How should the Zakah due on the poultry farm be calculated?

Q: I have a poultry farm, its description is as follows:I made an agreement with one of the big national company, for which there are no competitors in this field. This company provides us with one-day old chicks and our workers raise them. The company also supplies the poultry feed required during the rearing period but we have no choice to choose the time of receiving the chicks or the poultry feed. Rather, the national company sets the system of work. The period of raising ranges between 40 and 50 days. Then, the company buys the suitable chickens of proper weight and distributes them to retailers.A- We buy the young chicks from the company.B- We buy the poultry feed from the company. (Part No. 8; Page No. 109

A: You should count the chicks you have after the passing of every Hawl and also count the money you have, which is the capital, and the profits and pay 2.5% of the total sum as Zakah, because this is a case of commercial commodity.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.