Growth and development with special reference to domestic animals XIV: Measurements of growing Holstein and Jersey cattle on Missouri farms
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The principal purpose of this paper is to present data on growth in weight and certain linear dimensions of the Holstein and Jersey breeds of cattle with the hope of establishing upper and lower limits between which normal animals of these breeds may be expected to vary. A second purpose is to investigate the possibility of using body size as a supplement to, or to entirely replace, age as a guide to the proper time for breeding dairy animals. If a method could be developed for judging with greater accuracy the earliest time at which an animal could be bred without materially retarding subsequent growth, then evidently much economic advantage would be gained thereby.