I've only been in the cattle bussiness for 6 or 7 years. I have calfs that grow to 600 pounds in the summer months but every calf I've had after August seems to not grow very well. I'm only seeing 400 pounds or less at 6 months old. Is this the norm or am I doing something wrong? I give all the hay the mamma's will eat and I keep out Liquid feed that's suppose to be 32% fat. Any suggestions?