Evaluasi Nilai Nutrisi dan Kecernaan In Vitro Pelepah Kelapa Sawit (Oil Palm Fronds) yang Difermentasi Menggunakan Aspergillus niger dengan Penambahan Sumber Karbohidrat yang Berbeda

Abstract

Oil palm frond (OPF) is one of potential sources of alternative feed, but has limited use due to high crude fiber and low crude protein contents. Fermentation is one of the methods widely applied to improve nutritive value of animal feed. The purpose of this research is to increase nutritive value of fermented oil palm fronds by adding different soluble carbohydrate source into fermentation media. The results of the experiments indicated that fermented oil palm fronds by Aspergillus niger had a significant effect (P<0,05) on the content of crude protein, crude fiber, and ash.Generally, fermented oil palm fronds with different soluble carbohydrate was able to increase the content of crude protein of oil palm fronds, but not optimal yet in reducing the crude fiber content of fermented substrate. However, the addition of rice bran on the fermentation medium showed the best results, characterized by increasing crude protein and decreasing crude fiber contents as well as improved dry matter and organic matter digestibility, reflected in high concentration of VFA.

Improving Sugarcane Bagasse as Animal Feed by Ammoniation and Followed by Fermentation with Trichoderma harzianum (In Vitro Study)

“…The highest organic matter content was application of 10% soluble carbohydrate with the average value of 98.23%. Research concocted by Wajizah et al (2015) also indicated that application of soluble carbohydrates significantly effect on organic matter due to crude protein improvement in the substrate. Luh (1991) reported that during fermentation process, yeast growth and microbial protein synthesis from metabolic process caused higher protein content in the substrate.…”

“…Research conducted by Wajizah et al (2015) application of soluble carbohydrates into fermentation media improved IVDMD. It was probably due to availability of nutrients in the in vitro media and resulted in optimum growth of rumen microbial.…”

“…However, agricultural and agro-industrial by product feed conteined high percentage of fiber and difficult to be digested by animals (Suwandyastuti and Rimbawanto, 2011). Researchs conducted by scientiests indicated that pre-treatment of high fiber feed were able to improve nutrient content and digestibility of feed (Bisaria et al, 1997;Tang et al, 2008;Wanapat et al, 2009 ;Rahman et al, 2011 ;Shrivastava et al, 2011 ;Wajizah et al, 2015 ;Samadi et al, 2015).…”

Substitusi rumput gajah dengan rumput laut coklat (Sargassum polycys-tum) terhadap produk metabolisme rumen dan kecernaan nutrien secara in vitro

“…Semakin lamanya waktu inkubasi maka mikroba rumen dapat mencerna karbohidrat lebih banyak dan hasil fermentasi protein dan serat kasar pakan, sehingga konsentrasi VFA tinggi. Nilai pH rumen masih sesuai dengan pH rumen yang normal untuk berlangsungnya proses selulolisis, proteolysis, deaminasi, fermentasi pakan dan pertumbuhan mikroba rumen yaitu 6-7 (Wajizah et al, 2015;McDonald et al, 2010). Nilai pH (6,78-6,95) menunjukkan bahwa fermentasi pakan antara proporsi serat dan pati dalam rumen seimbang.…”

“…Hong et al (2015) melaporkan konsentrasi N-NH3 3 -9 mM masih bisa mendukung sintesis protein mikroba untuk pertumbuhannya. Wajizah et al (2015) melaporkan bahwa tingginya produksi VFA yang diikuti rendahnya konsentrasi amonia mencerminkan efisiensi penggunaan amonia oleh bakteri untuk sintesis protein mikroba dan pertumbuhannya. Pakan rumput gajah dan rumput laut coklat mengandung protein yang tahan degradasi sehingga menghasilkan kandungan N-NH3 yang rendah.…”