Coffee Senna Poisoning in Cattle By Travis Mays, Analytical Chemistry Section Head Approximately 200 head of cattle were grazing on improved native Bermuda grass pastures in the Colorado River bottom. Vegetation also included a large number of … [Read more...]
Unusual Manifestation of Papular Stomatitis in a Feedlot Steer
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...]
Nitrate Poisoning in Cattle
Nitrate Poisoning in Cattle By Travis Mays, Analytical Chemistry Section Head Recently, seventeen cows died within twenty-four hours after consuming new hay. All of the cows died within 100 yards of the hay. A sample of the hay, along with tissue … [Read more...]
Coffee senna linked to cattle deaths in Texas
Coffee senna linked to cattle deaths in Texas By Guy Sheppard, DVM and Cat Barr, PhD Since the onset of winter, the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has seen quite a few cases of intoxication in cattle that have … [Read more...]
Chlorinated hydrocarbon and arsenic poisoning in cattle
Chlorinated hydrocarbon and arsenic poisoning in cattle By Travis Mays, Analytical Chemistry Section Head A herd of 14, six-month-old crossbred cattle was turned out into a new pasture. Within five days, five head died suddenly. An old barn with … [Read more...]
Melanocytic Tumors in Cattle
Melanocytic Tumors in Cattle By Will Sims, DVM A biopsy from a 7-month-old cross breed bovine steer with a large mass was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in Amarillo. The mass had been surgically … [Read more...]
Cattle Nutritional Decline in the Winter
Cattle Nutritional Decline in the Winter By Guy Sheppard, DVM In early December, livestock submitted for necropsy at the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) in College Station demonstrated various signs of declining … [Read more...]
Bacillary hemoglobinuria in a cow
Bacillary hemoglobinuria in a cow By Andrés de la Concha-Bermejillo, DVM, MS, PhD The carcass of a female, 913 pound, 7-year-old Angus cow was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for necropsy. History … [Read more...]
Bovine Influenza D Virus (qPCR) added to TVMDL test catalog
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) recently added a qPCR for Bovine Influenza D Virus to its catalog of tests. As interest in this pathogen increases across the United States, TVMDL is pleased to offer this test to … [Read more...]
Making the case for liver sampling: Why liver biopsies are better for detecting copper deficiencies
Making the case for liver sampling: Why liver biopsies are better for detecting copper deficiencies By Cat Barr, PhD, DABT Copper deficiency has historically been problematic in Texas cattle herds with red-haired, black cows being the least of … [Read more...]
Nitrate toxicity in a herd of cattle
Nitrate toxicity in a herd of cattle By Will Sims, DVM, MS A producer reported a sudden death loss of six head of cattle. Two of the animals were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for necropsy to … [Read more...]
Burn-pile leads to arsenic poisoning
Burn-pile leads to arsenic poisoning By Cat Barr, PhD Fifteen crossbred calves were placed in a pasture with a burn-pile. The day after they were provided with Johnson grass hay, one calf was found dead. Two days later, three calves were walking … [Read more...]
Blackleg (Clostridial myositis) in cattle
Blackleg (Clostridial myositis) in cattle By Jay Hoffman, DVM, PhD With over 800,000 tests run annually, TVMDL encounters many challenging cases. Our case study series will highlight these interesting cases to increase awareness among veterinary … [Read more...]
Cattle herds recently diagnosed with Johne’s Disease
Cattle herds recently diagnosed with Johne's Disease By Guy Sheppard, DVM With over 800,000 tests run annually, TVMDL encounters many challenging cases. Our case study series will highlight these interesting cases to increase awareness among … [Read more...]
Salmonella Dublin (ELISA) recently added to TVMDL test catalog
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is pleased to announce the addition of Salmonella Dublin (ELISA) to our test catalog. This test will complement routine bacteriological culture testing. In addition, the Salmonella … [Read more...]
Evaluate the effectiveness of your cattle vaccination program using TVMDL tests
Vaccination programs are integral to the overall health and profitability of a cattle operation. Without vaccinations, diseases such as Bovine Respiratory Disease (BRD) and Bovine Viral Diarrhea (BVD) can decimate a cattle herd. The Texas A&M … [Read more...]
TVMDL’s BVD pooled PCR ear notch test helps ranch in Texas Panhandle
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) offers a range of tests to detect Bovine Viral Diarrhea (BVD) virus. Two TVMDL Veterinary Diagnosticians are helping one Texas ranch detect the source of BVD using a newer test … [Read more...]
TVMDL adds Ruminant Energy Profile and Ruminant Electrolyte and Macromineral Profile to catalog of tests
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) has expanded its profiles for bovine-specific cases. TVMDL is pleased to add Ruminant Energy Profile and Ruminant Electrolyte and Macromineral Profile to our test … [Read more...]
TVMDL adds four bovine panels to test catalog
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is pleased to offer additional panels to benefit bovine clients. TVMDL now offers the following panels: Bovine Adult Diarrhea/ Weight Loss Panel, Comprehensive Calf Diarrhea Panel, … [Read more...]
TVMDL adds Comprehensive Calf Diarrhea Panel and Bovine Adult Diarrhea/Weight Loss Panel to test catalog
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) is pleased to announce the addition of Comprehensive Calf Diarrhea Panel and Bovine Adult Diarrhea/Weight Loss Panel to our catalog of tests. TVMDL compiled diagnostic panels to … [Read more...]
TVMDL hosts Bovine Respiratory Disease Seminar
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) brought together bovine practitioners, livestock owners, disease researchers and diagnosticians for a comprehensive seminar on the “Recent Advances in Understanding the Bovine … [Read more...]
TVMDL Amarillo Resident Director Dr. Helman discusses managing cattle, equine abortions
On Friday, May 13, R. Gayman Helman, DVM, PhD, MA, resident director of the Amarillo location of the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) joined the weekly Amarillo-area radio show, KGNC-710 Golden Spread AgriBusiness … [Read more...]
Suggested testing for Bovine Viral Diarrhea PI cattle
Recently, TVMDL clients have submitted herd testing for cattle persistently infected (PI) with Bovine Viral Diarrhea (BVD) using TVMDL’s immunohistochemistry (IHC) ear notch test, which costs $20.00 a specimen. While we are looking into possibly … [Read more...]
Trich-onomics
(originally published on Drovers Cattle Network) By John Maday, Editor, Bovine Veterinarian When a third or more of a rancher’s cows turn up open, which can happen when trichomoniasis, or trich, infects a herd, the rancher obviously takes a … [Read more...]
Neospora common cause of fetal death and abortion in cattle in Texas
The Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) performs fetal necropsies on a variety of species in order to determine cause of death and cause of abortion. For beef and dairy cattle raisers, this process is key to help prevent … [Read more...]
