Which is the world's highest milk-yielding breed of cattle?

In which type of breeding are the desired genes accumulated?

Explain the dairy industry and its management.

Selective breeding,progeny testing,and improvement are primarily associated with which of the following?

All the following are objectives of dairy farm management,except:

$A$: Milk is a valuable product used as a nutritious food.
$R$: It is the fresh natural secretion of the mammary glands of female mammals for the nourishment of their young ones.