There are a number of different sources of colostrum. The best choice if the calf won't nurse is to milk out the dam. If that is not an option, maybe some stored colostrum from a cow within your herd is available. The third choice would be colostrum from a neighboring dairy. Finally, there are commercial packages of colostrum. The calf needs to receive the colostrum within 4 to 6 hours of birth because the digestive system is receptive to absorption of the immunoglobulins. Depending on the weight of the calf, give 1.5 to 2 quarts by 6 hours post-birth, and repeat at 12 hours post-birth. Thaw frozen colostrum slowly using a warm-water bath. If colostrum comes from a neighboring dairy, biosecurity can become a concern; make sure you are not introducing an unwanted pathogen.

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