Is it bad to breed a brother and a sister?

The Classroom @ The Coop: genetics archive: Is it bad to breed a brother and a sister?
By ChickenMAN on Saturday, October 2, 1999 - 11:15 am:

I am recieving chicks in the mail in a few days. I am getting Barred Plymouth Rocks. I would like to hatch my own eggs in the future.I am wondering if it would be safe if I bred a brother to a sister.Would the offspring be normal and free of deformities?
chickenMAN

By Cjeanr on Saturday, October 2, 1999 - 06:30 pm:

Are you receiving your chicks from a hatchery? Chances are slim that they are brothers and sisters, since they are "flock" bred. But if they are, you will never know it. I do it in rare instances, but then breed out to a different line the next generation. This is to obtain dominance of a particular good feature. If laying is the strong point of your breeding stock, it can't hurt a thing. CJR

By ChickenMAN on Tuesday, October 12, 1999 - 05:47 pm:

Thanks a lot CJR. that really helps!

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