One of the important factors for improving any breed of farm animals is line breeding
and interline crosses.
"The first would be those who advocate results are driven by undoubted formula, line breeding
, dosage points and alike, and the second those who believe it is complete luck.
dog population - and a breed so artificially created through line breeding
, or systematized inbreeding, as to have no resemblance to street dogs anywhere.
Incidentally, one of the reasons why such abnormalities occur in pedigrees is because of the unsavoury practice of line breeding
when a pup is mated back with its parent to retain characteristics that are deemed desirable (often dictated by current fashion).
Methods include line breeding
, where siblings are mated to accentuate desirable characteristics - a practice banned in many countries.
The commercially exploitable yield advantage of hybrids will also depend on the rate of progress in line breeding
and the time-scale for the development of hybrid vs.