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A Modification of the Haecker and Savage Feeding Standards for Dairy Cattle

Dairy Husbandry Section, Iowa State College, Ames, Iowa

ABSTRACT

The feeding standards have now come to be recognized as valuable adjuncts to the teaching of the principles of feeding and as criteria by which rational feeding methods can be outlined. However, consideration must be given to the fact that no feeding standard can ever be looked on as determining definitely the amounts of nutrients that must be supplied to certain animals, for the simple reason that the individuality of an animal is a very variable factor and at the same time is the chief one in determining the feed requirements of the animal. In addition there are certain factors in nutrition, such as the variations in the quality of the proteins; the occurrence and distribution of the "vitamines," and the requirements of the animals for ash, that are not considered in feeding standards. In spite of these drawbacks the feeding standards are of great value and have come to stay.