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A Study in Herd Expansion

Department of Dairy Husbandry, University of Kentucky, Lexington, Kentucky

ABSTRACT

Recently we have had the privilege of studying records of a herd of dairy cattle that was established in 1896, twenty-seven years ago. To found the herd 14 nice cows were purchased and ever since then the best heifer calves have been retained to enlarge and improve the herd.

Like every other herd, this one has been visited by its quota of abortions, tuberculosis, accidents and defectives, but it has received unusually good attention, care, feed and stabling. We believe its rate of expansion, or growth, will prove interesting to breeders of cattle. A review of this herd is as follows:

1896—Herd founded with 14 cows.

1912—The herd in 1912 contained 29 female descendents of the 14 cows. Eleven of the 14 foundation cows failed to produce enough offspring, particularly heifers, to breed on and disappeared from the herd in the sixteen years, while 3 prolific cows are responsible for the herd growth.