x2!!
Exactly what I was trying to say so many times yesterday (on another thread) and I got absolutely nowhere.
I completely agree. I don't see where a bad breeding could happen with a breeding inside a trio that came from excellent lines though - so if you'd care to expound on that I would be very appreciative.
[Edited to add] I thought about what you said regarding "even with a trio"...do you mean breeding that trio and then not knowing which chicks from that breeding were culls and which were not, and keeping the wrong ones to continue your program with...due to being inexperienced or being experienced and not caring (or anything in between)? That makes sense...(to me anyway) but again I'm noob so I don't know for sure.
thanks in advance for any clarification.
[Editing again] The more I think about that the more I think wow.

I'm sure that happens all the time. Breeder B buys a trio from Breeder A, and breeds only that trio. But, they hatch a few chicks and one of them is a cull according to Breeder A's standards, but breeder B doesn't realize that (or does, but doesn't care) and places that potential cull from Breeder A's birds into their breeding program. That cull is **
not** from the lines of Breeder A, because Breeder A would have selectively culled that particular chick and it would not have been in their breeding program.
Line (lineage) -
- Lineal descent from an ancestor; ancestry or pedigree.
- A sequence of species each of which is considered to have evolved from its predecessor: "the chimpanzee and gorilla lineages".
It would stand to reason that Breeder B's chick from Breeder A's trio is no longer Breeder A's line, because there would be no descent from that chick if Breeder A would have hatched it, because it would have been a cull.
I now think that a line stops the moment Breeder A transfers ownership of those birds or hatching eggs to Breeder B.....I think...not sure....I don't know.