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http://dx.doi.org/10.5536/KJPS.2009.36.1.047

Effects of Spider-Derived Protease (Arazyme®) Supplementation of Corn-Soy Diets on the Performance in Laying Hens at the Late Production  

Kim, J.U. (College of Animal Bioscience and Technology, Konkuk University)
Kim, J.Y. (College of Animal Bioscience and Technology, Konkuk University)
Kim, J.S. (College of Animal Bioscience and Technology, Konkuk University)
Lee, B.K. (College of Animal Bioscience and Technology, Konkuk University)
Lee, S.Y. (College of Animal Bioscience and Technology, Konkuk University)
Lee, W.S. (College of Animal Bioscience and Technology, Konkuk University)
You, S.J. (College of Animal Bioscience and Technology, Konkuk University)
Ahn, B.K. (College of Animal Bioscience and Technology, Konkuk University)
Kim, E.J. (Division of Animal Care, Cheonan Yonam College)
Park, H.Y. (Korea Research Institute of Bioscience and Biotechnology)
Son, K.H. (Insect Biotech Co. Ltd.)
Shin, D.H. (Insect Biotech Co. Ltd.)
Kang, C.W. (College of Animal Bioscience and Technology, Konkuk University)
Publication Information
Korean Journal of Poultry Science / v.36, no.1, 2009 , pp. 47-55 More about this Journal
Abstract
This study was carried out to investigate the effects of spider-derived protease [Arazyme (AZ)] supplementation on egg production, egg quality, cecal microflora and viscosity of intestinal contents in laying hens at the late production. A total of two hundred, 59-wks-old, Hy-Line Brown layers were divided into four groups, placed into 5 replicates per group (50 birds per group) and fed one of four diets containing 0.05, 0.075 or 0.1% AZ or control for 5 wks. The results showed that egg weight in group fed the diet containing 0.05% AZ was significantly higher than those of other groups (P<0.05). There were no significant differences in egg interior and eggshell qualities among the groups. The serum parameters such as total cholesterol, the levels of GOT and GPT were not influenced by AZ feeding. There were no significant differences in the cecal number of total microbes, Coliforms and lactic acid bacteria among the groups. The viscosity and ammonia concentration of intestinal contents in the groups fed AZ were significantly reduced compared to those of the control (P<0.05). In conclusion, laying hens fed AZ supplemented diet improved egg weight as compared with that of control. In addition, the AZ supplemented diet reduced the viscosity and ammonia concentration of intestinal contents, reflecting a significant feed enzyme effect.
Keywords
Arazyme; laying performance; egg weight; ammonia concentration; laying hens;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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