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Can Vet J. Jul 1993; 34(7): 407–412.
PMCID: PMC1686489

Evaluation of methods for dehydration of bovine colostrum for total replacement of normal colostrum in calves


Different methods for the dry preservation of colostrum to be used as a total replacement for bovine colostrum were evaluated. Pooled colostrum from the first and second postpartum milkings from multiparous dairy cows containing immunoglobulin in excess of 40 g/L was freeze-dried, microwave vacuum evaporated, and spray-dried. Spray-drying produced a dried colostrum in which immunoglobulin quantity and function were preserved and was the most cost-effective. Other dehydration methods, although effectively conserving immunoglobulins, were too slow and costly to be used to produce a bovine colostrum replacer. Newborn, colostrum-deprived, dairy calves fed spray-dried colostrum containing 126 grams of immunoglobulin reconstituted in three liters of water as their sole source of immunoglobulin achieved normal mean serum immunoglobulin concentrations. Spray-dried colostrum with high concentrations of immunoglobulin may be produced economically and used as an effective and convenient colostrum replacer in newborn calves.

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Selected References

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