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Optimization of enzymatic hydrolysis of palm kernel expeller and its effect on broiler's growth performance


Chen, Wei Li and Jahromi, Mohammad Faseleh and Abdullah, Norhani and Idrus, Zulkifli and Liang, Juan Boo (2017) Optimization of enzymatic hydrolysis of palm kernel expeller and its effect on broiler's growth performance. In: 6th International Conference on Sustainable Animal Agriculture for Developing Countries (SAADC 2017), 16-19 Oct. 2017, The Singhasari Resort, Batu City, Indonesia. (pp. 211-213).


The effectiveness of enzymatic hydrolysis is dependent on various factors such as temperature and moisture content which influence the stability and functionality of enzymes. In this study, parameters influencing the enzymatic fermentation of palm kernel expeller (PKE) were optimized employing response surface methodology (RSM). In addition, the effectiveness of enzymatic treatment of PKE in improving its inclusion level in broiler diets was evaluated. The results showed that temperature, enzyme concentration and hydrolysis time had significant (P< 0.01) effect on the enzymatic hydrolysis of PKE. Using the crude enzyme produced by Aspergillus terreus K1, maximum reduction of crude fiber (40%) were achieved by fermenting the PKE at 60% initial moisture with 9.0 U/g PKE mannanase at 51 °C for 18 h. Results of the growth performance study showed an increase in FCR with increase in PKE inclusion level. However, increasing the inclusion rate of enzyme-treated PKE to 30% did not affect FCR of broilers as compared to those fed 20% PKE. Overall result of this study indicates that birds can be fed with 5% of PKE during the starter period and the PKE inclusion level can increase to 20% PKE in the finisher diet.

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Additional Metadata

Item Type: Conference or Workshop Item (Other)
Divisions: Institute of Tropical Agriculture and Food Security
Publisher: Faculty of Animal Husbandry, Brawijaya University
Keywords: Palm kernel expeller; Response surface methodology; Enzymatic fermentation
Depositing User: Nabilah Mustapa
Date Deposited: 03 Mar 2019 23:59
Last Modified: 03 Mar 2019 23:59
URI: http://psasir.upm.edu.my/id/eprint/66598
Statistic Details: View Download Statistic

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