of animal health, producers are advised to seek competent veterinary assistance.

Last updated 01-Feb-2012 by Susan Schoenian.