Hen. On the poultry farms, antibiotics are used to prevent diseases in birds.
Meat. On farms, antibiotics are used to prevent diseases in animals.
Milk products. If the cow is feeding antibiotics, then it will have milk with antibiotics. And antibiotics are sometimes directly added to milk so that it is less than spoiled.
A fish. Nowadays, fish are often grown in closed water bodies. Fish live there in very close conditions and very often sick. So that they do not hurt, antibiotics add to the water. Especially a lot of fish with antibiotics in Asia countries.
Shrimp. They are as well as fish, often bred on special farms in ponds. They are lacking places too. And so that the shrimps do not get sick into water, as in the case of fish, antibiotics are added.
Tip: There is one option - it is to look for meat from farmers who do not use antibiotics. With eggs the same. There are no antibiotics in fermented antibiotics, as milk fungi in such milk simply die. But in the fish antibiotics is much easier to avoid. Do not take salmon and trout. Most often they are grown on farms and just feed antibiotics. And when you buy shrimp, it is important that the packaging is "caught in natural conditions". Pay attention - caught, and not grown!