Effects of dietary supplementation with rhamnolipids on the growth performance, nutrient digestibility, slaughter yield, and lipid metabolism of broiler chickens

• Published in: Italian journal of animal science 2024-12, Vol.23 (1), p.440-449
• Main Authors: Cai, Xuan, Xue, Huiqin, Hang, Yiqiong, Lu, Yonghong, Yao, Junfeng, Lu, Yang
• Format: Article
• Language: English
• Subjects: abdominal fat; blood serum; broiler chickens; carcass quality; Cholesterol; Dietary intake; Dietary supplements; Digestibility; dose response; Emulsification; emulsifying; evisceration; Fat metabolism; feed intake; growth performance; High cholesterol diet; High density lipoprotein; high density lipoprotein cholesterol; Lipid metabolism; liver; Metabolism; Poultry; Rhamnolipids; Slaughter; triacylglycerols
• ISSN: 1828-051X; 1594-4077; 1828-051X
• DOI: 10.1080/1828051X.2024.2319197

The purpose of this study is to investigate the effect of dietary supplementation with rhamnolipids (RLs) on the growth performance, slaughter performance, apparent digestibility and fat metabolism of broilers. Broiler chicks were randomly divided into 3 groups: control (C) group, 100 mg/kg (L) and 1,000 mg/kg (H) RL supplementation groups. The results, after dietary supplementation with RLs for 42 days, revealed a RL dose-dependent promoting effect on feed intake, and an increase of the evisceration index of 42-day-old broilers, but a decrease in the rate of abdominal fat gain. The dietary supplementation with RLs significantly increased the digestibility of protein and fat in broilers. The serum total cholesterol and high-density lipoprotein cholesterol levels of the H group were significantly higher than those of the C group (p