The way ducks mate with other birds. In natural marriages, male ducks and betiina are deposited in one place or box-shaped colony, on a traditional breeder of 1 male for 50 females. but the comparison is too loose so that the quality of DOD produced is not good.
To produce a high-powered egg hatchery ratio or per comparison between males and females is 1: 10 or a maximum of 1:20 means a male tail marries approximately 10-15 females. But even better with a ratio of 1:10 then the fertility rate of eggs will reach 90% high.