Metabolizable energy of mannanase-treated copra meal (MTCM) and growth performance of broilers fed with MTCM
1994
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 mannanase was used to hydrolyze copra meal by solid substrate fermentation (SSF). Four liters of culture broth was inoculated to 1 kg copra meal in a fabricated bioreactor. Analysis of MTCM showed marked reduction in crude fiber and a significant increase in energy value. Apparent metabolizable energy 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 diets with MTCM, but on the average, they had consistently greater weekly body weight gain. Expectedly, broilers fed diets with MTCM had consistently better feed efficiency compared to those fed diets with UCM
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