Large-scale livestock and poultry farms refer to pig, cattle and laying hens farms with legal personality approved by local agricultural and industrial and commercial administrative departments.

Broiler farm It has a certain scale, and the index is that the number of pigs slaughtered is greater than or equal to 500; The number of cows on hand is greater than or equal to100; The slaughter amount of beef cattle is greater than or equal to 200; The number of laying hens is greater than or equal to 20000; Broiler slaughter ≥ 50,000.