Livestock is a forms of currency in the North end of The Valley. Livestock refers to animals such as Cows, Chickens, Goats and more. It is most likely that Livestock is worth the most in the north end.
Chickens are farm animals used for food and trade. Chicken eggs are also used as currency, with Lucius making Phoney pay two eggs for his drinks.
Cows are used for food, trade, and transportation.
Goats are used for food and trade.