Question

merits and demerits of poultry farming

Answer 1

merits of polutry farming are people can fresh and healty range of meat and organic meat and eggs.
demerits of polutry farming are it may leads to end of some animals and people start eating all kinds of animals and it may lead to in balance of food web.

Answer 2

Merit is that we eat healthy eggs and meat.
Demerit is that people start eating all types of animals which in turn harms the food chain.