Search results for “toxicology”.
Most livestock species have thicker skin than humans, but it’s still vulnerable to harsh summer conditions. Sun exposure, bacterial infections and increased activity of parasite-carrying insects can all take a toll on livestock skin. Each year, the Texas A&M Veterinary Medical Diagnostic Laboratory, TVMDL, receives samples that reveal how sweltering summers affect livestock health. It’s…
Serving Texas, and beyond, for nearly six decades At the urging of the Texas livestock industry, legislators created TVMDL during the regular session of the 60th Legislature, in 1967. In 1969, the College Station facility formally opened its doors. Six years later, to better serve the Texas feedlot industry, TVMDL opened the Amarillo facility. In…
Measurement of anticoagulant rodenticides by liquid chromatography/mass spectrometry. Targets include warfarin, bromadiolone, brodifacoum, diphacinone, chlorophacinone, coumatetralyl, difenacoum, difethialone, coumachlor, and dicoumarol.
Measurement of arsenic by inductively-coupled plasma/mass spectrometry. A $11.25 sample preparation fee will be added to tissue and feed specimens.
Detection of arsenic salts by the qualitative Reinsch test. Targets include calcium arsenate, lead arsenate, and lead arsenate.
Two hundred and forty straight stocker cattle were on a wheat and grass pasture with access to old barns filled with moldy hay, chemicals, fertilizers, and other substances. Six percent of the animals reportedly died within a 24-hour period. Two 7-month-old calves were necropsied on site and were noted to have melting abdominal fat, hemorrhage…
Measurement of avermectins, including abamectin, doramectin, eprinomectin, ivermectin, moxidectin and selamectin, by liquid chromatography/mass spectrometry.
Identification of toxic blister beetles by microscopic examination.
Beetles found in a new batch of alfalfa hay were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for identification. TVMDL’s toxicology section can identify toxic and non-toxic beetles using microscopic examination. The beetles submitted were identified as Tiger beetles (Cicindelidae sp.) (Figure 1). Tiger beetles are characterized by having large, carnivorous mouth parts…
Blue-green algae, or cyanobacteria, are bacteria capable of photosynthesis. They play a crucial role in the nitrogen cycle by converting atmospheric nitrogen into a form usable by plants and other organisms. However, under certain conditions, such as warm temperatures and high nutrient levels (phosphorus and nitrogen), cyanobacteria can proliferate rapidly, leading to harmful algal blooms.…