I am raising Dorkings for conservation, improvement, eggs, and meat. Last year was my first year with them and after choosing our 4 best boys, we slaughtered the remaining few (kept all the girls). They were about 20 weeks when at processing and we decided that in the future we'll wait much longer. The processed birds were pretty small (2-3#). Now, granted, this is a slow-growing breed, but I think that for most dual purpose standard breeds, waiting until they are closer to 1 year old is probably best. Our 4 boys are now almost 1 and I'm going to narrow them down to the two best in the next week or so and then breed those two. The other two will go to freezer camp. They were in tight quarters all winter (too tight, I found out--I'm going to do something different next winter) so they ought to be nice and tender. I 'm guessing they're about 9# now, so it will be interesting to see what their processed weights will be.