Document Type : Research Paper

Authors

• Fereshteh Jamili ¹
• Farid Shariatmadari ²
• Mohammad-amir Karimi Torshizi ³

¹ Msc, Department of Poultry Science, Agricultural Collage, Tarbiat Modares University, Iran

² Professor, Department of Poultry Science, Agricultural Collage, Tarbiat Modares University, Iran

³ Assistant professor, Department of Poultry Science, Agricultural Collage, Tarbiat Modares University, Iran

Abstract

This experiment was conducted to evaluate the effect of emulsifiers such as lecithin and bile salts on
broilers performances fed diet containing vegetable fats. 192 male Ross broiler chickens were randomly
allocated in a factorial experiment design of 3 × 2, consisting two sources of fat (four percent fatty acids
or soy bean oil) and three emulsifiers (none, one percent lecithin and 0.05 percent bile salts) in
completely randomized design with four replicates and eight birds per each. Total weight gain and feed
conversion ratio was not affected by fat sources while soya oil addition to diets increased feed intake
(P<0.05). Emulsifiers’ addition to diet improved weight gain feed conversion ratio (P<0.05). The length
and width of villi in jejunum, and crypt depths in duodenum were not affected by fat sources, while, crypt
depth in jejunum and width of villi in ileum of birds fed on diets containing fatty acid were higher than
other birds (P<0.05). Addition of emulsifiers to diets increased dietary metabolisable energy (P<0.05). In
conclusion, addition lecithin or bile salts to diets containing soybean oil or its fatty acids, improved body
weight gain and feed conversion ratio in broiler chicks by increasing in absorption area of intestine and
dietary metabolisable energy.

Keywords

• Bile salt
• Broiler Chicken
• fat
• Intestinal morphology
• Lecithin
• Performance

20.1001.1.20096776.1392.15.2.5.5