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Optimal Density Of Asian Seabass (Lates Calcarifer) In Combination With The Omani Abalone (Haliotis Mariae), Brown Mussel (Perna Sp.) And Seaweed (Ulva Fasciata) In A Land-Based Recirculating Integrated Multi-Trophic Aquaculture (Imta) System, Balqees Al-Rashdi, Wenresti Glino Gallardo, Gilha Yoon, Hussein Al Masroori Apr 2025

Optimal Density Of Asian Seabass (Lates Calcarifer) In Combination With The Omani Abalone (Haliotis Mariae), Brown Mussel (Perna Sp.) And Seaweed (Ulva Fasciata) In A Land-Based Recirculating Integrated Multi-Trophic Aquaculture (Imta) System, Balqees Al-Rashdi, Wenresti Glino Gallardo, Gilha Yoon, Hussein Al Masroori

Journal of Agricultural and Marine Sciences

An experiment was conducted to develop a land-based recirculating integrated multi-trophic aquaculture (IMTA) system using a combination of the Omani abalone (Haliotis mariae) and Asian seabass (Lates calcarifer) as fed species, brown mussel (Perna sp.) and seaweed (Ulva fasciata) as extractive species. Specifically, the study was carried out to determine the optimal seabass density (20, 40 and 60 individuals per 500-liter tank) on water quality and the growth and survival of the cultured species in the system. Sampling of all species was done every two weeks to check their growth. Water samples were taken every two weeks for analysis of …

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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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Farmers' Perception On The Influence Of Inter-Communal Conflicts On Agricultural Production In Shaare/Tsaragi Communities, Kwara State, Nigeria, Issa Zubair Busari, Felix Olayinka Oladipo, Abdulrasaq Kamal Daudu, Olawale Samson Selesi Apr 2025

Farmers' Perception On The Influence Of Inter-Communal Conflicts On Agricultural Production In Shaare/Tsaragi Communities, Kwara State, Nigeria, Issa Zubair Busari, Felix Olayinka Oladipo, Abdulrasaq Kamal Daudu, Olawale Samson Selesi

Journal of Agricultural and Marine Sciences

Rural communities which produce the bulk of agricultural produce in Nigeria have been plagued by several inter communal conflicts. One of such conflicts is Share /Tsaragi inter-communal conflicts. The objective of the study was to assess perceptions of farmers on the influence of inter-communal conflicts on the agricultural production in Share and Tsaragi communities in Edu and Ifelodun Local Government Areas (LGAs) of Kwara State, Nigeria. Methododology. A three-stage random sampling procedure was used to select one hundred and twenty (120) respondents for the study. Data were collected through the use of interview schedule technique. A likert-type five point continuum …

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Antibacterial Activity And Chemical Composition Of Crude Extract And Oil Of Zygophyllum (Fagonia) Luntii (Baker) 1894 (Family Zygophyllaceae), Riaz Shah, Suad J.A. Alabri, Ameera S.M Ashehi Ashehi, Nasser S.S. Asiyabi Asiyabi, Wafa K.A. Almamari Almamari, Jamal N. Alsabahi Alsabahi, Huda Al-Ruqaishi Apr 2025

Antibacterial Activity And Chemical Composition Of Crude Extract And Oil Of Zygophyllum (Fagonia) Luntii (Baker) 1894 (Family Zygophyllaceae), Riaz Shah, Suad J.A. Alabri, Ameera S.M Ashehi Ashehi, Nasser S.S. Asiyabi Asiyabi, Wafa K.A. Almamari Almamari, Jamal N. Alsabahi Alsabahi, Huda Al-Ruqaishi

Journal of Agricultural and Marine Sciences

Traditionally wild plants including Zygophyllum spp., containing many bioactive constituents, are used as medicine. Zygophyllum luntii from Zygophyllaceae family is wildly grown in Oman and has been used for medical purposes. The present study investigated the antibacterial activity of the crude extracts (leaves, stem and roots) and oil (leaves) from Z. luntii. These extracts were tested against Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa in well diffusion assays utilizing Muller Hinton Agar (MHA). The hydrocarbon contents and the fatty acid methyl ester (FAME) components of the extracts were also determined by GC-MS. Significant antibacterial activity was observed in the Z. …

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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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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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Is Co-Management Feasible In Achieving Fisheries Sustainability? A Case Of Oman’S Lobster Fishery, Shekar Bose, Abdullah Hilal Al Balushi, Ahmed Al-Haddabi, Ruqaiya Al-Bulushi Apr 2025

Is Co-Management Feasible In Achieving Fisheries Sustainability? A Case Of Oman’S Lobster Fishery, Shekar Bose, Abdullah Hilal Al Balushi, Ahmed Al-Haddabi, Ruqaiya Al-Bulushi

Journal of Agricultural and Marine Sciences

Abstract: This study assesses the feasibility of co-management arrangements in managing scalloped spiny lobster (Panulirus homarus) fishery in the Sultanate of Oman. The appraisal is conducted using various indicators involving pre-implementation phase and institutional characteristics and substantiated by findings of the review of relevant local and global literature and the results of a structured questionnaire survey conducted during 9-28 June, 2013 with 536 randomly selected fishers from three Governorates namely Sharqiyah, Al-Wusta, and Dhofar. The former method helps identifying suitable assessment criteria and provides indication of readiness while the later method helps determining primary stakeholders’ perceived views on various aspects …

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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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Gillnet Selectivity Of The Indian Oil Sardine Sardinella Longiceps Fished In The Sea Of Oman, Anesh Govender, Hamed Al-Oufi Apr 2025

Gillnet Selectivity Of The Indian Oil Sardine Sardinella Longiceps Fished In The Sea Of Oman, Anesh Govender, Hamed Al-Oufi

Journal of Agricultural and Marine Sciences

The size selectivity of drift gill-nets for Sardinella longiceps was investigated in the Sea of Oman using a range of nets between 3.3 and 5.7 cm stretched mesh size. All nets had a hanging ratio of 0.5. A total of 1 211 Indian oil sardines were caught in 5 experimental nets, the majority of which were retained by the 3.3, 3.8 and 4.5 cm mesh nets. Peak selectivity was reached at 14.9 cm FL for the 3.3 cm mesh size increasing to 16.9 cm for the 3.8 cm mesh size. The estimated and observed length frequency distributions were unimodal. A …

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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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Activation Of Apoptotic Cell Death By Skin Mucus From Asian Swamp Eel (Monopterus Albus) Against Human Lung Cancer Cell Line, Ayah Rebhi Hilles, Syed Mahmood, Mohd Arifin Kaderi, Ridzwan Hashim Apr 2025

Activation Of Apoptotic Cell Death By Skin Mucus From Asian Swamp Eel (Monopterus Albus) Against Human Lung Cancer Cell Line, Ayah Rebhi Hilles, Syed Mahmood, Mohd Arifin Kaderi, Ridzwan Hashim

Journal of Agricultural and Marine Sciences

Asian swamp eel (Monopterus albus) is a freshwater fish which distributed widely in the East of India mainly across Malay Peninsula and Indochinese Peninsula, it is also broadly distributed in the Southern areas of East Asia including, southeastern China, Western Japanese Archipelago, and Korean Peninsula. It lives in muddy places, rice paddies, and slow-flowing currents areas. It has a unique morphological elongated body which is similar to snake and covered with a thick layer of the mucus. The objective of this study is to screen the cytotoxic activity of eel skin mucus extracts and to evaluate the mechanism of cell …

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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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Circle Hook Versus J-Hook: A Case Study Of The Sultanate Of Oman, Ibrahim A. Al-Qartoubi, Shekar Bose, Hussein Samh Al-Masroori, Anesh Govender Apr 2025

Circle Hook Versus J-Hook: A Case Study Of The Sultanate Of Oman, Ibrahim A. Al-Qartoubi, Shekar Bose, Hussein Samh Al-Masroori, Anesh Govender

Journal of Agricultural and Marine Sciences

This paper analyses the operational efficiency and economic performance of the circle hook and the J-hook, commonly used by traditional fishers in the demersal longline fishery of the Sultanate of Oman. A longline experiment was conducted at three fishing locations at Masirah Island of Al-Sharqiyah Governorate. A total of 6,120 baited J-hooks and circle hooks were deployed over a 17-day period. The findings from this experimental research suggest that the overall performance (measured under various operational yardsticks such as hooking status and location, catch composition and quality, catching efficiency, and time and cost efficiency) of the circle hook is better …

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Integrated Management Of The Fusarium Vascular Wilt Disease Of Cucurbita Pepo In Iraq, Safaa N. Hussein Apr 2025

Integrated Management Of The Fusarium Vascular Wilt Disease Of Cucurbita Pepo In Iraq, Safaa N. Hussein

Journal of Agricultural and Marine Sciences

Fusarium vascular wilt disease is one of the most harmful disease that affected broad range of plant species including zucchini (Cucurbita pepo). The objective of the research was to investigate the presence of the phytopathogenic gungus Fusarium oxysporum the causal agent of the disease in zucchini fields. Forty five isolates of F. oxysporum were isolated from four locations in province of Dyala during 2014-2015. Isolate Foq9 was most virulent in the pathogenicity test in vitro. Twenty nine isolates of them amplified their DNA positively with the universal primer of F. oxysporum in the polymerase chain reaction technique (PCR). In vitro …

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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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Antimicrofouling Activities Of Marine Macroalga Dictyota Dichotoma From The Red Sea, Alaa Aref Gadhi, Mohsen M. El-Sherbiny, Abdul Mohsin Al-Sofynai, Mohammad Abdulaziz Ba-Akdah, Sathianeson Satheesh Apr 2025

Antimicrofouling Activities Of Marine Macroalga Dictyota Dichotoma From The Red Sea, Alaa Aref Gadhi, Mohsen M. El-Sherbiny, Abdul Mohsin Al-Sofynai, Mohammad Abdulaziz Ba-Akdah, Sathianeson Satheesh

Journal of Agricultural and Marine Sciences

Introduction. Marine organisms produce a variety of secondary metabolites mainly for achieving the defence against the competitors and predators. These compounds could be used as natural product antifoulants for the management of biofouling growth on marine structures. Objectives. To understand the antifouling defence strategies of marine macroalgae collected from the Red Sea. Methodology. The macroalga Dictyota dichotoma was collected from the Obhur Creek of Red Sea, Saudi Arabia and extracted using methanol. Surface and total extraction methods were performed and tested against a bacterial strain isolated from the microfouling assemblage. Results. The extracts obtained from the macroalgal samples have strong …

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Bacterial Infection In Farmed Barramundi Juveniles, Lates Calcarifer, Buthaina Al-Khaziri, Adil Al Sulimani, Najla Al Mandhari, Gilha Yoon, Azhar Al-Busaidi Apr 2025

Bacterial Infection In Farmed Barramundi Juveniles, Lates Calcarifer, Buthaina Al-Khaziri, Adil Al Sulimani, Najla Al Mandhari, Gilha Yoon, Azhar Al-Busaidi

Journal of Agricultural and Marine Sciences

In 2016, Barramundi, Lates calcaifer juveniles imported from Thailand to the aquaculture station at Sultan Qaboos University exhibited remarkable external clinical signs of losing scales, severe muscle necrosis, and ascites. Fin rot was also observed in the diseased fish. The mortality reached more than 90 % and it was assumed that certain bacterial species were associated with the diseased fish. The objective of the present study was to investigate the infection route of disease, revealing the causative agent and finding the most effective antibiotic treatment. The suspected pathogen vehicle was mosquito larvae in the outlet of the culture tank as …

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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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Antifouling Properties Of Chitosan Coatings On Plastic Substrates, Laila Salim Al-Naamani Apr 2025

Antifouling Properties Of Chitosan Coatings On Plastic Substrates, Laila Salim Al-Naamani

Journal of Agricultural and Marine Sciences

In the current study, chitosan coatings were fabricated on plastic substrata and investigated for their antifouling activities. Scanning Electron Microscopy (SEM) and water contact angle measurement (WCA) of the fabricated chitosan films showed smooth and hydrophilic surface with WCA below 60°. Chitosan coating on plastic substrate showed 88% reduction in settlement of bryozoan Bugula neritina larvae compare to the control after 3 hours incubation in dark conditions with no larval mortality during the experiment. The antimicrobial activity of chitosan was evaluated by coating of plastic panels with the prepared chitosan solution and immersing the coated samples in seawater with controlled …

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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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Impact Of Reclaimed Water Irrigation On Soil Salinity, Hydraulic Conductivity, Cation Exchange Capacity And Macro-Nutrients, Saif A. Al-Khamisi, Malik Al-Wardy, Mushtaque Ahmed, Sanmugam A. Prathapar Apr 2025

Impact Of Reclaimed Water Irrigation On Soil Salinity, Hydraulic Conductivity, Cation Exchange Capacity And Macro-Nutrients, Saif A. Al-Khamisi, Malik Al-Wardy, Mushtaque Ahmed, Sanmugam A. Prathapar

Journal of Agricultural and Marine Sciences

Field studies were conducted at Agriculture Research Center, Oman during the year 2010/2011 to monitor the impact of reclaimed water irrigation on soil physical and chemical properties after wheat, cowpea and maize cultivation (in rotation). Three different water sources (Groundwater (GW), desalinized water (DW), and Reclaimed Water (RW)) were used as the treatments in Randomized Completely Block Design (RCBD) with 3 blocks (replicates). Samples were taken from four depths (30, 45, 60 and 90 cm) after harvesting time of the three crops. Soil salinity (ECe) in all soil depths decreased with time. Organic carbon did not show significant difference between …

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An Assessment Of Longnose Trevally (Carangoides Chrysophrys) (Cuvier, 1833) Fishery In The Arabian Sea, Oman, Issam H. Al-Rasady, Anesh Govender Apr 2025

An Assessment Of Longnose Trevally (Carangoides Chrysophrys) (Cuvier, 1833) Fishery In The Arabian Sea, Oman, Issam H. Al-Rasady, Anesh Govender

Journal of Agricultural and Marine Sciences

The Present study assessed the fishery state of longnose trevally (Carangoides chrysophrys) in the North West Arabian Sea. Key population parameters were estimated, and yield and spawning stock biomass per recruit analyses were conducted. The equation presented by Alagaraja (1984) for estimating natural mortality resulted in M = 0.29 year-1 and lead to the best estimate of longevity. Hence this value was used in the yield and spawning stock biomass per recruit analyses. The total mortality (Z) was estimated as 0.39 year-1, based on a catch curve analysis. Length-at- and age-at-50% captures were 38.21cm and 4 years respectively. The yield …

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Fish Landings And Oman Shelf Area, Sergey A. Piontkovski, H.E. Hamed S. Al-Oufi, Nadir M. Al-Abri Apr 2025

Fish Landings And Oman Shelf Area, Sergey A. Piontkovski, H.E. Hamed S. Al-Oufi, Nadir M. Al-Abri

Journal of Agricultural and Marine Sciences

Data from five field surveys carried out along the shelf in the 20-250m depth range and historical data on artisanal fishery were analyzed. A positive linear relationship between the demersal fish biomass and the shelf area was pronounced for a certain (intermediate) stratum only: 50-100m. No statistical link was found for the strata above it (25-50m) and beneath it (100-150m and 150-250m). The pronounced one was associated with the low boundary of the oxygen minimum zone impinging on the shelf. Annual landings of demersal fishes in the region with the largest shelf area exceeded landings in the region with the …

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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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Fouling And Its Next Generation Management: A Perspective, Daniel Rittschof, Christina Chai, Serena Lay Ming Teo, James S. Maki Apr 2025

Fouling And Its Next Generation Management: A Perspective, Daniel Rittschof, Christina Chai, Serena Lay Ming Teo, James S. Maki

Journal of Agricultural and Marine Sciences

The last 50 years of fouling research and management taught us that indiscriminate use of toxic approaches damages ecosystem services of estuaries and oceans critical to man’s existence. Next generation environmentally benign management requires knowledge of the fouling process and an understanding of the consequences of different management options. An intermediate step may be additives that fit with existing business models and distribution systems, but that carry a much reduced environmental footprint. Subsequently, the evolution of a next generation hull fouling management system with limited toxicity easy clean surfaces should replace or augment the existing commercial easy-release coatings. These new …

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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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Biofouling On Artificial Substrata In Muscat Waters, Sergey Dobretsov Apr 2025

Biofouling On Artificial Substrata In Muscat Waters, Sergey Dobretsov

Journal of Agricultural and Marine Sciences

Macro-fouling communities developed on acrylic, aluminum, wood and fiberglass panels were investigated after 4 months exposure in Marina Bandar al Rawdah and Marina Shangri La. Wet weight of biofouling was about 2-fold higher in Marina Bandar Rawdah and different communities were formed on the front and back sides of the panels. Differences between communities on different materials were less pronounced. In the second study, wet weight and community composition of macro-fouling communities on ceramic tiles at the depth of 1 m and 5 m in Marina Bandar al Rawdah were investigated. During 2008 - 2010, there were no differences between …

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