A strong correlation was found between Brix measurements and IgG content in colostrum and serum samples. For this aim, correlation analysis was performed between Brix results and ELISA-IgG determination from colostrum and serum samples. Therefore, the objective of this study was to evaluate the utility of a simple and rapid tool such as a digital Brix refractometer to estimate colostrum quality and for predicting the success of passive transfer of immunoglobulin G (IgG) in Buffalo calves. Despite the relevance of Buffaloes ( Bubalus Bubalis) in world dairy production, the available knowledge regarding colostrum quality management remains scarce for this species. Neonatal calf depends on the timely supply of high-quality colostrum to prevent the failure of passive transfer of immunoglobulins (Ig), which has been linked to increased risk of different diseases and mortality in early stages of life. The protective effects of colostrum in relation to the incidence and severity of newborn ruminant diseases are well established.
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