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Dried Bacillus subtilis Culture Reduced Ammonia Gas Release in Poultry House |
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U. Santoso, S. Ohtani, K. Tanaka, M. Sakaida |
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| Abstract |
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The present study showed the advantages of dried Bcillus subtilis culture (DBSC) supplementation on reducing ammonia gas release in the poultry house. In experiment 1, 65-week-old Hyline W-36 hens were raised in individual wire-floor cages in a windowless house, and divided into two groups of 180 hens each. One group was fed diets without DBSC as the control and another group was fed a diet supplemented with 2% DBSC. In experiment 2, 2-week-old broiler chicks were divided into 3 treatment groups of 20 chicks each and maintained in individual floor cages. One group was fed the diet without DBSC and other two groups were fed the diet supplemented with 1 or 2% DBSC, respectively. In experiment 1, DBSC consistently reduced ammonia gas release in the laying house (p<0.01) and manure storage facilities (p<0.01). incubation of feces for 1,2,2,3,4,5,24 or 48 hours showed that DBSC consistently reduced ammonia gas release. In experiment 2, DBSC reduced ammonia gas release in the broiler house; however, DBSC had no effect on total N, urate-N and ammonia-N contents of feces, but it improved cumulative N utilization and decreased serum urea-N concentration when chicks when chicks were fed 1% DBSC. |
| Keywords:
Dried Bacillus subtilis Culture; Ammonia Gas Release; Poultry House; N Utilization |
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