Texas A&M Veterinary Medical Diagnostic Laboratory

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Learn about submitting samples to TVMDL by visiting the TVMDL CWD (IHC) Testing resource page.

cattle

The role of diagnostic testing in establishing bovine vaccination programs

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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

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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

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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

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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

Diagnostic Guidance: Rumen Acidosis (Grain Overload)

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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)

Pyrrolizidine Alkaloid Toxicity in a mature brangus cow

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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

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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

Diagnostic Guidance: Keeping cattle hydrated and healthy

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It's hot and getting hotter. Each summer in Texas, farmers and ranchers are on the gambling side of the weather, hoping for an appropriate level of rainfall. Although most of the state is not currently experiencing drought-like conditions, the Texas … [Read more...] about Diagnostic Guidance: Keeping cattle hydrated and healthy

In-Pouch vs PBS for Trichomonas testing in bulls

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In-Pouch vs PBS for trichomonas testing in bulls Guy Sheppard, DVM Over two years ago, the Texas Animal Health Commission (TAHC) approved the direct smegma sample submitted in PBS solution as an acceptable testing method for Trichomoniasis … [Read more...] about In-Pouch vs PBS for Trichomonas testing in bulls

Malignant Catarrhal Fever in a 1-year-old heifer

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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...] about Malignant Catarrhal Fever in a 1-year-old heifer

Bovine Abortion Caused by Leptospira spp.

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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...] about Bovine Abortion Caused by Leptospira spp.

Blue-green Algae: Keeping Pets and Livestock Safe this Summer

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As summer comes to an end, animal owners should be wary of the potential threat of blue-green algae. Cyanobacteria, also known as blue-green algae, are a phylum of bacteria that produce energy through photosynthesis. These bacteria are often found … [Read more...] about Blue-green Algae: Keeping Pets and Livestock Safe this Summer

Helman and Monday Present at 2019 Bovine Respiratory Disease Symposium and Summer Academy of Veterinary Consultants Meeting

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Dr. Gayman Helman, Amarillo Resident Director, and Dr. Jessie Monday, veterinary diagnostician, recently attended the 2019 Bovine Respiratory Disease Symposium and the summer Academy of Veterinary Consultants (AVC) meetings in Denver, Colorado. The … [Read more...] about Helman and Monday Present at 2019 Bovine Respiratory Disease Symposium and Summer Academy of Veterinary Consultants Meeting

MSMA (monosodium methyl arsenate) is Not for Pasture Use

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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...] about MSMA (monosodium methyl arsenate) is Not for Pasture Use

Factors involved in a Bovine Respiratory Disease Complex (BRDC) diagnosis

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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...] about Factors involved in a Bovine Respiratory Disease Complex (BRDC) diagnosis

Malignant Catarrhal Fever in a 1-Year-Old Heifer

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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...] about Malignant Catarrhal Fever in a 1-Year-Old Heifer

Unusual Manifestation of Papular Stomatitis in a Feedlot Steer

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Unusual Manifestation of Papular Stomatitis in a Feedlot Steer Gayman Helman, DVM, PhD, MA, Will P. Sims, DVM, MS, Gustavo Delhon, PhD A male-castrated, crossbred steer was noted to have a severe and locally extensive skin disease involving the … [Read more...] about Unusual Manifestation of Papular Stomatitis in a Feedlot Steer