The culling operation was conducted on Friday after the death of some pigs due to African swine flu in a piggery farm at Batapara in the district.
These include virus transmission via fomites such as vehicles, people, or clothing, through consumption of contaminated pork products, and from infected kept pigs.
Around 11 am on Thursday, around 10 people armed with sticks and agricultural tools attacked the members of the other family, including two women.
Considering the outbreak of African Swine Fever, a deadly disease that kills animals, reported in the neighbouring state of Kerala.
The farmers say that pigs mainly come in search of the maize fields, and trample other fields on their way.