As the row over intellectual property (IP) rights on artificially inseminated (AI) bulls rumbles on, the rubber is going to hit the road at some point over the next few weeks as farmers will have to make up their minds if they are going to sign the terms or not. Opting not to sign up for the membership models or contracts put forward by the AI companies will lock farmers out of the opportunity of using what they call G1 or first-generation bulls this breeding season.