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...]
Rabies in a Sheep
Rabies in a Sheep R. G Helman DVM, PhD DACVP An 8-month-old male sheep was purchased out of state at the end of September. The animal was clinically normal until November 1 when it was noted to be having a seizure. The animal could not stand or … [Read more...]
Optimizing Your Veterinary Diagnostic Laboratory Submission
Optimizing Your Veterinary Diagnostic Laboratory Submission Cheryl Maguire, DVM The mission of the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is to promote animal health and protect agricultural, companion animal and public … [Read more...]
Infectious Coryza in Chickens
Infectious Coryza in Chickens Martin Ficken, DVM, PhD Six 16-week-old male chickens from a flock of 500 birds were presented for necropsy at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Gonzales. History noted one-week of … [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...]
“Hardware Disease” in Backyard Chickens
“Hardware Disease” in Backyard Chickens Martin Ficken, DVM, PhD “Hardware disease” in backyard chickens and other birds is caused by the ingestion of metal objects present in their environment. These objects range from sharp objects that … [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...]
Coccidiosis in Broiler Breeders
Coccidiosis in Broiler Breeders By Gabriel Senties-Cue, MVZ, EPAA, MS, TVMDL Center Resident Director Severe coccidiosis was diagnosed in a 22-week-old, broiler breeder flock. Three dead birds were submitted to the Texas A&M Veterinary … [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...]
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...]
Diagnostic Guidance: Fowl Pox
Diagnostic Guidance: Fowl Pox By Martin Ficken, DVM, PhD Fowl pox is caused by a DNA virus (fowl pox virus). Many species of birds have their own specific pox virus. Infection can occur in two different forms: dry and wet. Dry pox occurs … [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 case of Coccidioidomycosis in a Llama (Lama glama)
A case of Coccidioidomycosis in a Llama (Lama glama) Owais A. Khan DVM PhD DACVM, Will P. Sims DVM, and Gayman R. Helman DVM PhD A variety of fresh and fixed tissues, including lung, liver, kidney, spleen, and mesenteric lymph nodes, from a … [Read more...]
Gangrenous dermatitis discovered in separate broiler flocks
Gangrenous dermatitis discovered in separate broiler flocks Gabriel Senties-Cue, MVZ, EPAA, MS Recently, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Center diagnosed gangrenous dermatitis (GD) in three flocks of broilers … [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...]
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