The cross of a Large White boar with a sow of the traditional Jutland breed was found to be particularly successful.

[3]: 587  A herd-book published in 1906 listed 126 boars born from 1893 to 1904;[3]: 587  some 60% of them were from Jutland, 21% from Fyn and 10% from Zealand.

From about 1925 the use of Large White boars was reduced, and the new breed selectively bred for characteristics including more length in the body and less fat on the back.

[3]: 587 [5]: 404 In the 1960s it was essentially the only pig breed in the country, but in the 1970s it came to be considered insufficiently productive for intensive farming.

[3]: 587  A comparison with imported Large White in 1977 found it to grow more slowly while consuming more feed.