Effects of Mud Flat Bacteria Origin Protease Supplementation by Crude Protein Level on Growth Performance, Nutrient Digestibility, Total Protein and BUN Concentration in Broiler

• Published in: Korean journal of poultry science Vol. 34; no. 3
• Main Authors: Kim, H.J. (Dankook University, Cheonan, Republic of Korea), Cho, J.H. (Dankook University, Cheonan, Republic of Korea), Chen, Y.J. (Dankook University, Cheonan, Republic of Korea), Yoo, J.S. (Dankook University, Cheonan, Republic of Korea), Min, B.J. (Dankook University, Cheonan, Republic of Korea), Jang, J.S. (Inha University, Incheon, Republic of Korea), Kang, K.R. (Kofavet, Inc., Cheonan, Republic of Korea), Kim, I.H. (Dankook University, Cheonan, Republic of Korea), E-mail: inhokim@dankook.ac.kr
• Format: Journal Article
• Language: Korean
• Published: 01.09.2007
• Subjects: BUN; growth performance; mud flat bacteria origin protease; nutrient digestibility; PROTEINAS; PROTEINE; PROTEINS; total protein
• ISSN: 1225-6625

This study was conducted to investigate the effects of mud flat bacteria origin protease supplementation by crude protein level on growth performance, nutrient digestibility, total protein and BUN (blood urea nitrogen) concentration in broilers. A total of four hundred eighty broilers were randomly allocated into four treatments with six replications for five weeks. Dietary treatments included 1) high crude protein diet, 2) high crude protein diet + 0.1% protease, 3) low crude protein diet and 4) low crude protein diet + 0.1% protease. During the entire experimental period, weight gain and feed/gain were improved in treatments of high crude protein diets and low crude protein diet added protease compared with treatment of low crude protein diet without protease (P less than 0.05). Similarly, DM digestibility was also improved in treatments of high crude protein diets and low crude protein diet added protease compared with treatment of low crude protein diet without protease (P less than 0.05).