None, since they do not get or have a job to make money like humans do. Making income or profits as far as money is concerned is a human trait, not a farm animal trait.
But as far as raising and selling animals is concerned in order for the producer to make money, chickens is the farm animal that generates the most income for farmers. However, a purebred beef breeding herd can generate more income than a chicken farm because purebred beef animals can sell for quite a bit.
If you have the land, farm animals are much more profitable.
Cow
pig
There is a lot of debate about which farm animal is the most profitable to raise and get a high return on investment. Some say it is cattle but others say goats.
The chicken would be the best they ley eggs and are good for meat. :D
The most famouse nz farm animal is probably the cow.
the farmer
The Border Collie is most commonly to be on a farm. Its herding and running skills are perfect for herding sheep.
Definitely a horse!
shannon
They sure are around here. We shoot them when we have time. They are a flying rat for the most part. We do not consider them a farm animal, more of a problem animal.
Truthfully, the answer is marijuana.But since that is illegal, you probably shouldn't grow it.
Snow ball
1) pigs 2) cows 3)chickens 4) lambs 5 ) ducks/geese
Boxer.