Pinkeye in cattle is also known as Infectious Bovine Keratoconjuctivitis (IBK). The longer name accurately describes the fact that the conjunctivae and cornea of the eye are the tissues most often affected by this condition. Signs displayed by … [Read more...] about Pinkeye in cattle
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Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023
Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023 Carlos Rodriguez, Epidemiology and Informatics Manager The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) offers a variety of testing to assist in working up … [Read more...] about Summary of Calf Diarrhea Multiplex Results from Texas Cattle, 2019-2023
Determining the cause of diarrhea in pre-weaning calves
Determining the cause of diarrhea in pre-weaning calves Alexis Thompson, DVM, PhD Pre-weaning calf diarrhea is a common concern in the beef and dairy industry and the cause may be difficult to determine. This is due to the multifactorial nature … [Read more...] about Determining the cause of diarrhea in pre-weaning calves
TVMDL adds new testing for Neospora caninum and Toxoplasma gondii
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is pleased to offer two new ELISA tests to detect antibodies against Neospora caninum and Toxoplasma gondii in multiple species. Both tests offer improvements over the existing … [Read more...] about TVMDL adds new testing for Neospora caninum and Toxoplasma gondii
Historical overview of anthrax in Texas’ livestock population (1974-2022)
Historical overview of anthrax in Texas’ livestock population (1974-2022) Narayan Paul, DVM, MS, PhD, ACVM Anthrax is caused by a gram positive, rod-shaped bacteria called Bacillus anthracis. This is a spore forming bacteria that can persist in … [Read more...] about Historical overview of anthrax in Texas’ livestock population (1974-2022)
Thompson joins TVMDL Canyon as veterinary diagnostician
Alexis Thompson, DVM, PhD, joined the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Canyon as the laboratory’s bovine veterinary diagnostician on July 10. Thompson graduated from the University of Kentucky with a bachelor’s … [Read more...] about Thompson joins TVMDL Canyon as veterinary diagnostician
Juvenile lymphoma in an Angus calf
Juvenile lymphoma in an Angus Calf Julie Piccione, DVM, MS, DACVP and Jessie Monday, DVM, MS, DACVPM A veterinarian was called to examine a 5-month-old Angus calf due to weight loss and lethargy. On physical examination the calf had a temperature … [Read more...] about Juvenile lymphoma in an Angus calf
TVMDL retires Bunyavirus and Cache Valley Virus PCR
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has retired the Bunyavirus and Cache Valley Virus PCR due to a decline in test requests. Clients interested in an alternative test option may consider TVMDL's Cache Valley … [Read more...] about TVMDL retires Bunyavirus and Cache Valley Virus PCR
Arnold contributes to evaluation of Salmonella prevalence in feeder cattle
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
Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf
Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf Kiana Jessie, BS, HT (ASCP); Pam Ferro, MS, PhD; Gabriel Gomez, DVM, PhD, DACVP Tissue samples from a three-week old, Charolais mix, male intact … [Read more...] about Neurologic Disease due to Bovine Herpesvirus-5 (BHV-5) Infection in a 3-week-old Charolais mix calf
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
TVMDL retires Ammonia (Distilation)
Starting December 30, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) will no longer offer Ammonia (Distilation). Requests for this test have remained consistently low the past two years. As an alternative, clients interested in … [Read more...] about TVMDL retires Ammonia (Distilation)
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
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
TVMDL upgrades strychnine test; Testing now offered for serum samples
The Texas A&M Veterinary Medical Diagnostic Laboratory’s (TVMDL) analytical chemistry section recently upgraded its strychnine test. Changes made include detection of strychnine using LC/MS instead of HPLC and detection of strychnine in … [Read more...] about TVMDL upgrades strychnine test; Testing now offered for serum samples