- When created, the White Jersey Giant was the result of merging the genetics of several large breeds. This breed grows slowly but eventually are a third larger than most other heavy breeds. This breed has an impressive hen that lays about 240 extra-large eggs annually. When younger, the birds will mature relatively quick, but tend to reach marketable meat weight slower than other breeds. Approx. 240 X-Large Eggs/Year | Egg Color: Brown | Mature Wt: Male 11 lbs. Female 9 lbs.