242 



PRACTICAL POULTRY PRODUCTION 



It is most extensively found on commercial duck farms 

 that make a specialty of producing "green" ducks, that is, 

 ducklings which are grown rapidly and marketed when 

 from 8 to 12 weeks old and weigh from 43^ to 6 pounds apiece. 

 The White Pekin is the only variety of this breed, it 

 having a yellow skin, and white or creamy-white plumage. 



Figure 234. — Pekin drake and duck. 



The standard weights for Pekin ducks are: Adult drake 9 lbs., 

 young drake 8 lbs., adult duck 8 lbs., young duck 7 lbs. 



Aylesbury. This breed which is likewise white in color 

 is quite similar to the Pekin, the standard weights of both 

 of these breeds being identical. This breed, which is a 

 native of England, is quite popular in that country as a 

 producer of duck meat. 



Muscovy. The Muscovy is found more on general farms 

 than on commercial duck farms, owing to the fact that they 

 are not so well suited to highly intensive conditions or to 



