Using PJC, you can account for all related expenses then revenue once sold. Alternatively, you can track animal expense / revenue using detail-level optional fields or even GL segment. 

In Service Manager there are a couple of ways to handle this scenario depending on the numbers of animals and the level of costs tracking required for those animals. 

For larger, more expensive animals, creating equipment records for each animal and attaching the Equipment to a Job (one Job per animal) would provide the ability to track costs for the individual animal and eventually revenue, once the animal is sold. Service Manager can track costs and gross profit per animal, per breed and/or total livestock.

For many animals, such as chickens, setting them up as inventory would allow for the bulk management of quantity, costs etc. This would be handled through accummulating costs on an ongoing Job containing the stock and then returning the stock to inventory for shipping when it comes time to sell the stock. This would provide a proportion unit cost to raise each stock animal.