Metabolizable energy of mannanase-treated copra meal (MTCM ) and growth performance of broilers fed with MTCM
1996
Zamora, A.F. | Sapin, A.B. | Luis, E.S. (Philippines Univ. Los Banos, College, Laguna (Philippines) Inst. of Biological Sciences)
Streptomyces sp. no. 17 which produces mannase was used to hydrolyze copra meal through solid substrate fermentation (SSF). Four liters of culture broth were inoculated to 1 kg of copra meal in a fabricated bioreactor. Analysis of mannanase-treated copra meal (MTCM) showed significant reductio in crude fiber and a significant increase in energy value. Apparent metabolizable energy, determined by forced-feeding of 8-week old male broilers, increased by more than 100 percent in MTCM. Feeding trial in broilers was also conducted to evaluate the performance of MTCM as feed ingredient as compared to untreated copra meal (UCM). Highly encouraging results were obtained when crude fiber reduction of copra meal was more than 25 percent. Feed consumption was lower in broilers fed with MTCM diets, but on the average, they had consistently greater weekly body weight gain. Expectedly, broilers fed with MTCM diets had consistently better feed efficiency compared to those fed with UCM diets
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