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2025

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Correlation Between Sensory And Instrumental Textural Attributes Of Date Palm (Phoenix Dactylifera L.) Fruits: Technical Note, Vandita Singh, Mohammad Shafiur Rahman, Nejib Guizani, Hakikulla Shah Apr 2025

Correlation Between Sensory And Instrumental Textural Attributes Of Date Palm (Phoenix Dactylifera L.) Fruits: Technical Note, Vandita Singh, Mohammad Shafiur Rahman, Nejib Guizani, Hakikulla Shah

Journal of Agricultural and Marine Sciences

Food industries are looking for the suitable instrumental methods that estimate consistently sensory textural qualities of food products. Monitoring texture using instrumental methods is cheaper over time than maintaining a sensory quality panel. Therefore, a good relation between sensory and instrumental textural attributes could be highly beneficial. Earlier the sensory and instrumental texture profile analysis (TPA) of date fruits were published. In the present research, we aimed to report the relation between instrumental and sensory textural attributes of date fruit varieties. Instrumental TPA and sensory textural attributes were correlated. We found significant correlations between sensory and instrumental TPA attributes of …

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Role Of Grapevine Rootstocks In Mitigating Environmental Stresses: A Review, M. Mumtaz Khan, Muhammad Tahir Akram, Rashad Waseem Khan Qadri, Rashid Al-Yahyai Apr 2025

Role Of Grapevine Rootstocks In Mitigating Environmental Stresses: A Review, M. Mumtaz Khan, Muhammad Tahir Akram, Rashad Waseem Khan Qadri, Rashid Al-Yahyai

Journal of Agricultural and Marine Sciences

Viticulture is one of the most important crop industry in the world and its cultivation is on the upward trend globally. Global water and soil resources continue to decline sharply and rampant extreme weather conditions are making serious threat to sustainable agriculture and food security. Further, the changes in climatic conditions are increasingly becoming favorable for rearing certain harmful biotic organisms which are hostile to sustained grapes and other crop cultivation. The environmental changes have shown a projected impact on viticulture through increased biotic and abiotic stresses. Range of strategies can be employed to mitigate such scenarios, however integration of …

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In Vitro Antagonistic Potential, Plant Growth-Promoting Activity And Indole-3-Acetic Acid Producing Trait Of Bacterial Isolates From Spent Mushroom Substrate Of Agaricus Bisporus, Rethinasamy Velazhahan, Shima Nasser Hamed Al-Mamari, Abdullah Mohammed Al-Sadi, Issa Hashil Al-Mahmooli, S. P. Sathish Babu Apr 2025

In Vitro Antagonistic Potential, Plant Growth-Promoting Activity And Indole-3-Acetic Acid Producing Trait Of Bacterial Isolates From Spent Mushroom Substrate Of Agaricus Bisporus, Rethinasamy Velazhahan, Shima Nasser Hamed Al-Mamari, Abdullah Mohammed Al-Sadi, Issa Hashil Al-Mahmooli, S. P. Sathish Babu

Journal of Agricultural and Marine Sciences

Spent mushroom substrate (SMS) is widely used as fertilizer and to control plant diseases. The microorganisms surviving in SMS play a crucial role in plant growth promotion and biocontrol properties of SMS. In this study, an effort was made to isolate and characterize the bacterial species present in the SMS of Agaricus bisporus and to study their antagonistic potential, plant growth-promoting ability and indole-3-acetic acid (IAA) producing trait. Six different bacterial isolates exhibiting morphological variabilities were obtained from the SMS by serial dilution technique. On the basis of 16S rRNA gene sequences, these isolates were identified as Staphylococcus epidermidis (Sh1 …

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Effect Of Storage Time On The Quality Of Smoked Heteroclarias, Ayodeji Ahmed Ayeloja, W. A. Jimoh, T. O. Uthman, M. O. Shittu Apr 2025

Effect Of Storage Time On The Quality Of Smoked Heteroclarias, Ayodeji Ahmed Ayeloja, W. A. Jimoh, T. O. Uthman, M. O. Shittu

Journal of Agricultural and Marine Sciences

Effect of storage time on the quality of smoked heteroclarias was studied. 108 samples of heteroclarias (average weight 210 + 15g) was used. Analysis carried out include: proximate, mineral composition (Ca, Na, Fe and Mg), biochemical, amino acid and sensory evaluation. Data obtained was subjected to Analysis of Variance (ANOVA) while the sensory data was subjected to nonparametric test (Kruskal Wallis test). Smoked heteroclarias have good nutritional quality in terms of proximate, mineral and amino acids all of which decrease with increase in duration of storage at ambient temperatures. Glutamic acid was the most predominant amino acid and the highest …

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Sideroxylon Mascatense: A New Crop For High Elevation Arid Climates?, Eric Hopkins, Rashid Al Yahyai Apr 2025

Sideroxylon Mascatense: A New Crop For High Elevation Arid Climates?, Eric Hopkins, Rashid Al Yahyai

Journal of Agricultural and Marine Sciences

This paper reviews the existing research on Sideroxylon mascatense, and provides an argument for being considered a fruit crop in cultivated production systems in the Sultanate of Oman and elsewhere. Climate change due to global warming has adverse effects on the agro-ecosystems of mountain regions in marginal climate zones. For example, in the Western Hajar Mountains of Oman, yields of the temperate fruit crops have decreased in recent years as temperature and other climate anomalies have increased. Other fruit-bearing wild plants have also been impacted by extreme weather fluctuations, particularly those that occupy a narrow altitudinal range. One such plant …

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Editorial, Shafiur Rahman Apr 2025

Editorial, Shafiur Rahman

Journal of Agricultural and Marine Sciences

Editorial

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Feed Intake In Atlantic Salmon Fed With Or Without Surface Spreading Of Feed, Turid Synnøve Aas, Trine Ytrestøyl, Torbjørn Åsgård, Kristoffer Rist Skøien, Morten Omholt Alver, Jo Arve Alfredsen Apr 2025

Feed Intake In Atlantic Salmon Fed With Or Without Surface Spreading Of Feed, Turid Synnøve Aas, Trine Ytrestøyl, Torbjørn Åsgård, Kristoffer Rist Skøien, Morten Omholt Alver, Jo Arve Alfredsen

Journal of Agricultural and Marine Sciences

In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in the fish. However, the impact on the feed pellets during spreading results in feed loss due to pellet breakage. In this study, feed intake, growth and signs of aggressive behavior was compared in salmon fed without or with spreading of the feed on the surface area of the tanks. Atlantic salmon (Salmo salar) with initial body weight 0.6 kg were kept in 3.3 m 3 tanks supplied with sea water (salinity 32 %, …

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Use Of Soil-Structured Capillary Barrier Can Mitigate The Impact Of Saline-Irrigation Water On Marigold Grown Under Field Condition, Mohammed Said Al-Mazroui, Rashid Al-Yahyai, Said Al-Ismaily, Anvar Kacimov, Hamed Al-Busaidi Apr 2025

Use Of Soil-Structured Capillary Barrier Can Mitigate The Impact Of Saline-Irrigation Water On Marigold Grown Under Field Condition, Mohammed Said Al-Mazroui, Rashid Al-Yahyai, Said Al-Ismaily, Anvar Kacimov, Hamed Al-Busaidi

Journal of Agricultural and Marine Sciences

Capillary barriers (CBs) as engineered porous composites is novel and promising technology for mitigating salinity and drought stress of plants. This study aimed to imitate a naturally formed CB structure recently discovered in the reservoir bed of Al-Khoud dam at the Governorate of Muscat in northern Oman and to test the impact of this unique CB on mitigating the salinity stress of marigold plants grown under an open field condition. A plot was constructed and divided into “structured” (engineered cascade CB design) and “unstructured” soils and planted with marigold (Tagetes erecta) plants that were subjected to four salinity treatments (control …

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Consumers’ Preference And Behaviour Pattern Towards Fresh And Smoked Catfish In Ilorin Metropolis, Nigeria, Wasiu Adeyemi Jimoh Apr 2025

Consumers’ Preference And Behaviour Pattern Towards Fresh And Smoked Catfish In Ilorin Metropolis, Nigeria, Wasiu Adeyemi Jimoh

Journal of Agricultural and Marine Sciences

Consumers’ preference study allows industries to tailor the supply towards the preference of consumers so that market could be optimized for their turn-over and profits. This study investigated consumers’ preference of fresh and smoked catfish in Ilorin Metropolis. A total of 225 questionnaires were administered adopting multi-stage techniques to elicit information from the respondents. The obtained data were subjected to descriptive and inferential statistics. The results showed that majority of the respondents in this study preferred smoked catfish irrespective of their socio-economic profile. The majority of the respondents agreed with the factors used in this study for the preference of …

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Book Review, Nejib Guizani Apr 2025

Book Review, Nejib Guizani

Journal of Agricultural and Marine Sciences

Book Review

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Fish Consumption And Knowledge Of Chemical Pollutants Among A Sample Of New Mothers In Tripoli, Libya, Thuraya A. Abuhlega, Huria M. Maamar Apr 2025

Fish Consumption And Knowledge Of Chemical Pollutants Among A Sample Of New Mothers In Tripoli, Libya, Thuraya A. Abuhlega, Huria M. Maamar

Journal of Agricultural and Marine Sciences

Fish and fish products are important sources of nutritional elements, especially iodine and unsaturated fatty acids (omega-3). These are essential for pregnant women and their embryos during a pregnancy period. However, women and their embryos may be exposed to chemical pollutants when they consume fish. Therefore, this study aimed to assess the consumption pattern of fish during pre-pregnancy, pregnancy and post-pregnancy periods, and explore the awareness on the chemical pollutants in fish among the women who recently gave birth in Tripoli city, Libya. This study targeted 370 women randomly in Tripoli city and collected data through a face to face …

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Evaluation Of Greenhouse Cucumber Production Sustainability In Terms Of Energy Use Efficiency, Nawal Khamis Al-Mezeini, Abdulrahim M. Al-Ismaili, Said M. Tabook Apr 2025

Evaluation Of Greenhouse Cucumber Production Sustainability In Terms Of Energy Use Efficiency, Nawal Khamis Al-Mezeini, Abdulrahim M. Al-Ismaili, Said M. Tabook

Journal of Agricultural and Marine Sciences

Sustainable agricultural production could be assessed through energy-use efficiency (EUE). Thus, this paper aims to evaluate the EUE for cucumber greenhouse production in Oman. Data were obtained by interviewing farmers (face-to-face). Result indicated that total energy inputs (e.g. electricity, water, fertilizers and agrochemicals) and total energy output (cucumber yield) were 1159726.0 MJ ha-1 and 89942.9 MJ ha-1, respectively. The highest energy consuming input in the greenhouse production was electricity, consuming 88% of total energy input. This indicates that electricity had again the highest impact in cucumber greenhouse production and 99% of electricity goes for cooling the greenhouse. When all energy …

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Effect Of Processing Methods On Consumer's Acceptability And Proximate Composition Of Yellow Croaker (Larimichthys Polyactis), Ayodeji Ahmed Ayeloja, F. O.A. George, W. A. Jimoh, S. A. Abdulsalami Apr 2025

Effect Of Processing Methods On Consumer's Acceptability And Proximate Composition Of Yellow Croaker (Larimichthys Polyactis), Ayodeji Ahmed Ayeloja, F. O.A. George, W. A. Jimoh, S. A. Abdulsalami

Journal of Agricultural and Marine Sciences

Effect of processing methods on consumer’s acceptability and proximate composition of yellow croaker was investigated. The experiment was completely randomized design where the treatments were the various processing methods employed. 12kg frozen yellow croaker fish were purchased, cut into chunks, divided into 4 groups of 3kg each, each group was salted and then subjected to different processing methods including: sun drying, deep- frying, solar drying and smoking. After processing, the products were subjected to organoleptic assessment using hedonic scale while the proximate composition was determined using standard experimental procedures. The result of this study indicates that the odour and flavour …

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Improving Solanine Production In In Vitro Cultures Of Solanum Nigrum L. Using Different Chemical And Physical Factors, Mu,Ad A. Al-Kiyyam, Rida A. Shibli, Reham W. Tahtamouni, Tamara S. Alqudah, Bashaer B. Abu-Iramaileh Apr 2025

Improving Solanine Production In In Vitro Cultures Of Solanum Nigrum L. Using Different Chemical And Physical Factors, Mu,Ad A. Al-Kiyyam, Rida A. Shibli, Reham W. Tahtamouni, Tamara S. Alqudah, Bashaer B. Abu-Iramaileh

Journal of Agricultural and Marine Sciences

Solanum nigrum L. is a medicinal plant of solanaceae family with distinguished therapeutic properties. Traditionally, S. nigrum. had been used as an anti-tumorgenic, antioxidant, hepatoprotective, diuretic, and antipyretic agent. The most important alkaloid member in this plant is solanine. Therefore, this study was conducted to utilize tissue culture techniques for the enhancement of solanine production in the in vitro grown cultures of this promising neglected plant. For callus growth and development experimental part, the highest callus growth parameters (callus diameter (21.4 mm) and callus fresh weight (2202.4 mg) were obtained in callus grown on Murashige & Skoog MS media supplemented …

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Effect Of Grafting On Resistance To Vine Decline Disease, Yield And Fruit Quality In Muskmelon Cv. Sawadi, Qais Al-Mawaali, Abdullah M. Al-Sadi, Fahad A. Al-Said, Mohammed Shafiur Rahman, Intisar Al-Zakwani, Amanat Ali, M. Al-Yahyai Apr 2025

Effect Of Grafting On Resistance To Vine Decline Disease, Yield And Fruit Quality In Muskmelon Cv. Sawadi, Qais Al-Mawaali, Abdullah M. Al-Sadi, Fahad A. Al-Said, Mohammed Shafiur Rahman, Intisar Al-Zakwani, Amanat Ali, M. Al-Yahyai

Journal of Agricultural and Marine Sciences

A study was conducted to evaluate graft success, resistance to vine decline disease and effect of grafting on quality and yield of muskmelon. Two field experiments, conducted in Oman, showed that muskmelon cv. Sawadi grafted on six cucurbit rootstocks gave high grafting success: 97.6-99.1% (avg. 98.6%) and 92.4-96.9% (avg. 95.3%) under field conditions in fall 2012 and spring 2013 respectively. No significant differences were observed between seasons among the six treatments and a non-grafted control in consumer preference for odor and firmness, fruit shape, flesh vitamin C, micronutrient content and TSS (sucrose %) or pH in spring 2013 (P > 0.05). …

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Overview Of Decadal Ecosystem Changes In The Western Arabian Sea And The Occurrence Of Algal Blooms, Paul Harrison, Sergey Piontkovski, Khalid Al-Hashmi Apr 2025

Overview Of Decadal Ecosystem Changes In The Western Arabian Sea And The Occurrence Of Algal Blooms, Paul Harrison, Sergey Piontkovski, Khalid Al-Hashmi

Journal of Agricultural and Marine Sciences

Gradual decadal changes have taken place in the Western Arabian Sea over the last 50 years. These changes have affected wind speeds, atmospheric and sea surface temperature, thermohaline stratification, shoaling of the oxycline, and dust/iron inputs. A decrease in nitrate supply of the photic layer have caused an increase in annual frequency of harmful algal blooms and fish kills. Along with that, a decrease in diatom biomass and a shift from red Noctiluca to green Noctiluca during the northeast monsoon was observed during the last two decades, Even though these are the same species they have very different nutritional modes. …

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2nd Gcc Marine Biotechnology Conference: Emerging Opportunities And Future Perspectives, Sergey Dobretsov Apr 2025

2nd Gcc Marine Biotechnology Conference: Emerging Opportunities And Future Perspectives, Sergey Dobretsov

Journal of Agricultural and Marine Sciences

2nd GCC Marine biotechnology conference was held at Sultan Qaboos University, 31 October - 1 November 2017. The conference was organized by the Center of Excellence in Marine Biotechnology, SQU. The conference focused on four major themes, including Genetics and biodiversity, Marine biofouling and its prevention, Marine natural products, and Aquaculture and fisheries. In total, 160 delegates from 23 different countries were registered for this conference and 106 delegates attended the conference. One plenary lecture and three keynote addresses were given, 39 oral and 30 poster presentations were made. The final session reviewed national and regional issues and identified some …

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Integrated Aquaculture In Arid Environments, Stephen Goddard, Fatma Saif Al-Abri Apr 2025

Integrated Aquaculture In Arid Environments, Stephen Goddard, Fatma Saif Al-Abri

Journal of Agricultural and Marine Sciences

Around one third of the globe is classified as desert or arid (<200mm rain annually) and most such regions lack food security. Traditional freshwater aquaculture is often a marginal activity and competes with agriculture for limited water resources. Developing technologies offer new opportunities to increase productivity of aquaculture through integration with vegetable production in aquaponic systems and to reduce water requirements through the application of biofloc technology. Aquaponic systems combine aquaculture and hydroponic plant production and are integrated within a re-cycled water system. Fish waste metabolites provide the nutrients for plants grown in soil-less, hydroponic systems. Biofloc farming systems operate with minimum or zero water exchange. Suspended biofloc particles develop in fish tanks under conditions of full aeration and controlled carbon to nitrogen ratios. They comprise algae, bacteria, protozoa and particulate organic matter held in a loose matrix. They provide in-situ treatment of harmful fish metabolites, are protein rich, contain essential fatty acids, vitamins and minerals and supplement the diets of filter-feeding farmed species. The integration of fish culture with vegetable production provides new opportunities for small and medium enterprises. Integrated farms occupy a small footprint, optimise the use of resources and can be built close to population centres. This paper reviews current developments in aquaponics and biofloc technology against the background of food security needs in arid regions.

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Extraction Of Natural Colors From Marine Algae, Tanveer -. Alam Apr 2025

Extraction Of Natural Colors From Marine Algae, Tanveer -. Alam

Journal of Agricultural and Marine Sciences

Abstract:The pigment content in microalgae is a specific feature of each species. Colors from natural sources are gaining more importance mainly due to health and environmental issues. Algae contain a wide range of pigments. Three major classes of pigments are chlorophylls, carotenoids (carotenes and xanthophylls) and phycobilins (Phycocyanin and phycoerythrin). Phycocyanin and phycoerythrin belong to the major class of phycobilins photosynthetic pigment while fucoxanthin and peridinin belong to carotenoid group of photosynthetic pigment. Macro- and microalgae (including cyanobacteria) have been recognized to provide a wide diversity of metabolites including pigments for energy capture and photo-protection. One of the main objectives …

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Moisture And Temperature In A Proppant-Enveloped Silt Block Of A Recharge Dam Reservoir: Laboratory Experiment And 1-D Mathematical Modelling, Anvar Kacimov, Ali Al-Maktoumi, Said Al-Ismaily, Hamed Al-Busaidi Apr 2025

Moisture And Temperature In A Proppant-Enveloped Silt Block Of A Recharge Dam Reservoir: Laboratory Experiment And 1-D Mathematical Modelling, Anvar Kacimov, Ali Al-Maktoumi, Said Al-Ismaily, Hamed Al-Busaidi

Journal of Agricultural and Marine Sciences

Mosaic 3-D cascade of parallelepiped-shaped silt blocks, which sandwich sand- lled cracks, has been discovered in the eld and tested in lab experiments. Controlled wetting-drying of these blocks, collected from a dam reservoir, mimics field ponding-desiccation conditions of the topsoil layer subject to caustic solar radiation, high temperature and wind, typical in the Batinah region of Oman. In 1-D analytical modelling of a transient Richards’ equation for vertical evaporation, the method of small perturbations is applied, assuming that the relative permeability is Avery-anov’s 3.5-power function of the moisture content and capillary pressure is a given (measured) function. A linearized advective …

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Agricultural Resources Management Through A Linear Programming Approach: A Case Study On Productivity Optimization Of Crop-Livestock Farming Integration, Hemanatha P. W. Jayasuriya, Romy Das Apr 2025

Agricultural Resources Management Through A Linear Programming Approach: A Case Study On Productivity Optimization Of Crop-Livestock Farming Integration, Hemanatha P. W. Jayasuriya, Romy Das

Journal of Agricultural and Marine Sciences

The crop-livestock integrated farming system practiced in most developing countries depends to a greater extent on the ecosystem as a whole. The importance of animals as an agent of nutrient recycle, sources of rural energy in terms of draft power and fuel as well as major contributor of the farm economy, has resulted into increased population of ruminant stock in these regions creating threats to the sustainability and productivity of land resources. This case-study research attempted to formulate optimum herd size compatible to different resource holding farm categories within the sub watershed in mid hills region of Nepal. The research …

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Computer Vision Technique To Classify Dates Based On Hardness, Annamalai Manickavasagan, Naeema H. Al-Shekaili, Nawal K. Al-Mezeini, M. Shafiur Rahman, Negib Guizani Apr 2025

Computer Vision Technique To Classify Dates Based On Hardness, Annamalai Manickavasagan, Naeema H. Al-Shekaili, Nawal K. Al-Mezeini, M. Shafiur Rahman, Negib Guizani

Journal of Agricultural and Marine Sciences

Hardness is one of the important attributes in determining the quality of dried fruits. Hardness assessment is normally carried out by manual inspection. This method is time consuming, laborious, expensive and subjective. The objective of this study was to develop a computer vision system with a monochrome camera to classify dates based on hardness. Date samples were obtained from three different growing regions in Oman and graded into soft, semi-hard, and hard classes based on hardness. A total of 1800 date samples were imaged individually using a monochrome camera (600 dates / class). Histogram and texture features were extracted from …

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Effect Of Sugar Replacement With Date Paste And Date Syrup On Texture And Sensory Quality Of Kesari (Traditional Indian Dessert), Annamalai Manickvasagan, Chandini S. Kumar, Zaher H. Al-Attabi Apr 2025

Effect Of Sugar Replacement With Date Paste And Date Syrup On Texture And Sensory Quality Of Kesari (Traditional Indian Dessert), Annamalai Manickvasagan, Chandini S. Kumar, Zaher H. Al-Attabi

Journal of Agricultural and Marine Sciences

In this study, a popular Indian dessert, kesari, was reformulated by substituting refined sugar at various levels (0%=control, 25%, 50%, 75% and 100%) with date past and syrup, and changes in instrumental texture profile, L*a*b* colour values and sensory properties were determined. The hardness of date syrup kesari was higher than that of date paste kesari. However, there were no differences in hardness among various levels of replacement. There were no differences between syrup vs paste products or among various levels of replacements in cohesiveness, springiness, gumminess, adhesiveness and chewiness of kesari. The developed kesari scored 5.5 to 7.5 on …

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Carbon And Nutrient Balances In Three Mountain Oases In Northern Oman, Andreas Buerkert, Mohamed Nasser Al-Rawahi, Martina Melapie, Eva Schlecht Apr 2025

Carbon And Nutrient Balances In Three Mountain Oases In Northern Oman, Andreas Buerkert, Mohamed Nasser Al-Rawahi, Martina Melapie, Eva Schlecht

Journal of Agricultural and Marine Sciences

Carbon (C) and nitrogen (N) fluxes of two cropping systems in three mountain oases of Al Jabal Al-Akhdar mountains of northern Oman were determined in 2008/09 and 2009/10. These comprised garlic at Ash Sharayjah (1,900 m asl) and Masayrat (1,030 m asl), pomegranate in Ash Sharayjah and Qasha’ (1,640 m asl), and date palm groves at Masayrat. Goat manure was applied to garlic fields at 47 and 40 t dry matter (DM) ha-1 at Ash Sharayjah and 42 and 37 t DM ha-1 at Masayrat. Pomegranates at Ash Sharayjah and Qasha’ received cattle dairy manure at 66 and 60 t …

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Genetic And Environmental Factors Affecting 305-Day Mature Equivalent Milk Yield Of Holstein Friesian Cows In The United Arab Emirates, Mohamed Elnour Elboshra, Tagelsir Eisa Ali, Ali Ahmed Hassabo Apr 2025

Genetic And Environmental Factors Affecting 305-Day Mature Equivalent Milk Yield Of Holstein Friesian Cows In The United Arab Emirates, Mohamed Elnour Elboshra, Tagelsir Eisa Ali, Ali Ahmed Hassabo

Journal of Agricultural and Marine Sciences

The main objective of this research was determining the effect of sire of cow, year and season of freshening, lactation number, and their different interactions on 305-day mature equivalent (ME) milk yield of Holstein Friesian cows in the United Arab Emirates (UAE). It also aimed to estimate sire and error variance and heritability of 305-day ME milk yield. The data was collected from AL Salamat Dairy Farm in Al Ain. The average size of the herd was 1000 animals during the experimental period. The Dairy Comp 305 computer program was used for compiling the data. The data under the study …

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Serum Biochemistry Parameters In The Omani Racing Arabian Camels (Camelus Dromedarius), Yasmin Elhag Eltahir, Hassan Mohammed Ali, B.E. Hago, O. Mahgoub Apr 2025

Serum Biochemistry Parameters In The Omani Racing Arabian Camels (Camelus Dromedarius), Yasmin Elhag Eltahir, Hassan Mohammed Ali, B.E. Hago, O. Mahgoub

Journal of Agricultural and Marine Sciences

Blood samples were collected from thirty, 2-year old female Arabian camels from the eastern region of Oman. Camels were managed in the traditional way in the Arabian Gulf region, primarily fed fresh alfalfa and barley grain. Blood was drawn into serum vaccutainers from jugular venipuncture. Serum samples were analyzed by spectrophotometric analysis using a CX7/CX7 serum chemistry analyzer (Synchron, Beckman). Means, standard deviations and minimum and maximum values were calculated using Excel spreadsheets on Microsoft Office 2007. The SAS (2000) package was used to produce coefficient of determination (R2) between the eight serum mineral values. The following mean values Å} …

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Identification And Characterization Of Two Amylase Producing Bacteria Cellulosimicrobium Sp. And Demequina Sp. Isolated From Marine Organisms, Laila S.H. Al-Naamani, Sergey Dobretsov, Jamal Al-Sabahi, Bassam Soussi Apr 2025

Identification And Characterization Of Two Amylase Producing Bacteria Cellulosimicrobium Sp. And Demequina Sp. Isolated From Marine Organisms, Laila S.H. Al-Naamani, Sergey Dobretsov, Jamal Al-Sabahi, Bassam Soussi

Journal of Agricultural and Marine Sciences

Marine sources have been known to yield novel compounds with a wide range of bioactivity with various commercial applications. In this study, the abilities of bacteria isolated from eight marine organisms to produce α-amylase were examined. All eight organisms were found to harbor amylase producing bacteria. Two bacterial species isolated from the green alga Ulva rigida and the sponge Mycale sp. were further identified and their α-amylases were purified and characterized. The bacterial species isolated from U. rigida and Mycale sp. were identified by DNA sequencing as Cellulosimicrobium sp. and Demequina sp., respectively. Cellulosimicrobium sp. obtained maximum cell growth and …

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Culture Conditions Affect The Nutritional Value Of The Copepod Acartia Tonsa, Arne M. Malzahn, Nicole Aberle-Malzahn, Katherina Schoo, Maarten Boersma Apr 2025

Culture Conditions Affect The Nutritional Value Of The Copepod Acartia Tonsa, Arne M. Malzahn, Nicole Aberle-Malzahn, Katherina Schoo, Maarten Boersma

Journal of Agricultural and Marine Sciences

Live feed are still necessary for the rearing of larval stages of several fish species, especially marine ones. Compared to Artemia, copepods are of superior quality. This is based on a suite of traits like size, movement, and nutritional value. Copepods are for example usually high in protein and fatty acids. Essential fatty acid profiles reflect to a large degree the fatty acid supply, which provides the opportunity to manipulate fatty acid profiles of, amongst others, copepods. By manipulating nutrient supply of the algae Rhodomonas salina we were able to double essential fatty acid concentrations in naupliar and copepodit life …

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Protein Resources And Aquafeed Development In The Sultanate Of Oman, Stephen Goddard, Fahad Saleh Ibrahim Apr 2025

Protein Resources And Aquafeed Development In The Sultanate Of Oman, Stephen Goddard, Fahad Saleh Ibrahim

Journal of Agricultural and Marine Sciences

The continued growth of intensive aquaculture is dependent on the development of sustainable protein sources to replace conventional fish meals in aquafeeds. Practical alternatives are plant-derived protein, protein from micro-organisms and protein from under-utilized marine resources. The challenges are to find alternative ingredients with high protein, suitable amino acid content, high palatability and absence of anti-nutritional factors. There is considerable biotechnology-based research in this area, including genetic modification of plant-based proteins, use of probiotics to enhance digestibility and the renewed application of fermentation technologies to produce single cell proteins. Research in Oman is focused on the utilization of marine protein …

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Improving The Quality Of Tiger Shrimp Penaeus Monodon Through Dietary Incorporation Of Algae As A Source Of Natural Pigment, Kunal Mondal, Subhra Bikash Bhattacharyya, Abhijit Mitra Apr 2025

Improving The Quality Of Tiger Shrimp Penaeus Monodon Through Dietary Incorporation Of Algae As A Source Of Natural Pigment, Kunal Mondal, Subhra Bikash Bhattacharyya, Abhijit Mitra

Journal of Agricultural and Marine Sciences

Tiger shrimp is one of the major candidate species for export oriented aquaculture which dominates the seafood market in regions of European Union, Japan and USA. Carotenoid content in seafood has now become one of the important criteria in determining the quality of edible product. Recent trends in supplementing fish diets with natural pigment source are an alternative to the utilization of expensive synthetic pigments. In this context, green algae Enteromorpha intestinalis was selected as a source of natural pigment for inclusion in the diet of tiger shrimp Penaeus monodon. Astaxanthin being an important category of carotenoid pigment was monitored …

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