What is animal husbandry? Differentiate between milch and draught animals

What is animal husbandry?
Differentiate between milch and draught animals. What do the following supply to dairy animals:
(i) Roughage
(ii) concentrates.

Animal husbandry: It is the scientific management of animal livestock.
Milk-producing female animals are called milch animals whereas animals used for farm labour are called draught animals.
(i) Roughage: fibre
(ii) Concentrates: High level of proteins and other nutrients.