Shiraz UniversityIran Agricultural Research1013-988543120241201Colostrum and blood oxidative stress indices: Effects on growth performance and health in neonatal Holstein calvesشاخص تنش اکسیداتیو آغوز و خون: اثر بر عملکرد رشد و سلامت گوساله های تازه متولد شده هولشتاین18768110.22099/iar.2024.50026.1590ENSolmazNamdariDepartment of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. IranMohammadDadpasandDepartment of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. IranShahryarKargarDepartment of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. IranMohammadrezaJafarzadeh ShiraziDepartment of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. IranAmirAkhlaghiDepartment of Animal Science, School of Agriculture, Shiraz University, Shiraz, I. R. IranJournal Article20240424This research evaluated the blood and colostrum oxidative stress index (OSi) in newborn Holstein calves and its potential correlations with nutrient intake, growth performance, skeletal development, diarrhea, and pneumonia. Eighty-three neonatal Holstein calves were categorized based on their blood and consumed colostrum OSi levels. There were four treatment groups, i.e., 25 calves consumed low OSi colostrum that had low OSi in the blood taken 24-h after first meal consumption of colostrum (LL), 17 calves consumed low OSi colostrum that had high OSi in the blood (LH), 22 calves consumed high OSi colostrum that had low OSi in the blood (HL), and 19 calves consumed high OSi colostrum that had high OSi in the blood (HH). Upon categorization, the performance and health outcomes of the calves were thoroughly assessed. The results revealed no significant disparities among the treatment groups regarding nutrient intake and skeletal growth. Initial and final body weights, average daily gain (ADG), and feed efficiency had no observable differences. However, substantial differences were evident in the incidence of diarrhea (HH vs. LH, HL vs. LL, and LH vs. LL), pneumonia occurrence (HH vs. LH), and the number of days with body temperatures higher than 39.4 °C were similar across all groups. Moreover, a significant variation was noted in the duration of diarrhea, with the LL group experiencing more days under medication than the other treatment groups. Pronounced variations in calf health, particularly regarding diarrhea and pneumonia, suggesting a potential association between oxidative stress and specific health outcomes in newborn Holstein calves.https://iar.shirazu.ac.ir/article_7681_3b61523e0a215dac11bdb83a1887fcb9.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Identification of optimal and suitable sites for pistachio orchard replacement using spatial overlaying methods in GIS: A case study in West Azerbaijan, Iranشناسایی مناطق بهینه و مناسب برای جایگزینی باغهای پسته با استفاده از روشهای تلفیق فضایی در سامانه اطلاعات جغرافیایی (GIS): مطالعه موردی در آذربایجان غربی، ایران”917768610.22099/iar.2024.49864.1581ENRezaRezaeeAgronomical and Horticultural Research Department, West Azerbaijan Agriculture and Natural Resources Research and Education Center, Urmia, I. R. IranBehzadHessariDepartment of Water Engineering, Faculty of Agriculture and Urmia Lake Research Institute, Urmia University, Urmia, I. R. IranFaezeheJahangiriDepartment of Water Engineering, Urmia University, Urmia, I. R. IranJournal Article20240404Replacing regular high-water-consuming crops with tree species tolerant to salinity and drought, such as pistachio, has been suggested to reduce social and economic crises around Urmia Lake in the West Azerbaijan province of Iran, which has been negatively impacted by climate change and water resource mismanagement. In the current study, to determine suitable sites for pistachio production, the climatic requirements of the pistachio tree were determined, and relevant data, including a map of land use, soil type and limiting factors (salinity), average temperature, relative humidity, elevation, slope maps, and layers were collected from local meteorological and agriculture administrations. All data were prepared as grid surfaces and raster layers in GIS to produce digital layers of individual factors. A spatial overlaying analysis was used to assign weights to each variable in each layer cell, and finally, suitable sites were determined with overlay analysis. According to the results, there are potentially about 195 thousand hectares of relatively suitable areas in different regions of the province. However, considering the restricted water sources at the study site, it is recommended that the extension of pistachio orchards be targeted and timed based on maximizing profit and minimizing the use of water resources. Moreover, it should mainly focus on replacing worn-out and non-economical units and high water-demanding crops (approximately 30,000 hectares). To validate the results, all previously cultivated areas were collected and compared with targeted suitable regions, indicating that about 90.42% of pistachio orchards in the province are in suitable areas for pistachio cultivation. Buffer zone areas of Urmia Lake are among the most suitable areas. Eventually, the area under the Receiver Operating Characteristic curve related to observed fields was 0.92, which demonstrates high performance in targeting suitable areas. https://iar.shirazu.ac.ir/article_7686_b777ef9523f2c778a1a9a9eaaca21501.pdfShiraz UniversityIran Agricultural Research1013-988543120241201First report of aspergillus sydowii ASP17 as a promising biological control agent against soil-borne fungal and fungal-like plant pathogens: A laboratory studyاولین گزارش از Aspergillus sydowii ASP17 بهعنوان یک عامل مهارزیستی امیدبخش در برابر بیمارگرهای قارچی و شبهقارچی گیاهی خاکزاد: یک مطالعه آزمایشگاهی1825770510.22099/iar.2024.51074.1631ENRezaGharinDepartment of Plant Protection, School of Agriculture, Shiraz University, Shiraz, I. R. IranMaryamMirtalebiDepartment of Plant Protection, School of Agriculture, Shiraz University, Shiraz, I. R. IranAkbarKaregarDepartment of Plant Protection, School of Agriculture, Shiraz University, Shiraz, I. R. IranJournal Article20240825This study aimed to investigate the antagonistic properties of the <em>Aspergillus sydowii</em> ASP17 isolate against soil-borne fungal and like-fungal pathogens including <em>Rhizoctonia solani</em>, <em>Phytophthora nicotianae</em>, and <em>Pythium aphanidermatum</em> under in vitro experiments. The results showed that <em>A. sydowii </em>ASP17 inhibited 57.4% growth of <em>R. solani</em>, 45.4% of <em>P. nicotianae</em>, and 53.3% of <em>P. aphanidermatum </em>in a dual culture test<em>.</em> In the second experiment, <em>A. sydowii</em> ASP17 showed inhibition rates of 72.7% for <em>R. solani</em>, 45.9% for <em>Ph. nicotianae</em>, and 56% for <em>P. aphanidermatum</em>. The highest efficacy in the dual culture test was observed against <em>R. solani</em>, but in the volatile organic compounds test, the highest efficacy was against <em>P. aphanidermatum</em>. The ASP17 isolate acted by antibiosis by forming inhibition zones caused by the antifungal substances without contact with the pathogen. This study also investigated the production of volatile organic compounds, hydrogen cyanide, and the cell wall-degrading enzymes protease and lipase, which may be related to the biocontrol activity of the isolate. The production of hydrogen cyanide was also examined in the <em>A. sydowii</em> ASP17 isolate. These data could support the potential use of <em>A. sydowii</em> ASP17 as a biocontrol agent in agriculture, especially in environments where the use of chemical fungicides is undesirable. https://iar.shirazu.ac.ir/article_7705_2db5ae68ebdf42e13ec52ceb2ce53859.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Understanding the network dynamics of sustainable community-based ecotourism in Lorestan, Iranدرک پویایی شبکه بومگردی اجتماعمحور پایدار در لرستان، ایران2643773910.22099/iar.2024.50524.1612ENFereshtehHafeziDepartment of Agricultural Extension and Education, College of Agriculture, Tarbiat Modares University (TMU), Tehran, I. R. Iran.MasoudBijaniDepartment of Agricultural Extension and Education, College of Agriculture, Tarbiat Modares University (TMU), Tehran, I. R. Iran.SaeedGholamrezaiDepartment of Agricultural Economics and Rural Development, College of Agriculture, Lorestan University (LU), Lorestan, I. R. IranMoslemSavariDepartment of Agricultural Extension and Education, Khuzestan University of Agricultural Sciences and Natural Resources, Mollasani, I. R. Iran.SabinePanzer-KrauseDepartment of Geography, University of Hildesheim, Hildesheim, Germany.Journal Article20240621Since many key actors intervene in providing services and meeting the needs of ecotourism and local communities, it is necessary to identify their position, cooperation and communication in order to strengthen interests, plan and empower organizational interactions and provide the needs and services of ecotourists and local people. Based on this, the purpose of this research was to analyze the network of sustainable community-based ecotourism (SCBET) actors. In this regard, from key informants in 20 responsible organizations in SCBET in Lorestan province, Iran, through purposeful snowball sampling, the necessary information was collected through a network analysis questionnaire and through social network analysis (SNA), UCINET and NetDraw software were analyzed. The results were extracted six dimensions of sustainability (management, environmental, economic, social, political and cultural) based on micro-level indicators (in-degree centrality, out-degree centrality, eigenvec centrality, closeness centrality (proximity) and betweenness centrality) and the diagrams of the networks of the mentioned dimensions of 20 key actors were drawn. The results obtained in the form of SNA can help tourism policy makers and decision makers to identify the challenges facing ecotourism and to analyze the various relationships between actors and stakeholders (private sectors, government and local communities).https://iar.shirazu.ac.ir/article_7739_7e5df234f371484d64afd072298a126e.pdfShiraz UniversityIran Agricultural Research1013-988543120241201New electrospun nanofiber based on grass pea protein isolate (Lathyrus sativus L.) for the food and biomedical applicationsنانوالیاف الکتروریسی شده جدید حاوی ایزوله پروتئین خلر (Lathyrus sativus L.) برای کاربردهای غذایی و زیست پزشکی4451774010.22099/iar.2024.50869.1620ENMarziyehRezaeiDepartment of Food Science and Technology, School of Agriculture, Ferdowsi University of Mashhad, Mashhad, I. R. IranNasserSedaghatDepartment of Food Science and Technology, School of Agriculture, Ferdowsi University of Mashhad, Mashhad, I. R. IranSaraHedayatiNutrition Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, I. R. IranMohammad-TaghiGolmakaniDepartment of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, I. R. IranJournal Article20240731In the present study, new protein nanofibers were produced from grass pea (<em>Lathyrus sativus</em> L.) protein isolate and polyvinyl alcohol. Different ratios of grass pea protein isolate and polyvinyl alcohol (100:0, 80:20, 60:40, 40:60, 20:80, and 0:100) were mixed, and the nanofibers were produced by the electrospinning process. First, the properties of spinning solutions, including viscosity, electrical conductivity, and surface tension were examined, then the morphological, thermal, and mechanical properties of the electrospun nanofibers were investigated. By increasing the amount of grass pea protein isolate, the viscosity decreased, but the electrical conductivity and surface tension increased from 683 to 1108 µS/cm and 52 to 76 mN/m, respectively. SEM image analysis showed that the nanofibers containing up to 60% protein content had a bead-free and uniform structure with an average diameter of 138.43 nm. The FTIR analysis results suggested the effective fabrication of the hybrid nanofibers. The XRD patterns indicated a reduction in the crystallinity of composite nanofibers compared to polyvinyl alcohol. These new electrospun nanofibers have the potential to create films incorporating bioactive compounds, acting as functional food products.https://iar.shirazu.ac.ir/article_7740_077810966419e82efda027a4d9be4f59.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Farmers’ intention to apply agricultural e-commerce: Extending the Technology Acceptance Model (TAM) with perceived enjoyment and perceived e-commerce self-efficacyنیت کشاورزان برای بکارگیری تجارت الکترونیک کشاورزی: توسعه مدل پذیرش فناوری (TAM) با لذت ادراک شده و خودکارآمدی تجارت الکترونیک ادراک شده5261775910.22099/iar.2024.50241.1603ENRahaZareiDepartment of Agricultural Extension and Education, School of Agriculture, Shiraz University, Shiraz, I. R. IranGholam-HosseinZamaniDepartment of Agricultural Extension and Education, School of Agriculture, Shiraz University, Shiraz, I. R. IranHamidKarimiDepartment of Agricultural Extension and Education, Faculty of Agriculture, University of Zabol, Zabol, I. R. IranPouriaAtaeiDepartment of Socio-Economic and Agricultural Extension Research, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education & Extension Organization (AREEO), I. R. Shiraz, IranJournal Article20240519E-commerce can play an increasingly strong role in boosting agricultural development. This study aimed to understand citrus growers’ behavioral intention to apply agricultural e-commerce. The research used a cross-sectional survey of Jahrom citrus growers in Iran. So, 360 citrus growers were selected to participate in this study, and data were collected with a structured questionnaire. All the hypotheses relating to the Technology Acceptance Model (TAM) components, and those relating to the extended TAM were supported. Attitude, perceived e-commerce self-efficacy, perceived usefulness, perceived enjoyment, and perceived ease of use were the most important variables influencing citrus growers’ behavioral intention. Improving farmers’ agricultural e-commerce attitudes and skills through training programs and establishing stability in the market seems to be a useful strategy to develop their intention to use agricultural e-commerce.https://iar.shirazu.ac.ir/article_7759_0c9f0a3c0ad010a210d86ffdfbd6f175.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Comparative analysis of trait associations in wheat: Insights from irrigated and drought stress cropping systemsتحلیل مقایسهای روابط بین صفات در گندم: یافتههای حاصل از سیستمهای کشت آبی و تنش خشکی6271777610.22099/iar.2024.50485.1610ENHamidrezaNooryazdanDepartment of Production Engineering and Plant Genetics, Faculty of Agricultural Engineering, Persian Gulf University, Bushehr, I. R. IranJournal Article20240615Breeders need to understand how traits relationship help create effective breeding programs. An investigation involving eight wheat cultivars was carried out to assess trait relationships in the climate of Dashtestan County, Bushehr province (Iran). The experiment included both irrigated and drought stress conditions during the 2023-2024 cropping season. Statistical techniques, including the Pearson correlation and factor analysis, were employed to analyze the data collected from the two contrasting growing conditions. The correlation patterns among wheat traits varied significantly between irrigated and drought stress systems. However, traits related to the yield, such as tiller number per plant, spikelet number, and grain number per spike, showed a positive correlation with the grain yield in both conditions. Under irrigated cultivation conditions, factor analysis identified four key factors influencing crop yields. These factors, presented in descending order of significance, were agronomic and yield potential, yield components, phenology, and the tiller number per plant. Based on these findings, the Chamran cultivar showed high potential for cultivation under irrigated conditions. Under drought stress conditions, factor analysis identified four main patterns that accounted for 86.3% of the variation observed in the traits. The analysis revealed four essential factors that significantly influenced the crop yield. These factors, presented in descending order of importance, were plant yield, plant structure, reproductive traits, and flag leaf length and phenology.https://iar.shirazu.ac.ir/article_7776_db911601caf1c2ecfc4b150452e052c4.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Evaluating the Effectiveness of Various Herbicides for Managing Broadleaf Weeds in Faba Bean (Vicia faba L.)ارزیابی اثربخشی علفکشهای مختلف برای مدیریت علفهای هرز پهن برگ در باقلا (.Vicia faba L)7279778510.22099/iar.2024.49839.1580ENAbdolrezaAhmadiDepartment of Agroecology, Faculty of Agriculture, Lorestan University, Khorramabad, I. R. IranSaeedShahbaziSafiabad Agricultural and Natural Resources Research Center, Dezfoul, I. R. IranYousefFilizadehDepartment of Agronomy, Shahed University, Tehran, I. R. IranJournal Article20240613Faba bean growth and yield are constrained by weeds. Thus, field experiments were conducted in Khorramabad, Iran in 2020-2021 to evaluate the effect of trifluralin 960 g ai ha<sup>–1</sup> pre-plant applications (PPI), imazethapyr 100 g ai ha<sup>–1 </sup>pre-plant applications (PPI), imazethapyr 100 g ai ha<sup>–1 </sup>plus one hand weeding (OHW), imazethapyr100 g ai ha<sup>–1</sup> POST (post-emergence herbicide), bentazon 960 g ai ha<sup>–1 </sup>POST, oxyflorfen 192 g ai ha<sup>–1</sup> preemergence (PRE), oxyflorfen PRE + OHW, diclosulam 21 g ai ha<sup>–1</sup> PRE, diclosulam PRE plus OHW, one or two hand weeding on weed control and yield in faba bean. Weeds, such as safflower, wild mustard, cow cockle, and three-horn bedstraw were dominant in both years. Weed biomass in uncontrolled plots was 173 g m<sup>-2</sup> in 2020 and 145 g m<sup>-2</sup> in 2021. The lowest weed biomass was observed in diclosulam PRE + OHW, bentazon POST, and two hand weeding treatments. Imazethapyr PPI, trifluralin PPI, and imazethapyr POST herbicides negatively affected faba bean yield. In 2020 and 2021, Diclosulam + OHW decreased total weed density by 85% and 82%, respectively, compared to the untreated sample (control). These ideas resulted in 53% and 61% yield reductions in the weedy check plots compared to the weed-free control plots in 2020 and 2021, respectively. All herbicides resulted in minor damage to the beans, with diclosulam and OHW + diclosulam exhibiting the least impact.https://iar.shirazu.ac.ir/article_7785_eededd92fd1e30210d4e0145f9e22940.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Revolutionizing agricultural residue burning behavior with virtual training: Exploring the Transtheoretical Modelتغییر رفتار آتش زدن بقایای زراعی با استفاده از آموزش مجازی: بررسی مدل فراتئوری تغییر8090779810.22099/iar.2024.49937.1587ENNaserNaseriDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranShahparGeravandiDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranFarahnazRostamiDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranJournal Article20240412Most of the research conducted on the Transtheoretical Model (TTM) of Change has focused on health and psychological issues, with limited application in the context of agricultural and environmental behavior change. However, in this innovative study, the effectiveness of interventionist virtual education in changing the behavior of burning crop residues was examined using the behavior change theory. The research employed an experimental design and a quasi-experimental pre-test/post-test design with a control group. The statistical population consisted of 400 wheat farmers, and a sample of 120 participants was selected using purposive sampling. Data were collected through a researcher-made questionnaire and analyzed using SPSS software. The questionnaire comprised four constructs: self-efficacy, the process of change, decisional balance, and stages of behavior change. The findings of this study demonstrate that virtual education based on the TTM can pave the way for effectively managing agricultural residues by enhancing self-efficacy, decision balance, and stages of behavior change. Moreover, the results highlight the broader applicability of the TTM beyond the domains of health and psychological pathology. It can be effectively utilized to address environmental behaviors, such as agricultural residue management. Consequently, it is recommended that researchers and planners incorporate the TTM in behavior change programs, transform the traditional perspective on agricultural education, and leverage virtual education as a complementary approach to formal education.https://iar.shirazu.ac.ir/article_7798_c01655666ecf2fe21869554bb3204c73.pdfShiraz UniversityIran Agricultural Research1013-988543120241201OECD Water Governance Principles on the local scale: Using mixed method in local water resources management reviewاصول حاکمیت آب OECD در مقیاس محلی: استفاده از روش ترکیبی در بررسی مدیریت منابع آب محلی91101780710.22099/iar.2024.50927.1623ENHassanKakavandDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranFarahnazRostamiDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranMaryamTatarDepartment of Agricultural Extension and Education, Faculty of Agriculture, Razi University, Kermanshah, I. R. IranJournal Article20240807The main purpose of this study is to examine how the OECD water governance principles fit with actual water governance at the local scale. First, this paper will focus on using the OECD index as a benchmark for progress in implementing water governance relevant to the selected catchment area. Second, it specifically advances the OECD agenda to describe the experience of local water governance in Iran. Based on the main research objective, this study is considered an exploratory strategy. As it involves conducting a survey and qualitative study to gain deeper insight in to the research objective. Local elites come together and discuss how the lack of appropriate scale, lack of data and information sharing, lack of financing, mistrust and corruption cause water management problems over time. We expect that this study will inspire further analysis of water governance at the local level. We also expect that the approaches presented in this study will serve as a resource for developing further research on local water governance and supporting local water governance in order to develop frameworks for implementing the OECD principles at the local level.https://iar.shirazu.ac.ir/article_7807_906c493f54b92d3f7a40ef04d8fe72e3.pdfShiraz UniversityIran Agricultural Research1013-988543120241201Rigorous Review of "Is Blockchain a Reliable Technology in the Agricultural Supply chain?"بررسی دقیق "آیا بلاک چین یک فناوری قابل اعتماد در زنجیره تامین کشاورزی است؟"102120781310.22099/iar.2024.51044.1630ENHanieh SadatFattahzadehDepartment of Information and knowledge science, Science and Research Branch, Islamic Azad University, Tehran, I. R. IranNadjlaHaririDepartment of Information and knowledge science, Science and Research Branch, Islamic Azad University, Tehran, I. R. IranShahabBehjatiDepartment of Computer Science, Malek Ashtar University, Tehran, I. R. IranJournal Article20240822The blockchain mechanism offers a promising and versatile solution with the potential to benefit various fields of knowledge and industry. Currently, blockchain technology is advancing in sectors such as agriculture, medicine, tourism, and education. However, while its design and implementation provide notable advantages, they also come with certain weaknesses, as well as unique opportunities and challenges. This research aims to identify key blockchain indicators within the agricultural supply chain and to assess its strengths and limitations in this context. To achieve these objectives, we conducted a comprehensive review of scientific articles on blockchain applications in the agricultural supply chain. From a broad collection of articles published between 2012 and 2024, 130 were selected through the Meta-synthesis method. Within these articles, we identified and categorized 124 relevant blockchain indicators affecting the agricultural supply chain. Given the specific challenges and limitations blockchain faces in this sector, we also sought to identify the barriers to its adoption in agricultural supply chains. Our review highlighted various issues and opportunities associated with blockchain implementation in this context. The collected information was then analyzed using the SWOT method, revealing 8 strengths, 4 weaknesses, 4 opportunities, and 3 significant threats in implementing blockchain within the agricultural supply chain.https://iar.shirazu.ac.ir/article_7813_034c6df4b17b78277f13771de8e5f778.pdfShiraz UniversityIran Agricultural Research1013-988543120241201A new alternative animal feed by lipid extraction from fish by-products enriched with algae extractsخوراک جدید با روغن استخراج شده از محصول جانبی ماهی غنی شده با عصاره جلبک121130781410.22099/iar.2024.51249.1635ENNesaMousavipourDepartment of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, I. R. IranSedighehBabaeiDepartment of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, I. R. IranMarziyehMoosavi-NasabDepartment of Food Science and Technology, School of Agriculture, Shiraz University, Shiraz, I. R. Iran.
Seafood Processing Research Center, School of Agriculture, Shiraz University, Shiraz, I. R. Iran.ZaferCeylanBartın University, Science Faculty, Department of Molecular Biology and Genetics/Biotechnology, Bartın, TürkiyeJournal Article20240920The current study investigated the effect of hot water extracts from <em>Sargassum</em> sp. and <em>Padina</em> sp. macroalgae in preventing the oxidation of oil extracted from rainbow trout waste over 42 days at 30 °C. The treatments were fish oil without preservatives (control: C), fish oil containing 100 ppm butylated hydroxytoluene (BHT), fish oil with 1000 ppm <em>Sargassum</em> sp. extract, and fish oil with 1000 ppm <em>Padina</em> sp. extract. The extraction yields, DPPH radical scavenging activity, and total phenolic content of Sargassum extract were higher than those of Padina extract by 10.4%, 86%, and 28%, respectively. On the 35<sup>th</sup> day, the peroxide values (PV) of the fish oil treated with Sargassum and Padina extracts were similar to the control group, with values of 33.7 and 34.3 meq O<sub>2</sub>/kg, respectively. However, p-anisidine values in the control samples increased significantly (<em>P</em> < 0.05) over the 42 days compared to the other groups. Total oxidation (TOTOX) and free fatty acid (FFA, expressed as oleic acid) values of the fish oils treated with Sargassum and Padina extracts were significantly lower than those of the control samples (<em>P</em> < 0.05). Additionally, UV<sub>232</sub> absorbance values were higher in the control group compared to the samples treated with macroalgae extracts. Color difference (ΔE) and whiteness index (WI) values remained within acceptable ranges for all samples. These findings, particularly the promising effects of Sargassum extract, suggest its potential as a natural preservative in fish oil, offering valuable insights for future studies.https://iar.shirazu.ac.ir/article_7814_6d6c07d2adecc7ae9c83c27638934f62.pdf