Yaroslavl region. 1h - Interbreeding pigs in the collective farm named after M. Gorky Breitovsky area. Head pig farm E.I. Smirnova near a herd of sows on the river bank. 2h - Interbreeding of pigs and preparation of forage in the collective farm "Labor Army" of the Tutaevsky region. Svinar I.A. Vinogradov takes care of pigs. 3h - Introduction of the experience of the Tutaev pig breeders in the collective farms of the region. Collective farm named after Chkalov: a well-maintained pigsty, preparation of feed. Pig M.I. Borisova and a researcher at the All-Union Livestock Breeding Station inspect the pigs. Corn field.