Search results for “bovine viral diarrhea”.
TVMDL offers a range of tests to detect bovine viral diarrhea virus (BVDV). BVDV threatens the global cattle industry and negatively impacts producers in the form of decreased or lost productivity. Despite vaccines and an array of diagnostic tests, this expensive disease continues to impact cattle producers. About 70 to 90% of all infections go…
In this article: Bovine abortion often leads to significant biological and economic consequences for cattle operations. With today’s high cattle values and the increasing cost of replacement heifers, these losses can quickly become financially devastating. Pregnancy loss may also indicate underlying infectious disease, which can affect the entire health of a herd. For these reasons, prompt investigation…
A veterinarian was called in to investigate the cause of abortion in a group of 60 well-managed 2-year-old brangus heifers. Four heifers aborted before the investigation was initiated. The herd is closed with a reportedly good biosecurity program and good nutrition. All of the animals are well-vaccinated. A fresh mid-term female fetus and fetal tissues…
Tissue from a cross-bred bovine fetus in the third trimester of gestation was submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) to investigate the cause of abortion. According to the history provided by the submitting veterinarian, this animal was the second of two full term fetuses that had been born dead in the…
TVMDL has compiled syndrome specific diagnostic plans to assist clients in efficient diagnostic testing strategies based on clinical signs or gross necropsy findings. The client still has the ability to select the tests within the diagnostic plans that fit with the diagnostic goals and pre-test clinical suspicion of each case. Simply select the syndrome most…
Ten live 20-day-old, meat type chickens were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory’s (TVMDL) Center laboratory with a clinical history of leg problems and swollen tendons. At necropsy examination the birds exhibited outwardly deviated legs, moderately swollen hocks with an accumulation of a tannish, turbid exudate, and swollen gastrocnemius tendons. Serology for…
Bovine thrombotic meningoencephalitis (TEM), formerly known as thromboembolic meningoencephalitis (TEME), is a neurological disease, primarily of feedlot cattle between the ages of 6 to 12 months. The condition is caused by Histophilus somni (previously known as Haemophilus somnus), a Gram-negative opportunistic bacterium that can be cultured very commonly from the respiratory and reproductive tracts of normal cattle. Calves…
An adult angus bull was presented to a veterinarian for lethargy and weakness. The bull died shortly after blood collection. Blood and tissue samples were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL). The complete blood count revealed a marked leukocytosis characterized by a lymphocytosis at 43,000 lymphocytes/µL (reference interval 1,800 – 9,000…
A viral-induced Shope fibroma was diagnosed cytologically in an adult domestic rabbit with several subcutaneous masses. Shope (rabbit) fibroma virus is spread by biting arthropods and can result in the formation of single or multiple tumors in wild and domestic rabbits. Cytologically, these tumors can appear markedly atypical, mimicking a malignant neoplasm. Thorough clinical history…
Tissue samples from a three-week old, Charolais mix, male intact calf were submitted to the Texas A&M Veterinary Medical Diagnostic Laboratory (TVMDL) for testing. According to the submitting veterinarian, the animal exhibited acute, non-specific neurological deficits that progressed rapidly. No information was provided regarding whether this animal died naturally or by euthanasia. Tests requested by…