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primary topic: Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants

Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants
type: AcademicArticle
type: Article
abstract: High protein content in silage feed often triggered excessive proteolysis caused by proteases derived from both plants and spoilage bacteria, which reduced the nutritional quality for ruminants. Temulawak (Curcuma xanthorrhiza) is an herbal plant with antibacterial and antioxidant properties, which have been reported to reduce proteolysis in previous studies. This study aimed to evaluate the effects of temulawak powder (TP) as an anti-proteolysis additive in the fermentation of total mixed ration-based okara silage (TMRO-silage) and its impact on silage characteristics. Additionally, the study examined the effects of drying temperature on temulawak extract optimization. Temulawak was dried at 50, 65, and 80°C, followed by the measurement of phenol, flavonoid, and ferric reducing antioxidant power (FRAP) content. The TMRO-silage was composed of commercial feed and okaras (1:1 w/w), supplemented with 0-1% temulawak in increments of 0.25% (5 treatments and 4 replications). Fermentation lasted for 14 days. Proximate and in vitro analyses (control vs. temulawak treatments) were conducted to assess silage quality. Drying temulawak at 65°C significantly (P < 0.01) increased phenol (16.9 µg quercetin equivalent, QE), flavonoid (23.3 µg QE), and FRAP (30.1 µg QE) content per dry weight. Temulawak supplementation significantly reduced ammonia levels and increased the crude protein content of TMRO-silage (P < 0.01). Moreover, it decreased ammonia concentration in the rumen (P < 0.01), improved dry matter and organic matter digestibility (P < 0.05), and notably reduced methane production per total gas volume (P < 0.05). In conclusion, temulawak effectively preserves the quality of complete feed silage, enhances rumen metabolism, and mitigates methane emissions.
date: 2025-07-30
volume: 15
issue: 4
is part of: Online Journal of Animal and Feed Research
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository
has document: Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants (Text)
has version: Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants (Text)
has published: Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants (Text)
subject: SF Animal culture

Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants (Text)
type: Document
has file: OJAFR15(4)210-219,2025.pdf
has part: OJAFR15(4)210-219,2025.pdf

Online Journal of Animal and Feed Research
type: Organization

Online Journal of Animal and Feed Research
type: Collection
issn: 22287701

Mohammad Miftakhus SHOLIKIN
type: Person
given name: Mohammad Miftakhus
family name: SHOLIKIN

Tri UJILESTARI
type: Person
given name: Tri
family name: UJILESTARI

Novia Amalia SHOLEHA
type: Person
given name: Novia Amalia
family name: SHOLEHA

Mochamad Dzaky ALIFIAN
type: Person
given name: Mochamad Dzaky
family name: ALIFIAN

Dwi BUDIONO
type: Person
given name: Dwi
family name: BUDIONO

Martin Saputra LIM
type: Person
given name: Martin Saputra
family name: LIM

Tekad Urip Pambudi SUJARNOKO
type: Person
given name: Tekad Urip Pambudi
family name: SUJARNOKO

http://eprints.science-line.com/id/eprint/1392/
title: HTML Summary of #1392 <epc:when xmlns:epc="http://eprints.org/ep3/control" test="title">Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants</epc:when>
format: text/html
primary topic: Effect of temulawak (Curcuma xanthorrhiza) powder in reducing proteolysis in fermented total mixed ration with okara for ruminants

SF Animal culture
type: Concept