The sex-linked slow-feathering gene can be used for crosses where the sex of the chicks can be determined at hatching time by the length of the wing feathers. Chicks of an unwanted sex are killed almost immediately to reduce costs to the breeder. Department of Agriculture, Fisheries and Forestry Queensland. Some are effective only with certain breeds or crosses, while others are universal. Different segments of the poultry industry sex chickens for various reasons. In farms that produce eggs, males are unwanted; for meat production, separate male and female lines for breeding are maintained to produce the hybrid birds that are sold for the table, and chicks of the wrong sex in either line are unwanted.
Adrienne. Age: 28.
Instrument or machine sexing of chickens has almost disappeared, because the instruments are no longer available and spare parts cannot be obtained.
Arden. Age: 23.
At that time, their secondary sex characteristics begin to appear, making it possible for anyone with a minimal amount of training to sex a chicken. Chicks of an unwanted sex are killed almost immediately to reduce costs to the breeder. A cross between a fast-feathering male and a slow-feathering female results in offspring where the female chicks have primary wing feathers that are significantly longer than the coverts.