sager
silkies :
Quote:
What I tried to explain here was THEORETICAL, please read everything to not come to wrong conclusions.
About inbreeding, when a breeder want to "fixate" genes from external breed than must be done close family crosses.
Here I speak about color-gene needed for a coloration that not yet excist in our breed but is present in an other breed.
A too close family cross is brother X sister because in this way all the recessive genes can come to expression immediately (most genes that causes deformations are recessive).
When is done a controlled "line-breeding" father X daughter or mother X son than this is a relative secure way to do inbreeding without the negative effects of close inbreeding.
A breeder that go to create a "new" coloration in his breed set up different line-breeding tribes.
Mostely after the 3th generation "line-breeding" there is done a cross as between 2 different line-breeding birds to break the negative effects but by keeping most selected genes necessary for the creation of that wanted "new" coloration.
Selection breeding is knowing what you are doing, not just putting together a few chickens and hope for a miracle (read mutation). Learn about the color-genes and the hereditary transmission mechanisms before you start with this. Maybe you must look to it this way : we all find it normal that a vet has got a surgical training before he starts operate, he better not start the operation and after get his education.
or i was just curious cause i breed the same way but stop at the 2 generation and bring in new blood to stop deformities that's why i asked i didn't think u could do it for 6

Quote:
What I tried to explain here was THEORETICAL, please read everything to not come to wrong conclusions.
About inbreeding, when a breeder want to "fixate" genes from external breed than must be done close family crosses.
Here I speak about color-gene needed for a coloration that not yet excist in our breed but is present in an other breed.
A too close family cross is brother X sister because in this way all the recessive genes can come to expression immediately (most genes that causes deformations are recessive).
When is done a controlled "line-breeding" father X daughter or mother X son than this is a relative secure way to do inbreeding without the negative effects of close inbreeding.
A breeder that go to create a "new" coloration in his breed set up different line-breeding tribes.
Mostely after the 3th generation "line-breeding" there is done a cross as between 2 different line-breeding birds to break the negative effects but by keeping most selected genes necessary for the creation of that wanted "new" coloration.
Selection breeding is knowing what you are doing, not just putting together a few chickens and hope for a miracle (read mutation). Learn about the color-genes and the hereditary transmission mechanisms before you start with this. Maybe you must look to it this way : we all find it normal that a vet has got a surgical training before he starts operate, he better not start the operation and after get his education.
or i was just curious cause i breed the same way but stop at the 2 generation and bring in new blood to stop deformities that's why i asked i didn't think u could do it for 6
A few simple questions to understand what are your goals :
For what reason you do 2 generations of line breeding ?
After you brought in "new blood" how you breed on after ?
Did you calculate in front the wanted results ?
What you try to acchieve with your breedings ?
When you have the answers on these questions we can go on.