Chromatophoromas in lacertids By Gaya Balamayooran, DVM, PhD, DACVP and Josué Diaz-Delgado, DVM, MS, PhD, DACVP A 76 gram, 9-year-old female knight anole (Anolis equestris) lizard from a zoological collection was euthanized due to poor prognosis … [Read more...]
Rickets in backyard chickens
Rickets in backyard chickens Gabriel Senties-Cue, MVZ, EPAA, MS Rickets was diagnosed in a live, 3-month-old, backyard type, female chicken. The bird was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Center, … [Read more...]
Cyanobacteria: No winter break this year
Cyanobacteria: No winter break this year By Cat Barr, PhD, DABT Blue-green algae (cyanobacteria) have barely taken a break this winter. The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has already had several positive samples … [Read more...]
Segmental analysis of hair for drug detection in racing horses
Segmental analysis of hair for drug detection in racing horses Travis Mays, MS, PhD The Texas A&M Veterinary Medical Diagnostic Laboratory’s (TVMDL) drug testing laboratory offers a screen for the detection of beta-adrenergic agonist drugs, … [Read more...]
Malignant Catarrhal Fever in a 1-year-old heifer
Malignant Catarrhal Fever in a 1-year-old heifer By R. Gayman Helman, DVM, PhD, Guy Sheppard, DVM, and Meagan Schroeder, PhD A 1-year-old heifer became weak and isolated herself. Three days later, the heifer was examined by the submitting … [Read more...]
Calcinosis Circumscripta
Calcinosis Circumscripta Judith Akins, DVM, MS Slides from an aspirate of a mass on the left elbow of a two-year-old, intact male German Shepherd dog were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for … [Read more...]
Dogs will eat anything, won’t they?
Dogs will eat anything, won’t they? Cat Barr, PhD, DABT Four dogs were brought to a veterinary clinic when one had been seizing for several hours and the other three had begun to tremble. All four dogs had reportedly been running loose in a rural … [Read more...]
Necropsy of rare bovine conjoined twins
Necropsy of rare bovine conjoined twins By Erin Edwards, DVM, MS, DACVP and Gaya Balamayooran, DVM, PhD, DACVP Recently, bovine conjoined twin calves were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). Both the … [Read more...]
Histomoniasis (Blackhead) in birds
Histomoniasis (Blackhead) in birds Martin Ficken, DVM, PhD The causative agent of histomoniasis is a protozoan parasite Histomonas meleagridis. Numerous gallinaceous birds are affected by this parasite including turkeys, chickens, chukar … [Read more...]
Evaluating Apparent Discrepancies in Heartworm Test Results
Evaluating Apparent Discrepancies in Heartworm Test Results Melanie T. Landis, DVM, MBA; Carlos Rodriguez, BS; Mindy Borst, BS, LVT A 10-year-old female dog presented to its veterinarian for routine exam, vaccination and heartworm testing. It was … [Read more...]
Neospora caninum Abortion in Cattle
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...]
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