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That may depend on how specific you wish to be and how much effort you're willing to put into it. Have you tried using https://cryptokittydex.com for genetics research? With it, I worked out pretty quickly that a chicken requires a 9 on its first gene (i.e. the one on the far right) and a 7 on its 40th gene.

I have taken a look yes and I'm also part of the discord where there is gene discussion so people are passing out the info a little more freely thankfully!