This research evaluated the effects of de-oiled lecithin (DOL) as an exogenous emulsifier in broilers. Totally, 480 male broilers (1-d-old, Ross308) were raised for a 35-day feeding experiment. Broilers were randomly divided into three dietary groups including the addition of 0, 61.80%de-oiled lecithin (DOL-60), 97.16%de-oiled lecithin (DOL-97) into the basal diet. Broiler chickens fed with DOL-60 and DOL-97diets had greater body weight gain (BWG) during 1–7 days, 8–21 days, and the overall experimental period (p< 0.05),greater(p < 0.05) breast muscle percentages, and lower (p < 0.05) low-density lipoprotein cholesterol (LDL/C) concentrations. Furthermore, broiler chickens fed with DOL-97 diet showed the highest (p< 0.05)BWG during 22–35 days and feed intake during 8–21 days, lowest (p< 0.05) feed conversion ratio during 22–35 days and overall period, highest (p< 0.05) concentration of serum high-density lipoprotein-cholesterol (HDL/C), lowest (p < 0.05) concentration of serum low-density lipoprotein-cholesterol (LDL/C),excreta population of Escherichia coli (E. coli), and highest(p < 0.05) value of breast muscle redness. In summary, broiler diets inclusion of DOL-97 decreased the excreta E. coli counts, improved the growth performance, increased breast muscle percentage and redness, and enhanced concentrations of serum HDL/C and LDL/C.

The aim of this study was to determine the effect of dietary supplementation of de-oiled lecithin (DOL) emulsifier on growth performance, nutrient digestibility, blood lipid profile and faecal Escherichia coli (E. coli) and Lactobacillus count in growing pigs. A total of 75 crossbred growing pigs [(Landrace  Yorkshire)  Duroc] with an average initial body weight (BW) of 24.97 ± 1.42 kg (54 days of age) were used in a 6-week feeding trial. Pigs were randomly allotted to one of three treatments [five pigs per pen (three barrows and two gilts); five pens per treatment] based on BW and sex. Treatments consisted of CON, basal diet; TRT1 basal diet þ 0.1% DOL-60; TRT2 basal diet þ 0.1% DOL-97. The DOL-60 and DOL-97 contents were 60% and 97% of DOL, respectively. Results indicated that the increased contents of DOL lead to higher average daily gain, gain-to-feed ratio, digestibility of dry matter, nitrogen and gross energy and faecal Lactobacillus counts. Meanwhile, blood triglyceride and total cholesterol were trended to reduce. In conclusion, the supplementation of DOL in growing pig diets could improve the growth performance, nutrient digestibility and intestinal Lactobacillus count, thereby contributing to improved growth rate. HIGHLIGHTSDietary supplementation of DOL improved growth performance and nutrient digestibility of growing pigs. Dietary supplementation of DOL modulated gut health by altering intestine Lactobacillus count of growing pigs. Dietary supplementation of DOL improved health status through decreasing blood triglyceride and total cholesterol of growing pigs.