To
keep records of your birds genes and parents etc, it is helpful
to follow some sort of program. Below is a simple diagram of line
breeding. You don't have to follow it right down the tree as far
as shown!
The
diagram is based on a single pair of birds, each outside line
(left and right) will give a high percentage of the origional
parent. The sublines will give you the vigour and new characteristics
to breed with but will remain linked to the origional parent.
Line
breeding can normaly be done for about four generations without
loosing too much vigour, then a cross may be done to improve it
again. This can be done by using a cockerel from a subline on the
other side - ie a cockerel mated from the female side to a pullet
on the male side.
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