The American classification encompasses a wide range of percentages for does and bucks. The American Purebred genetics are used in many different applications and environments. Commercial producers use Boer bucks to improve the carcass and growth capacity of their native goat herds. Other producers use the American Purebred genetics as methods to infuse improved traits into their herds. The American herdbook is group into two classifications by percentage of the individual animal. This grouping or classification determines the level, award program and sanctioned show eligibility for the animal.  The percentage group applies to does and bucks under the following:  Does between 50 percent up to 93.6 percent are eligible for a percentage registration Does from the percentage classification are eligible to produce registered offspring. Does between 50 percent up to 93.6 percent are eligible to show in percentage classes under the ABGA sanctioned show program. Bucks between 50 percent up to 96.7 are eligible for a record of pedigree. Bucks between 50 percent up to 96.7 can not produce registered offspring. Bucks between 50 percent up to 96.7 can not show under the ABGA sanctioned show program.