I need help- I'm not good with numbers and I am not knowledgable about weight gain in piglets. I want to produce fair pigs for our county's 4H youth this year. Our weigh in for this county is Dec 7 give or take a few days. When will I have to AI to ensure our show pigs are no more than 75 pounds on Dec. 7? I would like them all to be 65-70 ideally but as long as they don't go over weight, we'll be fine. Thanks in advance.