I live in a All Ag Distric, Corn, Soybeans, Grapes, Apples, and every Vegetable Imagineable. I Always check the Liver and over 35+ Years of Hunting I have only seen a couple of Livers that did'nt look good.
I would Contac your Local Game Officals and ask there Opinion on this one. I know Deer with many other worse conditions can still be eatin as it (Does'nt) effect the Meat.
I also must say a Yearling Deer is Very Tasty, the Best. If you take a Young Deer your saving many more, how? Say at this time of the year you take a Big Doe, by now she's probably Pregnant with either 1,2 or possibly 3 Fawns. So by taking that 1 Deer you could be reducing the Deer Heard by up to 4 Deer by taking 1.
I Personally would'nt worry about the condition of the Deers Liver as long as you Cook the Meat right. When you think about it, WE ALL eat the things that are Sprayed and Sprayed again and were still here, for now anyway.
(BP)