Effects of feeding pre-treated oil palm frond with filamentous fungi on growth performance, digestibility, and meat quality of goat

Oil palm frond (OPF) poor nutrient composition limits the effective use of OPF for ruminant feeding due to the high amount of lignin (15-56% w/w). However, OPF has great potential as the source of dietary energy for ruminants, as it contains about 80% of the structural carbohydrates on a dry matter basis. Lignin is chemically challenging to be degraded due to a complex three-dimensional network formed by various ether and carbon- carbon linkages among the lignin subunits and structural carbohydrates. The most effective and actively used biological pre-treatment method for fibrous by-products conversion by lignin degradation is fungal pre- treatment. The present study aims to improve the nutritional value of OPF to be the ruminant feed. The enzyme activity of the filamentous fungi was determined. The synergistic effect of the fungi was also assessed to enhance the ligninolytic enzyme activity of the fungi. The in vitro and in vivo ruminal degradability of OPF pre-treated with enzyme extract was also assessed. The OPF pre- treatment was done by comparing between the silage pre-treatment with overnight pre-treatment by four different enzyme extract. In this study, eight filamentous fungi were identified which are F49 (Marasmius palmivorus MN871732), F02 (Mucor fusiformis KY560315), F77 (Penicillium citrinum MK312421), F32 (Trichoderma asperellum MK928414), F14 (Schizophyllum commune MN856258), F39 (Phanerina mellea or Ceriporia mellea MK432982), F03 (Aspergillus neoellipticus MG596660) and F65 (Syncephalastrum racemosum MH857909). This study found that the enzyme activity production of the desired enzyme was best shown by Phanerina mellea. The enzyme extract pre-treatment by Phanerina mellea (STB) showed highest in vitro gas production after 24 h incubation with the value of 17.92 mL/250 mg DM. In animal trials, the pre- treatment of OPF with enzyme extract from Phanerina mellea and Schizophyllum commune improved the body condition score (BCS) from 0 - 25% to 75% - 100%. The serum biochemical profiles were similar between each diet which is in the standard value of healthy goats. The evaluation of meat and carcass in this study showed that the inclusion of the pre-treated ensiled OPF potentially improved the carcass performance of the goats and keep the good meat quality.

Text FPV 2024 9 - Full Text.pdf Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (3MB) Text FPV 2024 9.pdf Restricted to Repository staff only Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (4MB)

Actions (login required)

View Item