The system of housing cattle, which costs less saves labour and provides more comfort to the animal is

The system of housing cattle, which costs less saves labour and provides more comfort to the animal is loose housing system.
A system of housing in which animals are kept loose in an open paddock in groups of 40 - 50 throughout the day and night.
The loose housing system involves low cost of construction and maintenance, provides more comfort to animals, and ensures easier detection of oestrus and better labour efficiency, as compared to the conventional housing system.