First 21™

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Product Details

Key Ingredients:  IgG, Plasma, IgY (egg-yolk antibodies), and direct-fed microbials (Tri-Mic-WD).

Focus: Protecting calves during the first 3 weeks of life.

Options: Available as a complete milk replacer and supplement.


A unique combination of bioactive feed ingredients designed to assist in bridging the immunity gap during the first 3 weeks of a calf’s life. Available as a complete milk replacer as well as a nutritional supplement to add to pasteurized whole milk or milk replacer. Incorporates three natural sources of antibodies (plasma, egg yolk, and colostrum) to promote gut health and immune support. Supplement: contains 259, 39-gram feedings. 1.2 oz for every calf.

Additional information

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First 21 Complete Milk Replacer, First 21 Supplement