Colostrum management is the single most important management factor in determining calf
health and survival. Unfortunately, a significant proportion of North American dairy calves …

Neonatal calf diarrhoea remains the most common cause of morbidity and mortality in
preweaned dairy calves worldwide. This complex disease can be triggered by both …

The immunoprotective properties of bovine milk immunoglobulin G (IgG) have led to a recent
proliferation of nutritional products incorporating this protein. It has therefore become critical …

Objective—To determine sensitivity and specificity of 4 methods to assess colostral IgG
concentration in dairy cows and determine the optimal cutpoint for each method. Design …

Background Immune protection in newborn calves relies on a combination of the timing,
volume and quality of colostrum consumed by the calf after birth. Poor quality colostrum with …

Background Estimation of the quantity of colostral IgG or serum IgG absorbed following
ingestion of colostrum by calves is essential for monitoring the effectiveness of colostrum …

Escherichia coli is a normal inhabitant of the gastrointestinal (GI) tract of warm-blooded
animals and ubiquitous in the farm environment. Disease caused by E. coli in calves may …

Background: Confirmatory tests for failure of transfer of passive immunity (FTPI) in dairy
calves require direct measurements of the serum immunoglobulin G concentration. Enzyme …

Background Brix refractometry can be used to assess colostral immunoglobulin G (IgG)
concentration, but studies identifying Brix percentages to detect high‐and low‐IgG colostrum …

highly virulent strains of E. coli cause septicemia. Affected calves usually are less than 7
days of age and may be less than 24 hours old. Although often present early on, fever is …