Crossbreeding in Swine Does It Offer An Effective Method for the Improvement O
Crossbreeding in Swine Does It Offer An Effective Method for the Improvement O
W E William Ernest Carroll
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The extensive application of crossbreed- ing to commercial swine production in Denmark during many years is frequently cited as evidence of its value. However, such cross- breeding was first undertaken, not to produce pigs that would make more rapid and economical gains, but to improve the carcass qualities of the Danish hog, the Landrace. This hog did not then produce a 130 BULLETIN No. 489 [July, carcass that met the exacting requirements of the British market, the principal market for Danish... bacon. Beginning about 1895 the Danes imported Large Yorkshire hogs and began an elaborate government-subsidized swine-breeding program to improve the type of carcass they were producing for export. The aim of the program was to introduce into the Landrace breed the superior carcass qualities of the Yorkshire and yet to retain the hardi- ness and fecundity of the Landrace hogs. After this aim was ac- complished the Yorkshires were to be eliminated and crossbreeding discontinued. (See Reference 2 on page 136 herewith.
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