It is my understanding that a dark yellow yolk is from the hen grazing on insects and thus getting insect protein instead of pure grain. But I am not a poultry expert.
I know a lot more about cattle and hogs. Some of their numbers seemed odd to me. The dairy seems about right — for a standard 305 day lactation 8,000 lbs would be a decent cow, and 10,000 very good. So 35,000 lbs for 4-ish is pretty good and indicates a good feeding plan. The beef and hog finish weights, though, just seem strange. I suspect those are really bad guesses and not actual weights.
I know a lot more about cattle and hogs. Some of their numbers seemed odd to me. The dairy seems about right — for a standard 305 day lactation 8,000 lbs would be a decent cow, and 10,000 very good. So 35,000 lbs for 4-ish is pretty good and indicates a good feeding plan. The beef and hog finish weights, though, just seem strange. I suspect those are really bad guesses and not actual weights.