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Pakistan Journal of Nutrition

Year: 2015  |  Volume: 14  |  Issue: 3  |  Page No.: 126 - 130

Improving the Nutrient Quality of Carrot and Fruit Juice Wastes Mixture for Poultry Diet Through Utilization of Rice-Hull Ash Filtrate

Yose Rizal, Maria Endo Mahata, Guoyao Wu, Hapris Maryudi and Mira Andriani


Two experiments had been conducted to improve the nutrient quality of carrot and fruits (apple, mango, avocado, orange, melon and tree-potato) juice waste mixture. Experiment 1: to determine effects of rice-hull ash filtrate level and soaking length on nutrient contents of this juice waste mixture. A 3 x 4 factorial experiment in a completely randomized design with 3 replicates was performed. First factor was rice-hull ash filtrate level (10, 20 and 30%) and second factor was soaking length (0, 24, 48 and 72 h). Measured variables were: crude fiber, crude protein and ether extract contents. Experiment 2: to compare treated vs. untreated juice wastes mixture numerically. Nutrient contents (crude fiber, crude protein and ether extract), anti-nutrition contents (phytate and tannin) and nutritive values (amino acids profile, nitrogen retention and metabolizable energy) of treated juice waste mixture were compared with untreated one. Results of experiment 1: crude fiber and ether extract reduced (p<0.01) by soaking in 20% rice-hull ash filtrate for 72 h, while crude protein increased (p<0.01). In experiment 2, crude fiber and ether extract decreased from 17.10 to 12.70% and 6.18 to 5.50%, respectively. Crude protein and phytate increased from 9.58 to 12.22% and 0.84 to 1.28%, respectively. Tannin content did not differ (1.60 vs. 1.59%). Amino acid contents were improved. Nitrogen retention and metabolizable energy were augmented from 59.99 to 67.57% and from 1744 to 2717 kcal/kg, respectively. In conclusion, carrot and fruit juice wastes mixture soaking in 20% rice-hull ash filtrate for 72 h improved its nutrient quality.

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