Equine Diseases D. Karen Hansen, PhD 2001 University of Wyoming

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Presentation transcript:

Equine Diseases D. Karen Hansen, PhD 2001 University of Wyoming Stephen R. Schafer, EdD 2006 University of Wyoming

Information Development Much effort and time was devoted to: developing accurate/current information incorporating appropriate pictures/graphics providing proper credit of pictures/graphics obtaining user/educational permission Any and/or all errors, omissions, etc. are purely unintentional and/or accidental. This presentation was developed for use as resource and is provided as an educational service. User and/or purchase fees are not associated with this presentation.

Disease Management Prevention is the singularly most important aspect Vaccinate regularly with your veterinarian’s advice Keep horse areas cleaned up and sanitized Proper feeds and feeding management Control is invaluable once a disease is diagnosed Separate ill horses (have an isolation area) Disinfecting is a cornerstone of many control measures Cure is the goal once a disease is diagnosed Get treatment early to avoid additional complications Rigorously follow the prescribed treatment guidelines

Rabies Common in some areas, not in others Viral Disease/Infection Animal to animal transmission by a bite Vaccinate

Encephalomyelitis Equine Encephalomyelitis Encephalitis = inflammation of the brain Commonly known as “sleeping sickness” Viral Disease/Infection (three types or stains): Eastern Western Venezuelan Transmitted by mosquitoes Vaccinate

Tetanus Also known as “lockjaw” Causes muscle stiffness Muscle/body rigidity Mostly fatal Caused by the bacterium Clostridium tetani Spores can live anywhere Enter body through wounds Vaccinate

Exertional Rhabdomyolysis Also known as “azoturia” and “tying up” Metabolic disorders involving muscles Soreness and stiffness of muscle usually upon exercise Cause is abnormal carbohydrate metabolism Control measures/recommendations include Lower soluble carbohydrates in diet is usually helpful More vigorous monitoring of feeding practices Proper conditioning of horse is essential

Influenza Commonly, it is simply known as the “flu” Very common respiratory disease Causes dry cough, clear nasal discharge fever Very debilitating; esp. if put back to work too soon Highly contagious Viral Disease/Infection Vaccinate, frequently New strains evolve and develop Traveling, different areas may have a different strain

Rhinopnemonitis Known as “rhino” (in many areas of US) Rhinopnemonitis = EHV - 1 and EHV-4 Both cause respiratory problems; dry cough, clear nasal discharge EHV-1 can also cause abortion in pregnant mares Highly contagious Vaccinate, frequently Especially pregnant mares, due to abortion factor Because it is highly contagious

Strangles Known as “strep throat” of horses Symptoms are: sore throat, abcesses of lymph nodes, off feed, and fever Usually affects young horses Highly contagious Mortality is usually low Bacterial disease, caused by Streptococcus equi Daily monitoring of horse is key for early detection

Chronic Obstructive Pulmonary Disease Commonly known as “heaves” Allergic reaction by bronchioles; similar to asthma/asthmatic reactions in humans Control measures/recommendations include Do not feed dusty or moldy hay Do not feed dusty or moldy other feedstuffs More vigorous monitoring of feeding practices

Chronic Obstructive Pulmonary Disease (Heaves) Drawing: Equus

Flu, Rhino, Strangles, & Heaves: All Respiratory Problems Of Some Sort Drawing: Equus

Other Diseases Other diseases may be a problem Can/will vary from location to location Others diseases that may be encountered Equine Viral Arteritis Potomac Horse Fever (transmitted by ticks) Equine Infectious Anemia (swamp fever) Transmitted by mosquitoes More common in warmer/humid climates Coggins Test or Elisa test for antibodies, required for all horses traveling out of state

Colic

What Is Colic? A syndrome (not an actual disease) It is caused by digestive tract problems Located in the abdominal cavity Colic = much pain for the horse

Colic Is Digestive Problems Drawing: Unknown Source

Signs Of Colic Off feed Uneasiness and rolling Looking at abdomen Kicking at abdomen Sweating Increased heart rate (> 60 bpm) Increased respiration rate

Types Of Colic Gaseous: gas formation in the digestive tract Impaction: blockage of the intestine Spasmodic: severe contraction of intestine Intestinal Accidents: twists, hernia, etc.

Causes Of Gaseous Colic Over Ingestion of Feed Too much grain Too much lush green grass Greedy Eating (gaseous or impaction) Moldy or Spoiled Hay Moldy or Spoiled Feed

Causes Of Impaction Colic Low Quality Indigestible Roughage Sand and/or Other Foreign Objects Mineral Imbalance Improper Chewing (due to lack of tooth care) Greedy Eating (can be impaction or gaseous) Lack of Water Lack of effective regular deworming

Causes Of Spasmodic Colic Feeding large amounts infrequently Too much water given to hot horse Irregular exercise Stress

Treatment Of Colic Usually considered a veterinary emergency Treatment is dependent on type of colic Pain killers (provide comfort) Mineral oil (ease of movement, relieve pressure) Rehydration Surgery

Colic: Preventative Measures Free Choice High Quality Water High-quality = cool, clear, and clean Except immediately after work Adequate Regular Exercise Daily exercise, if confined Proper Health Care Keep all vaccinations current Regular dental examinations Follow deworming guidelines

Colic: Preventative Measures High Quality Feedstuffs No mold or dust No fines or finely ground feeds Adequate Forage High-quality & digestible forage/hay = fewer stems, more leaves Daily, a minimum of 1% of horse’s body weight in forage or hay Sound Feeding Management Feed horses individually Feed horses at regular intervals Feed up off the ground in feeders Spread grain out in a shallow feeder Split into 2 or more feedings if grain exceeds .5% of body weight

Related/Similar Diseases Laminitis (Founder): can be caused by over ingestion of soluble carbohydrates Tying Up; Azoturia: can be caused by over ingestion of soluble carbohydrates when workload is reduced

Reducing Colic: Why? “The right thing to do” Performance enhancement To reduce the chance of large and preventable veterinary bills Possible loss of the horse ($)

Colic: In Review Pain in the abdomen Colic can be mild or life-threatening Can be caused by lack of parasite control, poor feeding management, lack of proper health care Management causes are largely preventable

Equine Diseases: Summary Prevention Control Cure