If you birds have not been getting grit, they will need grit to process the corn in their crop. I would try and get the cheapest crumble available and in a 25# bag of possible for the final week instead of grains.
Hey Cris, Not quite what your asking for but... I'm a big fan of electric netting and charger. I use it in my field as it can be configured to available forage. Granted, putting a top netting is impossible, but I think it is great to get maximum use of available space. I've lost a few...
Have you considered putting the coop on stilts with a 2'-3' air space underneath? Airflow will help cool things down somewhat. Vents high and a few low to remove hot or humid air.
Hi AK Mommaf8, I got my GC 's on April 9th and couldn't see a difference either. I can tell now which are which by size. For being a medium size breed they have grown as big as my Saxony and Khaki Campbells. Mike
They mature faster then BR so those not up to snuff can be harvested sooner vs taking 20-22 weeks and eating more feed. If I remember they are also crosses from several other breeds.
As mentioned a lot depends on where you are located Too many birds in a small space is looking for trouble. Look at the issue we have going on in the world today. Close proximity more issues. Disease, bugs, ammonia build-up,fighting. My wife and I in 1200sq ft house and most days not big...
Mine came from Holderreads in Oregon to Ohio. Shipped Monday with Friday delivery and was worried. Got a call on Thursday and all was good. Same as you, I can trust my PO.
The coarser the sand the more air can infiltrate it, more aerobic breakdown. Concrete sand would be better in my opinion. You can purchase it from construction/sand and gravel supply.