Hi , My name is Christina and I live in NorthWest NJ. I have a heifer, she is almost 18 months old. I want to have her artificially inseminated (possibly to be performed by a freind of mine who used to work for a dairy farm). What is a sure fire way to tell she is ready? I dont want him to have to come more than once to AI. She was mooing and mounting my steer this past week. I think that was her heat. Will she have another in 60 days or is that just an average? After noticing the behavior, how long do i have to get her bred? How long does semen last in a normal freezer? How long does semen last once it is thawed? How do you thaw semen, room temp? Where do you get your semen from? Does anyone out there artificially inseminate there own cows and think its doable , or do I need this freind to do it? Okay, no stupid semen jokes, Im new to AI. I just dont want a bull on my farm. Please, any info would help.