Guangdong Province Key Laboratory of Animal Nutrition Control of Animal Science China Agricultural University;
College of Animal Science and National Engineering Research Center for Breeding Swine Industry China Agricultural University 510642;
Guangdong Laboratory for Lingnan Modern Agriculture China Agricultural University;
State Key Laboratory of Animal Nutrition of Agriculture and Rural Affairs Feed Industry Center Agricultural University;
Chia Tai Conti Agri-Husbandry Group Co.;
SOW; Sodium acetate; Lactation performance; Milk fat; Gut health;