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Feeding

Fish meal should be introduced into the ration gradually to avoid feed refusal. Since the greatest benefit from feeding fish meal comes during the first half of lactation when protein requirements are highest, it is useful to start adapting the cows to it during the latter part of the dry period.

Fish meal can be fed to milking cows at a rate that supplies up to a maximum of **0 grams (3.5 ounces) of fish oil (fat) per cow per day. Higher levels of fish oil tend to lower fat test. The fat content of fish meal varies among suppliers. Therefore, it is important to know the fat content of the fish meal being used. A practical guideline is to feed it at a rate of up to 1 ½ pounds (0.7 kg) per cow per day.

 Others: Herring, Anchovy, Redfish, and Whitefish meal

Herring and anchovies also are oil-type fish and are processed similarly.

Redfish meal is the filleting waste from ocean perch. Ocean perch are not an oil fish. They are caught for human food off the eastern coast of Canada and the U.S. After the fillets are removed, the heads and racks are ground, cooked and dried to produce redfish meal.

The term whitefish refers to cod, haddock, hake, flounder and pollack. Like ocean perch, these also are caught for human food. After the fillets are removed, the heads and racks are ground, cooked and dried to produce whitefish meal.