Colostrum Supplements vs Replacers

You may have noticed several new choices along with the calf colostrum supplements you’ve used in the past. With 100 grams bovine globulin protein (IgG) or more per serving, this new generation of colostrum replacement products offers twice the IgG of traditional colostrum supplements. Colostrum replacers are meant to take the place of maternal colostrum, whereas traditional colostrum supplements may not provide optimum IgG unless used as a supplement to maternal colostrum. The easiest way to differentiate between the two is to look closely at the product’s name, or check the IgG content on the label. However, it’s the difference in price that may first catch your eye, since replacement products cost 2-3x more than traditional supplements. For the most part, replacers don’t require that you feed more volume to achieve the higher IgG, which can make them well worth the expense.

Research presented at the American Association of Bovine Practitioners annual meeting explains the need for colostrum products with 100 grams IgG or more: Within the first 24 hours of life, it’s important that a calf receives enough colostrum to achieve successful passive transfer of immunity from disease. This can come in the form of maternal colostrum, a combination of maternal colostrum along with a colostrum supplement, or with the use of a newer 100+ IgG colostrum replacement product. Research has shown that calves receiving a minimum of 100 grams IgG if nipple fed, or 150 grams IgG if tube fed, are most likely to achieve successful passive transfer of immunity. Calves that fail to achieve passive transfer are susceptible to death, disease, low weight gain and delayed calving.

Adequate colostrum within the first hours of life sets the foundation for a calf’s ability to survive and thrive. Lori H

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