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All Journal Jurnal Biologi Tropis Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Journal of Natural Sciences Sriwijaya Bioscientia BIOVALENTIA: Biological Research Journal Jurnal Sylva Lestari Jurnal Medika: Medika
Yadi Oktariansyah
Sriwijaya University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Dentistry Earth & Planetary Sciences Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health

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From Illumination to Biological Regulation: A Biological Reappraisal of Lighting Management in Chickens – A Review Oktariansyah, Yadi; Putri, Ferta Liza
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11515

Abstract

Lighting management is a fundamental component of chicken production systems and has traditionally been applied as a technical tool to enhance activity, feeding behavior, and productivity. Increasing evidence, however, indicates that light functions not merely as illumination, but as a key biological signal regulating circadian rhythms, neuroendocrine pathways, behavior, welfare, and long-term production performance. This review provides a biological reappraisal of lighting management in chickens by synthesizing current evidence on how different lighting characteristics influence biological regulation and practical outcomes. A systematic literature review was conducted following PRISMA guidelines, with a qualitative synthesis approach adopted due to heterogeneity in study designs, lighting protocols, and outcome measures. Evidence was integrated across major lighting domains, including photoperiod duration, timing consistency, light intensity, spatial distribution, spectral composition, lighting technology, and stage-specific implementation. Emphasis was placed on identifying primary biological targets, expected production benefits, risks of mismanagement, and relevant monitoring indicators. The synthesized findings demonstrate that lighting management acts primarily through alignment with endogenous circadian and endocrine systems rather than isolated technical parameters. Lighting regimes that preserve circadian stability support sustainable productivity and animal welfare, whereas biologically inappropriate strategies may induce cumulative physiological stress and compromise long-term performance. This review highlights the need to reframe lighting management as a form of biological regulation to support data-driven and biologically informed production systems.
Alternative Feed Use in Poultry Chickens: Impacts on Feed Efficiency and Physiological Parameters—A Systematic Literature Review Oktariansyah, Yadi; Kamal, Mustafa
Journal of Natural Sciences Vol 7, No 1 (2026): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v7i1.1110

Abstract

Feed cost and supply instability remain major constraints in poultry production, particularly in smallholder and semi-intensive systems where local chickens are commonly raised. Alternative feeds derived from local resources and agro-industrial by-products have been promoted to reduce reliance on commercial rations, yet evidence regarding their effects on feed efficiency and physiological stability remains inconsistent. This systematic literature review synthesized controlled feeding trials evaluating the effects of alternative feeds on feed conversion ratio (FCR), growth performance, and physiological parameters in poultry chickens. A PRISMA-guided search was conducted using Scopus, Web of Science, PubMed, and Google Scholar, and 20 eligible studies were included in the qualitative synthesis. Evidence was categorized into agro-industrial by-products, plant leaf meals, high-fiber ingredients, fermented feeds, animal-based alternative proteins, antinutrient-rich plants, enzyme-supported diets, hybrid feeding strategies, and layer-phase alternative feeding. Feed efficiency responses were highly context-dependent. Neutral or improved FCR and stable growth were more likely when alternative feeds were used at moderate inclusion levels and supported by fermentation, enzyme supplementation, and adequate micronutrient premixes. In contrast, high inclusion of fibrous or antinutrient-rich ingredients frequently reduced efficiency and increased the risk of metabolic stress. Hybrid feeding strategies produced the most consistent outcomes.
Similaritas dan Korelasi Tumbuhan Invasif pada Tegakan Eksotik di Kawasan Lindung di Kawasan Lindung PT Musi Hutan Persada, Sumatera Selatan Huda, Muhammad Komarul; Setiawan, Arum; Oktariansyah, Yadi; Yustian, Indra; Setiawan, Doni; Pragustiandi, Guntur; Pranoto, Aidil Fitra
Journal of Natural Sciences Vol 7, No 1 (2026): Journal of Natural Sciences Maret
Publisher : Mahesa Research Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34007/jonas.v7i1.1087

Abstract

Invasive alien plants pose a major threat to biodiversity, particularly in conservation areas embedded within industrial plantation forest landscapes dominated by exotic species. This study aimed to analyze the composition and dominance of invasive plants, community similarity, and their correlations with Acacia mangium and Eucalyptus pellita stands in the Protected Area of PT Musi Hutan Persada, South Sumatra. Vegetation analysis was conducted using a nested quadrat sampling method across four stand types (control, A. mangium-dominated, E. pellita-dominated, and mixed stands), with 60 purposively selected plots. Data were analyzed using the Important Value Index (INP), Jaccard similarity index, and Spearman correlation. The results identified 20 invasive plant species, with Eleusine indica as the most abundant. A. mangium and E. pellita exhibited the highest INP at the tree stratum. Similarity analysis indicated variation in species composition, with a tendency toward community homogenization in some locations (≥0.80). Correlation analysis revealed that A. mangium was positively associated with Imperata cylindrica and Chromolaena odorata, while E. pellita was associated with Clidemia hirta and Piper aduncum. These findings highlight the ecological role of exotic stands in shaping the distribution patterns of invasive plants.
Co-Authors Amrillah Nugrasyah Arum Setiawan Arum Setiawan Ayu Safitri Cahyani, Riski Desitarani Doni Setiawan Elisa Nurnawati Febrian Hadinata Habiburrahman, Muhammad Hanum, Laila Harvianti, Yuniar Hary Widjajanti Huda, Muhammad Komarul Indra Yustian Iqbar, Muhammad Laila Hanum Masito, Masito Muhammad Ikhsan Mustafa Kamal Novira, Sandra Patricia, Margareth Pragustiandi, Guntur Pranoto, Aidil Fitra Putri, Cyntia Sabarani Putri, Ferta Liza Ramadhani, Audya Rahma Sarno . Zainal Fanani