Little GiantFarm & Ag 9836 36-Inch Range Feeder, 16 Ounce, Galvinized

Q: Approximately how many pounds of chick starter/grower does it hold?

The size is 36.2 x 6.8 x 6.5 inches. I really don't know how much it holds. I never checked it but it does hold a lot.I purchased it to put wild bird seed in for the birds. I do like the one mentioned below much better. They still havesome in stockMiller Manufacturing 9814 12-Inch Slide Top Poultry Feeder (Discontinued by Manufacturer)http://www.amazon.com/Miller-Manufacturing-9814-Discontinued-Manufacturer/dp/B001E8RH1M/ref=sr_1_18?ie=UTF8&qid=1435772139&sr=8-18&keywords=chicken+feeders+galvanized

Q: Metal trough big enough for 8 chickens?

For 8 baby chicks, yes. That is the number we had this year and it was perfect! Just a tip, as they grew, I placed the trough on blocks so they could stand and eat more comfortably. It also kept them from standing and making a mess in the food.