Principles of Diagnostic Testing Series Part 2 – Test Characteristics: Infectious Disease Antigen and Antibody Testing Some of the most common diagnostic tests for infectious diseases detect either antigens or antibodies. An antigen is a foreign substance that elicits an … Continue reading →

Principles of Diagnostic Testing Series Part 1 – Test Characteristics: Sensitivity and Specificity The performance characteristics of a diagnostic test influence the circumstances that the test is most useful and how the results might be interpreted. Ideally, every diagnostic test … Continue reading →

Part 10: Body Conditioning Score Series: Urea as a protein supplement For most cow-calf producers, forages are the primary component of the cow’s diet, therefore supplements should only be used when they increase the nutritional value of the forage. A common form of … Continue reading →

Part 7: Body Conditioning Score Series: Protein Management  When considering feedstuff selection and ration development, producers often base decisions heavily on protein content of the particular feed or feedstuff in question. For purposes of this article, we will define a … Continue reading →