There's your answer:  The protein is very low.  They need at least 16%.  It does not have the vitamin and mineral balancer either.  So, it's no wonder your birds are loosing condition.  And, IMO, it's highly suspect if they do not put a mill date on it.  It could be a week old or 8 months old.  You would have no way of finding out how old it is.
	
		
			
		
		
	
				
			
	