Special physiological functions and living habits of pigs

The special physiological functions and living habits of pigs include: first, multiple births, high yield, short generation interval; second, rapid growth and development, short production cycle; third, omnivorous, high feed utilization rate; fourth, thick subcutaneous fat, sweat gland degeneration, poor body heat regulation ability; fifth, developed sense of smell, sensitive hearing and poor vision; sixth, love clean, easy to adjust; seventh, gregarious, obvious dominant sequence; eighth, strong adaptability and wide distribution.