To make an informed decision about whether two birds are too closely related to breed together or not it is advisable to know the percentage of genes they have that originate from the same source. Although genes from the same ancestors are not necessarily the same genes this table could still be useful as a guide when making breeding decisions.
The chart below shows how the average percentage of genes from the original pair (A & B) are passed down through the generations
If you use a computer program to record your birds it will probably produce a relationship report that will show the relationship between the birds that you are considering for breeding. An example is shown in the chart below. If I was considering pairing Rastus to either Candy or Honey I would click on a relationship report for Rastus and then scroll down to see his relationship to Candy & Honey. As you can see in the chart Candy is related to Rastus in 3 ways. The ratings of these three relationships added together show that 62.5% of their genes have come from the same sources. Rastus & Honey have 12.5% of genes from the same source. An unrelated bird would either not appear in the report at all or only appear as the spouse of a related bird
NOTE: A random one of each pair of genes from each parent is passed down to each of the offspring so the percentage of genes that are the same in the descendants will be different from the total inherited.
interesting charts nev, and it shows the importance of keeping good records so youknow who is related to who.
one thing to point out though is that although siblings get 100% of theri genes from the same source (ie the same parents) that does not mean they have the same genes. as each parent only passes on a copy of half its genes two siblings can actually have quite different genes from each other. i know that may seem obvious but thought it should be mentioned.
Thanks for the feedback Toni. I think I mentioned that some of the inherited genes will be different in the various descendants but as we can't tell how many without genetic testing, which would be too expensive, the next best option is to know the source of the genes
I followed this thread, but did you reply to Lindsey's question on what software U use to record your breeding...
It will be good if you provide some advice...I've only come across "ZooEasy"...any others that may share their experiences of using similar software?
Thanks to all,
I use a family treemaker genealogy program that is designed for humans. It is far more comprehensive than any of the bird programs I have seen. Because I am an avid genealogist I have had a lot of experience using genealogy programs and when I looked at the available bird programs I found their features were very limited and they were not anywhere near as easy to use as the human programs. Some of the newer versions of genealogy programs have features that are not needed for birds so earlier versions might be better
I have customized the program to refer to the birds as cocks & hens and it will produce all the reports that I need. It will produce ancestor charts, descendant trees, kinship reports & parentage reports. Photos of all birds are added to the program and these can be added to trees and reports if required. An unlimited number different partners can be recorded for each bird. You can add as many headings as you like to record features about the birds and there is room to record individual notes as well as notes for each pairing. The report I use most is one that sorts the birds by cage number, if a bird is moved to another cage I simply change it's cage number and it shows in it's new cage. When birds are sold they are removed from the current bird report but none of their details are lost so they will still appear in other reports. I enter the chicks as soon as they are born and add other details & photos later.