Tuesday, April 12, 2011

Effect of fermented product from Bacillus subtlis on feed conversion efficiency, lipid accumulation and ammnonia production in broiler chicks

U. Santoso1, K. Tanaka2, S. Ohtani3 and M. Sakaida4
1 Department of Animal Science, Faculty of Agriculture, Bengkulu University, Bengkulu Indonesia
2Laboratory of Animal Nutrition, Division of Bioresources and Bioproduction, Graduate School of Agriculture, Hokkaido University, Sapporo 060-0809, Japan
3 Faculty of Agriculture, Gifu University, Gifu-shi, 501-11 Japan
4 Japan Biotics Company, Japan
Abstract. This study investigated the effect of fermented product from Bacillus subtilis (FPBS) on feed conversion efficiency, fat accumulation and ammonia production in broiler chicks. Sixty female broilers (strain Chunky, 7-day old) were divided into four groups and raised in individual cages. One group was fed a commercial diet without supplementation of FPBS as the control and the other groups were fed commercial diets containing FPBS, either 0.5, 1.0 or 2.0%, for 21 days from 7 to 28 days of age. Water and feed were given ad libitum. Feed conversion efficiency was significantly improved in chicks supplemented with 0.5 or 1% of FPBS as compared with the control (P<0.05). The activities of hepatic acetyl-CoA carboxylase and fatty acid synthetase, and contents of triglyceride and cholesterol in the liver were significantly decreased in treatment groups (P<0.05) as compared with the control group. FPBS has no effect on the concentration of plasma triglyceride, phospholipids and cholesterol. Feeding FPBS at 1% or 2% levels reduced ammonia gas release (P<0.05). The inclusion of FPBS at 1% level may be recommended both to improve production efficiency and to reduce air pollution caused by ammonia gas release. For production efficiency to reach maximal profit, the inclusion of FPBS at 0.5% level can be recommended. Feeding FPBS reduced fat accumulation in the liver (Asian-Australasian Journal of Animal Science, 2001, 14 (3): 333-337).
Key words: Fermented product, Bacillus subtilis, feed conversion efficiency, ammonia gas release, lipid accumulation.

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