Neospora caninum Abortion in Cattle Guy Sheppard, DVM Neospora caninum is a protozoal organism that is associated with abortion in cattle and the birth of weak calves. Dogs are the definitive hosts for this organism, and the organism is spread … [Read more...]
Histopathologic Diagnosis of Feline Herpesvirus
Histopathologic Diagnosis of Feline Herpesvirus Erin Edwards, DVM, MS, DACVP and Jay Hoffman, DVM, PhD, DACVP Feline herpesvirus is a highly transmissible, viral disease that is very common in cats. This disease is also known as feline viral … [Read more...]
Possible Wilted Maple Poisoning in Mare
Possible Wilted Maple Poisoning in Mare Cat Barr, PhD, DABT A 7-year-old pastured mare suffered an acute onset of hemolytic anemia and hematuria. The blood drawn for analysis was hemolyzed and dark. The mare died about three hours after … [Read more...]
Canine Coccidiosis
Canine Coccidiosis Jai Guha, Mindy Borst, LVT, and Julie Piccione, DVM, MS, DACVP An 11-year-old Corgi mix was presented to the veterinarian with intermittent diarrhea and inappetence. History noted the dog had clinical signs of gastrointestinal … [Read more...]
Acute Toxoplasma gondii Infection Confirmed in a Canine
Acute Toxoplasma gondii Infection Confirmed in a Canine Cheryl Maguire, DVM An adult, mixed-breed dog was presented to their veterinarian for progressive lethargy, fever, and abdominal distension. The dog had recently started treatment with … [Read more...]
Drug Testing During the Fall Livestock Show Season
Drug Testing During the Fall Livestock Show Season Travis Mays, MS, PhD Between the months of August to December, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) performs drug testing on more than 1,000 urine, blood, fecal, and … [Read more...]
Ehrlichia canis discovered in dog
Ehrlichia canis discovered in dog Julie Piccione, DVM, MS, DACVP, Pam Ferro, MS, PhD, and Megan Schroeder, PhD A 7-year-old, neutered Labrador Retriever was presented to their veterinarian for acute onset of lethargy, inappetence, and epistaxis. … [Read more...]
Contagious Ecthyma Diagnosed in a Young Goat
Contagious Ecthyma Diagnosed in a Young Goat Erin Edwards, DVM, MS, DACVP, Andrés de la Concha-Bermejillo, DVM, PhD, Pam Ferro, MS, PhD The body of a 3-month-old goat was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory … [Read more...]
Bovine Abortion Caused by Leptospira spp.
Bovine Abortion Caused by Leptospira spp. Guy Sheppard, DVM, Gabriel Gomez, DVM, PhD, Pam Ferro, MS, PhD, and Megan Schroeder, PhD Tissue from a cross-bred bovine fetus in the third trimester of gestation was submitted to the Texas A&M … [Read more...]
Diagnosing Feline Heartworms
Diagnosing Feline Heartworms By Melanie T. Landis, DVM, MBA, TVMDL Microbiology Veterinary Diagnostician We are all familiar with the saying that “cats are not small dogs”. This is true when it comes to feline heartworm disease. While dogs are … [Read more...]
Possible Eprinomectin toxicity in a calf
Possible Eprinomectin toxicity in a calf Travis May, MS, PhD A two-month-old, 150-pound, Brahman-cross heifer calf was observed with neurologic signs following application of what was believed to be a permethrin-based insecticide. The calf died … [Read more...]
Atypical Mycobacteriosis in a Cat
Atypical Mycobacteriosis in a Cat Erin Edwards, DVM, MS, DACVP Skin samples from a 9-year-old Siamese cat were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station. This cat was reported to clinically … [Read more...]
Mitigating the Risk of Mosquitos: EEE, WEE, and WNV Diagnostic Guidance
Each summer, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) confirms several cases of Eastern Equine Encephalitis (EEE) and West Nile Virus (WNV) in horse populations across the state. Mosquitos play a vital role in the … [Read more...]
Mammary sarcoma diagnosed in a Chihuahua
Mammary sarcoma diagnosed in a Chihuahua Gabriel Gomez DVM, PhD and Cheryl Maguire, DVM A nine-year-old, intact female, Chihuahua dog presented to their veterinarian for a solitary mass on the caudal most left mammary gland. The mass was excised … [Read more...]
MSMA (monosodium methyl arsenate) is Not for Pasture Use
MSMA (monosodium methyl arsenate) is Not for Pasture Use Cat Barr, PhD A cattle owner in eastern Texas noticed several of the 50 weaned calves in his coastal pasture had diarrhea and didn’t seem to want to eat. The pasture had been sprayed with … [Read more...]
A dog skin infection caused by bacteria and a novel fungal pathogen, Trichocladium sp
A dog skin infection caused by bacteria and a novel fungal pathogen, Trichocladium sp. Narayan Paul, DVM, MS, PhD, Amy Swinford, DVM, MS, DACVM, and Julie Piccione, DVM, MS, DACVP A nine-year-old female, spayed dog was presented to a … [Read more...]
Epizootic hemorrhagic disease (EHD) in White-Tailed deer
Epizootic hemorrhagic disease (EHD) in White-Tailed deer By Andrés de la Concha-Bermejillo, DVM, MS, PhD, Pamela Ferro, MS, PhD, and Megan Schroeder, PhD, and Brooke Kehlenbrink* *Fourth year veterinary student Food Animal Track TVMDL … [Read more...]
Anthrax in Horses: Disease Considerations and Insight
Anthrax in Horses: Disease Considerations and Insight Guy Sheppard, DVM and Melanie Landis, DVM Bacillus anthracis is a spore-forming, facultative anaerobic, gram positive rod that is the causative agent of anthrax. Spore formation occurs when … [Read more...]
Anthrax increase in Texas: Texas A&M Veterinary Medical Diagnostic Lab helps identify, track high-consequence diseases in animals
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) plays a vital role in animal disease surveillance efforts, including anthrax. On average, TVMDL diagnoses two to three positive cases of anthrax annually in summer months. Thus far in … [Read more...]
Sodium Ion Toxicosis in Cattle
Sodium Ion Toxicosis in Cattle Travis Mays, Analytical Chemistry Section Head Approximately 40 head of Hereford cows were grazing on 12 sections of land with oil production activity present. In one particular section, four to five cows were found … [Read more...]
Edwards co-authors article over third eyelid follicular choristoma in parrot
Erin Edwards, DVM, MS, DACVP, veterinary pathologist in College Station, co-authored an article that was published in the July issue of the Journal of the American Veterinary Medical Association (JAVMA). This article describes a case report of a … [Read more...]
Factors involved in a Bovine Respiratory Disease Complex (BRDC) diagnosis
Factors involved in a Bovine Respiratory Disease Complex (BRDC) diagnosis By Guy Sheppard, DVM The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) frequently works on Bovine Respiratory Disease (BRD) cases. Multiple factors lead to … [Read more...]
Meningeal Worm (Parelaphostrongylus tenuis) in a Sitatunga
Meningeal Worm (Parelaphostrongylus tenuis) in a Sitatunga Terry Hensley, MS, DVM and Gabriel Gomez, DVM, PhD A less than one-year-old, 48 lb. female sitatunga (Tragelaphus spekii) in fair to poor body condition was submitted to the Texas A&M … [Read more...]
Cat Diagnosed with Feline Asthma
Cat Diagnosed with Feline Asthma Judith Akins, DVM, MS A seven-year-old male, neutered, domestic short haired (DSH) cat was presented to a veterinarian for evaluation of chronic coughing and increased respiration of several months’ duration. A … [Read more...]
Malignant Catarrhal Fever in a 1-Year-Old Heifer
Malignant Catarrhal Fever in a 1-Year-Old Heifer R. Gayman Helman, DVM, PhD, MA, Guy Sheppard, DVM, and Megan Schroeder, PhD A 1-year-old heifer became weak and went off by herself in mid-April. The heifer was examined by the submitting … [Read more...]
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