I too have wanted to do this and have done a little research.Since my main goal was crossbreeding anyway definitely frozen sperm way to get started and almost only reasonable way to get started anyway.Still would be expensive BUT did converse with Boer importers and got some encouragement.Also...
Not only do my dogs eat it but they seem to be pretty picky about which poops they eat look around until they find the one /ones they want LOL Usually animal worms are specific to their hosts except possibly roundworms so per cows won't infect goats etc....but with chickens not so sure