Our results might be a direct consequence of more claw and limb disorders in heavy breeds.
Because traditional heavy strains (e.g., White Sussex or Cornish game) are fixed for the high-growth alleles, this suggests that they were present in heavy breeds used to found modern broilers.
The results suggest that the selection of the high-growth haplotype predates the development of heavy breeds for meat production (77), and is not a result of recent genetic selection.
The heavy breeds lay fewer eggs while the light and medium lay more and are more practical to keep.
Heavy breeds such as the Muscovy and other meat production breeds will usually have a ratio of one drake to five ducks maximum.
But there's another side to the city that has nothing to do with tubesteaks of any sort, one that's centered around a different bass-heavy breed of club music called "footwork".
The heaviest breed did not show the highest rate of foaling difficulties.
Indeed these reached 9.0% in the most unfavourable case, that is, breed A, but only 6.7% in the heaviest breed P.
The results could also have been different in heavier breeds known to be predisposed to symmetrical onychomadesis such as Rhodesian ridgeback and giant schnauzers.
