Offspring are young. This kind of offspring are chicks. chicks will hatch after around 21 days after being lied.
Only fertilized eggs will hatch. Fertilize means to have a chick inside of the egg. To fertilize an egg you need a cock or rooster and a hen.
A hen must turn the egg every hour. Other wise the chick will be stuck to the shell and has a chance of not surviving.
Farming for food
Most people all over the world eat chicken meat and eggs, but not as many eat organic, free range chickens. Other wise they might have got them from factory farmed chickens.
Other Chicken Words
Poultry farmers are chicken farmers. Poultry is another word for chickens. So poultry farming is chicken farming.
A scientific name for a domesticated roster is" gallus gallus".