b'Arizona Ask the VetREAL COUNTRY SUMMER the magazine SORESMike BarnaPublisher T his is the time of year (late summer and earlylesions tend to ArizonaRealCountryMagazine@gmail.com fall) we see a lot of sores around horses eyes,grow rapidly and on their lips, the external genitalia of geldingsusually cause and stallions, or developing wherever a horse hashorse owners to Erika Smith Royal cuts or abrasions. Areas on the limbs, especiallyseek veterinary Editor from the fetlock to the coronary band, areadvice within a frequently prone to mild cuts, scrapes, and traumafew days.erika963realcountry@gmail.com and thus can also be susceptible to sores. Parasites like ticks and flies also can irritate the horse, andVarious skin tumors, such as sarcoid or squamous Misty Voitovski the animal\'s subsequent rubbing and scratchingcell carcinomas, can also look like summer sores. Creative Director can damage skin, allowing entry to Habronema orAlso included on the differential diagnosis list Draschia species larvae. would be various fungal skin infections, foreign Contributing Writers A term for the skin condition caused by the body granulomatous reactions and pythiosis.Lee AndersonBob Boze Bell larvae of the Habronema or Draschia speciesThe classic summer sore is usually a firm, sometimes worms is "summer sores." The adult worms ofround reaction in the skin that produces proud flesh Deborah BlankenshipBridgette Crosbythese species live on the inside wall of the equineand will often contain hard, small, yellow granules. Pete FloresJustin Leglerstomach and do not migrate internally. MostThe sores can be very small in the early stages or can horses with gastric Habronemiasis or Draschiacreate very large proud flesh reactions.Betsy LemaireNaomi Loomis species infestation do not show any clinical signs, Randy MillerJim & Bobbi Jeen Olsonand actual damage or impact to an adult horse isPREVENTIONthought to be minimal. Heavy infestation in someFly control, manure removal and the quick Bill RobertsAlan Rockman individuals, however, has been known to causeand appropriate treatment of skin wounds and stomach irritation and can even lead to perforationinfections can greatly reduce the incidence John SamsillHank Sheffer and possible stomach rupture.and severity of summer sores. Habronema is Caroline WerkhovenMichele Wilson susceptible to ivermectin, so in areas where The normal cycle for the worms begins whensummer sores are present, it is best to administer the eggs are excreted in the manure and into theivermectin to all horses. A repeat administration 801 W. Wickenburg Way environment. These embryonated or developingof ivermectin in one month is ideal, as the flies that eggs are ingested by the larvae of various types ofcarry the larvae can remain in the environment for Wickenburg, AZ 85390 flies. House, stable, and face flies are all commonlyseveral weeks. Protection from ticks and fly larvae associated with Habronema and Draschia speciesmay be one of the first modifications that should (602) 254-6644 egg development since these flies start as larvae inbe considered.ArizonaRealCountry.com manure piles. Fly larvae grow and develop, and the adult flies serve as both incubators and carriers,Solitude IGR, Equitrol II, or SimpliFly oral feed allowing the stomach worm eggs to develop intoadditives that act as an insect growth regulator more advanced larval stages inside the flies thatcontaining cyromazine, can be considered. This then transport them to re-enter the horse. Whenprevents the larvae from developing exoskeletons these infected flies land near a horse\'s lips, theso they cannot become adults. It does not get larvae are released and swallowed by the horse,absorbed by the horse but passes through their completing their life cycle. digestive tract to be passed in their manure. The Follow Arizona Realmaggots then ingest the cyromazine while feeding Country for news, events,These "out of place" larvae cannot grow into adulton the manure and the immature fly will die before worms in these locations but can induce a severespreading Habronema larvae. This significantly giveaways and more! local inflammatory reaction characterized byreduces the fly population in just 4 to 6 weeks. intense swelling, ulceration, redness, and itching.Cyromezine can be used as a spray. Mix it with They typically start out looking pretty innocuous,water and spray where flies breed (your manure Arizona Real Country is owned andbut will later become large, open sores. Thesepile) every few weeks. published by Barna Broadcasting LLC. No person, organization or partyFly Predators, also referred to as Fly can copy or reproduce the contentParasites and Fly Eliminators are a tiny on our website and/or magazine orwasp that kills manure breeding flies in any part of this publication withouttheir larval stage before they emerge as a written consent from the editorsadults and can start laying eggs. Ideally panel and the author of the content, asyou want to start releasing Fly Predators applicable. The publisher, authors andin the spring once temperatures start to contributors reserve their rights withwarm up and the fly population is low. Depending on the number of animals regards to copyright of their work. you have make follow up releases every 2 to 4 weeks thru the fly season. continued on page 6ArizonaRealCountry.com August 2023 5'