Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) Client Services Section Head Dr. Ashley Arnold was lead author for a longitudinal evaluation of Salmonella in cattle. Environmental components and the cattle's lymph nodes were evaluated … [Read more...] about Arnold contributes to evaluation of Salmonella prevalence in feeder cattle
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Texas Animal Health Commission updates trichomoniasis testing requirements
On December 27, the Texas Animal Health Commission (TAHC) updated the requirements for the Texas Trichomoniasis Program. Among the updates, TAHC increased the duration of transport time for direct smegma samples shipped in phosphate buffered saline … [Read more...] about Texas Animal Health Commission updates trichomoniasis testing requirements
Pinkeye in cattle
Pinkeye in cattle Guy Sheppard, DVM Infectious Bovine Keratoconjunctivitis (IBK) or pinkeye can be very problematic at times in cattle herds. It is manifested as an inflammation/infection of the cornea and conjunctiva of one or both eyes in … [Read more...] about Pinkeye in cattle
Direct smegma samples now accepted for trichomonas testing at TVMDL’s Canyon lab
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has expanded the Tritrichomonas foetus – Bovine (rtPCR) test offering. Clients interested in testing bovine samples for Tritrichomonas foetus can now submit direct smegma samples to … [Read more...] about Direct smegma samples now accepted for trichomonas testing at TVMDL’s Canyon lab
Diagnostic guidance: Calf diarrhea
This post is from the TVMDL Calf Diarrhea producer handout. Diarrhea is the most prevalent illness in calves during the first 28 days of life. Although diarrheas are discussed as being caused by a single disease entity, most cases of diarrhea are … [Read more...] about Diagnostic guidance: Calf diarrhea
Diagnostic Guidance: Bovine Respiratory Disease (BRD) Complex
This post is from the BRD Complex producer handout. Bovine Respiratory Disease, commonly called “Shipping Fever”, is said to be the most costly disease affecting stocker and feedlot cattle. It is estimated that over $3 billion is spent annually on … [Read more...] about Diagnostic Guidance: Bovine Respiratory Disease (BRD) Complex
Keeping livestock healthy during a Texas winter
Texas winters are infamously fickle. Each year, weather conditions range from mild temperatures with high humidity to record-setting rain, sleet, and sometimes, snow. It’s also not uncommon for Texas to experience these weather conditions throughout … [Read more...] about Keeping livestock healthy during a Texas winter
Best practices for submitting samples for brucellosis testing
Each year, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) performs thousands of tests for brucellosis. To ensure samples are accessioned and tested quickly and accurately, TVMDL recommends the following best … [Read more...] about Best practices for submitting samples for brucellosis testing
Polio Syndrome in Ruminants
Polio Syndrome in Ruminants Guy Sheppard, DVM Polioencephalomalacia “Polio” is a syndrome of ruminant animals affecting the central nervous system. Seizures are the most notable sign, progressing quickly to the death of the affected animal … [Read more...] about Polio Syndrome in Ruminants
Detection of Neospora caninum DNA in a mummified bovine fetus
Detection of Neospora caninum DNA in a mummified bovine fetus Andrés de la Concha-Bermejillo, DVM, MS, PhD, Pam Ferro, PhD, Megan Schroeder, PhD The body of a midterm bovine fetus and the attached placenta were submitted to the Texas A&M … [Read more...] about Detection of Neospora caninum DNA in a mummified bovine fetus
Osteogenesis and dentinogenesis imperfecta in a calf
Osteogenesis and Dentinogenesis Imperfecta in a Calf Randi Gold VMD, PhD, DACVP and Guy Sheppard DVM A 21 day-old calf with a history of multiple leg fractures and no evidence of external injuries was euthanized and sent into the TVMDL for … [Read more...] about Osteogenesis and dentinogenesis imperfecta in a calf
De la Concha presents at 2021 Therio Conference
Earlier this summer, Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) Veterinary Pathologist Andrés de la Concha, DVM, MS, PhD presented at the 2021 Therio Conference in Omaha, Nebraska. The Therio Conference is hosted by the Society … [Read more...] about De la Concha presents at 2021 Therio Conference
Monday discusses recent anthrax cases on Around the Caprock
Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) Veterinary Diagnostician Jessie Monday, DVM, MS was a recent guest on Texas Farm Bureau Radio Network's show Around the Caprock. She discussed two recent anthrax cases TVMDL confirmed in … [Read more...] about Monday discusses recent anthrax cases on Around the Caprock
Photosensitization: Causes and testing options
Photosensitization is a serious skin condition in horses and cattle caused by a hazardous combination of certain plants and ultraviolet (UV) light. Certain plants contain photodynamic agents, which then cause a reaction in the animal’s body that … [Read more...] about Photosensitization: Causes and testing options
Listeriosis in Cattle
Listeriosis in Cattle Guy Sheppard, DVM Since last summer, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has seen a few cases of listeriosis in cattle. Submitting veterinarians have reported profound neurological signs that … [Read more...] about Listeriosis in Cattle
The role of diagnostic testing in establishing bovine vaccination programs
The role of diagnostic testing in establishing bovine vaccination programs Guy Sheppard, DVM Vaccination programs are integral to the overall health and profitability of a cattle operation. Without vaccinations, diseases such as Bovine … [Read more...] about The role of diagnostic testing in establishing bovine vaccination programs
Monday discusses lingering effects of Winter Storm Uri on cattle in the Texas High Plains
Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) Veterinary Diagnostician Jessie Monday, DVM, MS was recently interviewed for the Texas Farm Bureau Radio Network Program "Around the Caprock". She discussed how Winter Storm Uri may … [Read more...] about Monday discusses lingering effects of Winter Storm Uri on cattle in the Texas High Plains
Review the range: Cattle and horse owners encouraged to be aware of potentially toxic plants
Spring is getting closer and summer is not far behind. As the seasons change, it’s important to be aware of the different plants that have grown or been added to your surroundings and their potential toxic effects on cattle and horses. What are … [Read more...] about Review the range: Cattle and horse owners encouraged to be aware of potentially toxic plants
Tracking transboundary and emerging diseases: Newly funded project aims to use Next-Generation Sequencing to detect bovine diseases sooner
Transboundary and emerging diseases are constant threats to the livestock industry. Even as biosafety measures have evolved, there is always the lingering peril of highly contagious or newly discovered diseases impacting animal health. Through a … [Read more...] about Tracking transboundary and emerging diseases: Newly funded project aims to use Next-Generation Sequencing to detect bovine diseases sooner
Cryptosporidiosis in cattle
Cryptosporidiosis in cattle Guy Sheppard, DVM and Gabriel Gomez, DVM, PhD, DACVP A seven-day-old angus bull calf with a history of diarrhea was necropsied by the submitting veterinarian. The small intestine, liver, kidney and the lymph node were … [Read more...] about Cryptosporidiosis in cattle
Diagnostic Guidance: Rumen Acidosis (Grain Overload)
Diagnostic Guidance: Rumen Acidosis (Grain Overload) Guy Sheppard, DVM Grain is certainly an important feedstuff for livestock, but it can also be deadly if not fed correctly. Grains are rich in carbohydrates and provide energy for the animals … [Read more...] about Diagnostic Guidance: Rumen Acidosis (Grain Overload)
Anaplasmosis in cattle
Anaplasmosis in cattle Guy Sheppard, DVM Anaplasmosis is a blood cell parasite of cattle with a worldwide distribution, but the disease is most common in tropical and subtropical areas. Anaplasma marginale is the most common organism involved in … [Read more...] about Anaplasmosis in cattle
Bovine thrombotic meningoncephalitis
Bovine thrombotic meningoncephalitis Guy Sheppard, DVM and Andrés de la Concha-Bermejilla, DVM, MS, PhD Bovine thrombotic meningoencephalitis (TEM), formerly known as thromboembolic meningoencephalitis (TEME), is a neurological disease, primarily … [Read more...] about Bovine thrombotic meningoncephalitis
Pyrrolizidine Alkaloid Toxicity in a mature brangus cow
Pyrrolizidine Alkaloid Toxicity in a mature brangus cow David A. Sher, B.S, Catherine Barr, PhD, Dipl ABT, Gabriel Gomez, DVM, PhD, Dipl ACVP An adult, female, 800 lb., Brangus cow in poor body condition was submitted to the Texas A&M … [Read more...] about Pyrrolizidine Alkaloid Toxicity in a mature brangus cow
Testing Options for Anaplasma marginale in Cattle
Testing Options for Anaplasma marginale in Cattle Melanie T. Landis, DVM, MBA Anaplasma marginale is a rickettsial bacterium that invades the red blood cells (RBCs) of ruminants, primarily cattle, and is considered the most common tick-borne … [Read more...] about Testing Options for Anaplasma marginale in Cattle