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Holistic: Journal of Tropical Agriculture Sciences
Published by Institute for Advanced Science, Social, and Sustainable Future
ISSN : -     EISSN : 30254272     DOI : https://doi.org/10.61511/hjtas.v1i1.2023
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Ruang Lingkup HJTAS adalah jurnal ilmiah yang terbit secara periodik untuk mendorong pembangunan pertanian dalam arti luas dengan mendedikasikan pada artikel-artikel hasil penelitian yang berkualitas yang berguna bagi pembangunan masyarakat dan industri. Lingkup artikel meliputi pertanian dalam arti luas, seperti budidaya tanaman pangan, perkebunan, peternakan, perikanan, kehutanan, dan lainnya, serta kajian sosial ekonomi pertanian dan lingkungan hidup spesifik yang berhubungan dengan bidang pertanian. Jurnal ini menerima naskah baik dalam Bahasa Indonesia maupun Bahasa Inggris.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 32 Documents
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Climate change adaptation strategies among rice farmers in coastal agro-ecological systems Tuwu, Eka; Kandari, Aminuddin Mane; Erif, La Ode Muhammad; Gandri, La; Arfiani
Holistic: Journal of Tropical Agriculture Sciences Vol. 3 No. 2: January (2026)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/hjtas.v3i2.2026.2319

Abstract

Background: This study aims to identify the indicators and impacts of climate change experienced by rice farmers in Lawele Village, a coastal area of Buton Island, and to examine the structural and non-structural adaptation strategies they implement. The research also assesses farmers’ participation in government-led climate adaptation programs. Methods: A descriptive quantitative method was used, involving structured interviews with 30 purposively selected rice farmers. Data were gathered through questionnaires, field observations, and documentation, and analyzed using percentage-based tabulation to describe patterns of climate-related impacts and adaptive responses. Finding: All respondents (100%) reported direct impacts of climate change, including pest outbreaks, declining yields, and crop failure, as well as indirect impacts such as increased production costs and reduced income. Structural adaptation measures primarily involved the construction and maintenance of irrigation channels initiated by the government, with farmers contributing to their upkeep. Non-structural adaptations were practiced universally (100%), including fertilizer application and adjustments to cropping patterns to reduce pest pressure and maintain productivity. However, the adoption of pest-resistant improved varieties remained limited, with only 17 farmers (57%) using them, while 13 farmers (43%) had not, largely due to high seed prices, limited technical assistance, and the absence of continuous support programs. Participation in climate adaptation training was also low, with only 15 farmers (50%) having attended government-led extension activities. Conclusion: Climate change exerts significant direct and indirect pressures on rice farming in Lawele Village. Although farmers have adopted various adaptation strategies, their implementation is hindered by economic constraints, insufficient technical guidance, and limited engagement in training programs. Strengthening institutional support and providing sustained capacity-building initiatives are essential to enhancing the resilience of rice farming systems in this coastal, climate-vulnerable region. Novelty/Originality of this article: This article bridges the experiences of local farmers, adaptation strategies, and institutional participation gaps in the context of coastal rice farming, which has not been widely researched, by providing empirical evidence and insights relevant to policy.
Bitter leaf extract modulates antioxidant enzymes, immunoglobulins, organ weights, meat oxidation, and hepatic stress markers in broiler chickens exposed to aflatoxin B1 Oloruntola, Olugbenga David
Holistic: Journal of Tropical Agriculture Sciences Vol. 3 No. 2: January (2026)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/hjtas.v3i2.2026.2419

Abstract

Background: This study examined the effects of bitter leaf extract on the oxidative enzymes, stress markers, immunoglobulins, organ weights, meat oxidation, and liver health in broiler chickens exposed to aflatoxin-B1. Methods: 240 day-old mixed-sex Cobb-500 broiler chickens were randomly assigned to the following treatment groups: CONT (Control); BE0AF (0.5 mg/kg aflatoxin-B1); BE1AF (0.5 mg/kg aflatoxin B1 + 1 g bitter leaf powder/ L H2O)  or BE2AF (0.5mg/kg aflatoxin-B1 + 2 g bitter leaf powder/ L H2O), each with 60 chickens (6 replicates of 10 chickens). Findings: BE0AF significantly (P<0.05) lowered the serum superoxide dismutase (SOD) and higher malondialdehyde (MDA) levels compared to untreated chickens.  BE2AF resulted in similar MDA levels compared to chickens in the BE1AF and CONT groups. BE0AF group showed higher (P<0.05) lactate dehydrogenase (LDH) and lower catalase and glutathione peroxidase (GPx) levels than other groups. Immunoglobulin G levels were notably (P<0.05) lower in the BE0AF group, while immunoglobulins M and A were significantly (P<0.05) lower compared to the BE3AF and BE2AF groups. Liver and spleen weights were higher in the aflatoxin group, and meat catalase was lower (P<0.05) in BE0AF. Lipid and protein oxidation were higher (P<0.05) in BE0AF compared to CONT. Furthermore, liver HSP70, NF-κB, and LDH levels were higher (P<0.05) in BE0AF. Conclusion: Oral administration of bitter leaf extract of 1-2g/ L H2O bitter leaf powder mitigated oxidative stress and protected against aflatoxin-induced damage by improving various physiological markers in broiler chickens. Novelty/Originality of this article: This study was to assess the impact of bitter leaf aqueous extract on organ weights, immunoglobulin levels, serum biomarkers, meat oxidation, hepatic oxidative enzymes, and nuclear factor kappa B in broiler chickens exposed to AFB1.

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