Effects of fermented broccoli stem and leaf residue on growth performance, serum characteristics and meat quality of growing pigs

Abstract The aim of this study was to evaluate the effects of fermented broccoli stem and leaf residue (FBR) on the growth performance, serum biochemical characteristics, and meat quality of growing pigs. A total of 72 growing pigs (Durox × Landrace × Yorkshire) were subjected to three dietary treatments with different levels (0%, 5% and 10%) of FBR with three replicates for an experimental period of 70 day. The average daily feed intake of growing pigs was higher ( p < 0.05) in the 5% FBR treatment compared with the control group (0% FBR). The serum urea nitrogen content in growing pigs was lower ( p < 0.05) in the 5% and 10% FBR treatments. The lightness value was higher ( p < 0.05) in the longissimus dorsi muscle of pigs fed 5% and 10% FBR diets compared with the control group, and the yellowness value was increased in pigs fed the 10% FBR diet compared with pigs fed the control diet. Overall, the beneficial effects of FBR supplementation on serum biochemical parameters, and meat colour without undermining the growth performance indicate that up to 10% FBR could be used in diets to enhance the production of growing pigs.