keblow
Chirping
This was based on studies. You can find them in Genetics of the Fowl, written by Hutt, I believe. Extraordinary circumstances exist, but as a general rule they found a new cock's sperm to override by 10 days. Wait longer if you wish, because as you can see, the exception proves the rule.
ETA: I read through the thread you posted about the LO and RLW parentage, and that does confirm Hutt's findings that rose combed sperm doesn't compete well with single comb sperm.
ETA: I read through the thread you posted about the LO and RLW parentage, and that does confirm Hutt's findings that rose combed sperm doesn't compete well with single comb sperm.
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