Document Type : Research Paper

Authors

• Amir Salarinia ¹
• Nazar Afzali ¹
• Seyyed Javad Hosseini-Vashan ²
• Moslem Bashtani ¹

¹ Department of Animal science, Faculty of agriculture, University of Birjand, Birjand, Iran

² Animal Science Department, Agricultural Faculty, University of Birjand

Abstract

To evaluate the effect of type (Rice Hull (RH) and Oat Hull (OH)), level (3 and 6 percent) and particle size (0.5 and 2 mm) of insoluble fiber on performance, carcass characteristics and intestinal morphology of chickens, 360 day-old male broilers (Ross 308), were use in a completely randomized design with 9 treatment and 4 replicate with 10 birds each, for 42 days. In the 29-42 days, broilers fed 6 percent with 0.5 mm RH had higher (P≤0.05) average daily gain, daily feed intake and lower feed: gain than control group. In fact, the 6 percent with 0.5 mm OH inclusion reduced (P≤0.01) abdominal fat and carcass performance as compared to control (P≤0.0`5). Results showed that broilers fed OH and RH had higher relative weight of gizzard and gallbladder than broilers fed the control diet (P≤0.05). Broilers fed RH had higher villus length than other treatment in the jejnum at 21 and 42 days of age and duodenum at 21 days of age (P≤0.01). In this experiment, the broiler fed 3 percent RH with 2 mm particle size had the highest epithelium width (P≤0.01) in the ileum section at 21 day of age. Therefore the results showed inclusion of 3 percent RH with 0.5 mm particle size to broiler diets may improve the growth performance and intestine morphology.

Keywords

• carcass characteristics
• Intestinal morphology
• Oat hull
• Particle size
• performance
• Rice hull

20.1001.1.20096776.1397.20.4.11.0