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2025

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Development And Performance Evaluation Of A Solar Tunnel Date Dryer In Oman, Mohammad Ali Basunia, Hamid H. Al-Handali, Mohammed Issa Al-Belushi, Mohammad Shafiur Rahman, Osman Maghoub Apr 2025

Development And Performance Evaluation Of A Solar Tunnel Date Dryer In Oman, Mohammad Ali Basunia, Hamid H. Al-Handali, Mohammed Issa Al-Belushi, Mohammad Shafiur Rahman, Osman Maghoub

Journal of Agricultural and Marine Sciences

Taking into consideration the date harvesting and landholding capacities of the marginalized rural farmers in Oman, a 12 meter long and 2 meter wide tunnel was designed and constructed to dry about 180-200 kg of freshly harvested dates per batch. Half of the tunnel base was used as a flat plate air heating solar collector and the other half as a dryer. The drying air was forced from the collector region (South side) to the drying region (North side) of the half circled tunnel where the product is to be dried. The drying temperature could be easily raised by some …

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Habitat Preferences Of Juvenile Abalone (Haliotis Mariae Wood, 1828) Along The Dhofar Coast Of Oman And Implications For Conservation, Schalk Willem Petrus De Waal, Mohammed Balkhair, Ali Al-Mashikhi, Salem Khoom Apr 2025

Habitat Preferences Of Juvenile Abalone (Haliotis Mariae Wood, 1828) Along The Dhofar Coast Of Oman And Implications For Conservation, Schalk Willem Petrus De Waal, Mohammed Balkhair, Ali Al-Mashikhi, Salem Khoom

Journal of Agricultural and Marine Sciences

Surveys were conducted along the eastern Dhofar coast of Oman to investigate densities and habitat preferences of juvenile Haliotis mariae (< 3 cm SL). Average density was 0.62 m-2 (SD 0.56); average urchin density was 3.4 urchins m-2 (SD 3.9). Relationships between juvenile abalone densities and small boulders (<30 cm in diameter (Ø)) tested significant (p = 0.049), as did those between juvenile abalone and urchin densities (p = 0.031). Selectivity (w) and standardized (B) ratios quantifying the relative probability of selection by juvenile abalone for different categories of resource available were calculated. For the studied area B values tested significantly different for (p = 0.004) the different habitats, urchins, boulders <30 cm, 30> <50 cm, and >50 cm Ø, respectively. B values were highest for urchins (6 times that for small boulders), and for boulders <30 cm Ø (double that for boulders 30> <50 cm Ø). B values for boulder habitats decreased as boulder size increased. Urchin utilisation by juvenile abalone as shelter ranged between geographic areas from a minimum of 15.5% to a maximum of 47.6%. The proportion of total habitat that is preferred by more than 97% of juvenile abalone found, including urchins and boulders < 50 cm Ø, comprises 29% of surveyed substratum. While the role urchins play on wild juvenile H. mariae has not proved vital, it is definitely significant. Although juvenile densities are low and are not currently limited by the availability of suitable habitat, it is crucial to identify and conserve those microhabitats that support recruitment of H. mariae. The abundance of these areas should be among the criteria used in selecting protected conservation areas.

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Estimating Leaching Requirements For Barley Growth Under Saline Irrigation, Ahmed Al-Busaidi, Jaaman Rabeea, Mushtaque Ahmed, Salim Al-Rawahy Apr 2025

Estimating Leaching Requirements For Barley Growth Under Saline Irrigation, Ahmed Al-Busaidi, Jaaman Rabeea, Mushtaque Ahmed, Salim Al-Rawahy

Journal of Agricultural and Marine Sciences

The utilization of marginal water resources for agriculture is receiving considerable attention. The lands irrigated with saline water are required to reduce salt accumulations through leaching and/or drainage practices. A field experiment was carried out to investigate the effect of saline irrigation and leaching fraction on barley (Hordeum vulgare L.) growth. For this purpose highly saline water was diluted to the salinity levels of 3, 6 and 9 dS m-1 and applied by drip irrigation at 0.0, 0.15, 0.20 and 0.25 leaching fractions (LF). The results of the experiment showed that both quantity and quality of water regulated salts distribution …

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The In Vitro Activity Of A Range Of Natural Bioflavonoids Against Five Species Of Pathogenic Fish Bacteria, Gil Ha Yoon, Sarah Al Jufaili, Aliya Al Ghabshi, Nashwa Al Mazrooei Apr 2025

The In Vitro Activity Of A Range Of Natural Bioflavonoids Against Five Species Of Pathogenic Fish Bacteria, Gil Ha Yoon, Sarah Al Jufaili, Aliya Al Ghabshi, Nashwa Al Mazrooei

Journal of Agricultural and Marine Sciences

The in vitro antibacterial activity of thirty two plant-derived compounds (26 crude herbal extraction and 6 pure citrus-based bioflavonoids) were tested on five different species of aquatic bacterial pathogens (Aeromonas hydrophila, A. salmonicida, A. sobria, Edwardsiella ictaluri, and E. tarda) over a period of 72 hours at 22 oC. From the agar diffusion test, six pure citrus-based bioflavonoids (apigenin, catechin, hesperidin, morin, naringin and quercetin) appeared to impact on growth when used at concentrations ranging from 10 ppm - 1000 ppm. To confirm their effect on the growth dynamics of each bacteria, a 1000 ppm dose of the appropriate bioflavonoid …

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Relationship Between Body Composition And Performance Of Local Turkey, Rafh Mohammed Taher Khuleel Apr 2025

Relationship Between Body Composition And Performance Of Local Turkey, Rafh Mohammed Taher Khuleel

Journal of Agricultural and Marine Sciences

This study examined the relationship between carcass composition and performance traits of local turkey fed starter diet (30.2% protein, 2950 kcal/kg ME). At 8 week of age, male and female chicks were separated and reared in individual cages until 16 weeks of age. At the end of the experiment, the birds were slaughtered and carcasses were analyzed for chemical composition to predict chemical composition (moisture, ash, protein and fat) from performance traits such as initial body weight (g) at 8wk, final live body weight (g) at 16wk, daily weight gain (g), daily feed intake (g), feed conversion ratio, daily protein …

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Meat Production Potential Of Small Ruminants Under The Arid And Semi-Arid Conditions Of Pakistan, Mohamed Fatah Ullah Khan, Faisal Ashfaq Apr 2025

Meat Production Potential Of Small Ruminants Under The Arid And Semi-Arid Conditions Of Pakistan, Mohamed Fatah Ullah Khan, Faisal Ashfaq

Journal of Agricultural and Marine Sciences

Sheep and goat production is one of the major economic activities under the arid and semi-arid condition of Pakistan. The country has 53.8 million goats and 26.5 million sheep. The main purpose of raising these small ruminants in the country is meat production. The small ruminants share about 40% of total red meat produced in the country. It has been observed that in the last several years the overall per capita consumption of the animal food products is increasing. Overall annual growth rate of goats in Pakistan is 4%, which is the highest in Asia. Pakistan ranks third in Asia …

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An Assessment Of Omani Native Sheep Fiber Production And Quality Characteristics, Osman Mahgoub, Isam T. Kadim, Ahmed Al-Dhahab, Reynaldo B. Bello, Issa S. Al-Amri, Aisha A. Ambu Ali, Samera Khalaf Apr 2025

An Assessment Of Omani Native Sheep Fiber Production And Quality Characteristics, Osman Mahgoub, Isam T. Kadim, Ahmed Al-Dhahab, Reynaldo B. Bello, Issa S. Al-Amri, Aisha A. Ambu Ali, Samera Khalaf

Journal of Agricultural and Marine Sciences

Wool production and quality measurements were carried out on 100 Omani native female sheep (body weight 38.6 ± 5.5 kg; age 993 ± 488 d). Sheep were kept in partially shaded pens and fed ad libitum Rhodes grass hay (crude protein 8.83%) plus a daily amount of 200 g general ruminant concentrate (crude protein 16.5% DM). Animals were shorn once a year and samples were taken from the left mid-side site to determine fleece and fiber characteristics. The scanning electron microscope (SEM) was used to study the fine appearance of the wool fibers. A skin sample was used to study …

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Carcass Characteristics Of The Libyan Purebred Mahali Goat And Their Crosses With Damascus And Morcia Granada Goats, Abdelkareem E. Ahtash, Abdulla S. Biala, Aiad F. Magid, Hamed M. Marhoun Apr 2025

Carcass Characteristics Of The Libyan Purebred Mahali Goat And Their Crosses With Damascus And Morcia Granada Goats, Abdelkareem E. Ahtash, Abdulla S. Biala, Aiad F. Magid, Hamed M. Marhoun

Journal of Agricultural and Marine Sciences

This study was conducted to evaluate the carcass characteristics of Mahali (M), Damascus (D) and Morcia Granada (G) goats and their crosses. Live weight, carcass weight, dressing-out %, rib eye muscle area, non-carcass components and kidney fat were measured. The results showed significant superiority of Damascus goats in live weight (65.8 kg), carcass weight (34.3 kg), dressing-out %( 52.1%), rib eye muscle areas (22.7 cm²) over the Mahali and Morcia Granada goats. The crossbred group (1/2 M ҳ 1/2 D) was superior in live weight (50 kg), carcass weight (24.2kg), dressing-out %( 48.4%), and rib eye muscle area (21.2cm²) over …

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Effect Of Diet Quality And Housing On Water Status In Sudanese Desert Sheep And Goats, Hashim Mohamed Elhadi Apr 2025

Effect Of Diet Quality And Housing On Water Status In Sudanese Desert Sheep And Goats, Hashim Mohamed Elhadi

Journal of Agricultural and Marine Sciences

Two independent experiments were carried out using Sudanese Desert sheep and goats to investigate water metabolism (total body water, TBW and water turnover, WTO) and internal water compartments using radioactive water (tritium), under natural grazing conditions in a semi-desert area. The second trial was carried out on confined sheep, fed high (Lucerne) and poor quality (desert grasses) diets. The body weights, rectal temperature and water parameters were monitored in both trials and species under the Sudanese summer conditions. The grazing animal’s body weights were reduced compared to confined ones. Hyperthermia was pronounced in goats (9%) compared to sheep (6%). The …

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Live Weight Changes And Their Relationship With The Ovarian Status Of Maiden Fat-Tailed Barbarine Ewes, Imēne Ben Salem, Mourad Rekik, Mohammed Ben Hamouda, Narjess Lassoued Apr 2025

Live Weight Changes And Their Relationship With The Ovarian Status Of Maiden Fat-Tailed Barbarine Ewes, Imēne Ben Salem, Mourad Rekik, Mohammed Ben Hamouda, Narjess Lassoued

Journal of Agricultural and Marine Sciences

The current study assessed the effect of the pattern of live weight change on the ovarian function of maiden Barbarine ewes at approximately 1 year of age. For this purpose, a total of 171 weaned ewe lambs (mean live weight ± s.d. 34.7±3.07 kg and mean age ± SD 196±10 days at weaning) were selected for the experiment. Adjustment of live weight variation was used. Based on the slope of the curve, animals were grouped into three classes LWCI (n=46), LWCII (n=91) and LWCIII (n=34) with live weight loss being highest in LWCI and lowest in LWCIII. Following laparoscopy at …

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Transport Modeling Analysis To Test The Efficiency Of Fish Markets In Oman, Khamis S. Al-Abri, Hemesiri Kotagama, Andrew Palfreman, Houcine Boughanmi Apr 2025

Transport Modeling Analysis To Test The Efficiency Of Fish Markets In Oman, Khamis S. Al-Abri, Hemesiri Kotagama, Andrew Palfreman, Houcine Boughanmi

Journal of Agricultural and Marine Sciences

Oman’s fish exports have shown an increasing trend while supplies to the domestic market have declined, despite increased domestic demand caused by population growth and income. This study hypothesized that declining fish supplies to domestic markets were due to inefficiency of the transport function of the fish marketing system in Oman. The hypothesis was tested by comparing the observed prices of several fish species at several markets with optimal prices. The optimal prices were estimated by the dual of a fish transport cost- minimizing linear programming model. Primary data on market prices and transportation costs and quantities transported were gathered …

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Profitability Analysis Of Selected Farms In The Batinah Region Of Oman, Slim Zekri, Fahad A. Al Said, Iqrar A. Khan Apr 2025

Profitability Analysis Of Selected Farms In The Batinah Region Of Oman, Slim Zekri, Fahad A. Al Said, Iqrar A. Khan

Journal of Agricultural and Marine Sciences

The agricultural sector of Oman represents less than 2% of the total GDP and uses 88% of the fresh water. Several decision makers are questioning whether the agricultural activity in the Sultanate of Oman can be sustained and if so what type of crops should be encouraged. More than 53% of the agricultural cropped area is situated in the Batinah coastal area where farming is exclusively based on groundwater pumping. A sample of 49 market-oriented farms from the Batinah region was surveyed during 2006. Four types of farms were considered. Results showed that the most profitable farms are mixing fodder …

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Influence Of Alternate Bearing On Leaf And Fruit Mineral Composition At Different Developmental Stages Of Date Palm Fruits, M.O. El-Mardi, A.E. Pillay, J.R. Williams, C.S. Bakheit, S.M. Hassan, M. Al-Hadabbi, A. Al-Hamdi Apr 2025

Influence Of Alternate Bearing On Leaf And Fruit Mineral Composition At Different Developmental Stages Of Date Palm Fruits, M.O. El-Mardi, A.E. Pillay, J.R. Williams, C.S. Bakheit, S.M. Hassan, M. Al-Hadabbi, A. Al-Hamdi

Journal of Agricultural and Marine Sciences

Samples of leaflets and fruits at different stages were collected from 6 “on-palms” and 6 “off-palms” (15-16 years) of the Fard Cultivar. Samples were dried, ashed and digested. Macro and micronutrient concentrations of K, Ca, Mg,Na, Fe, Zn, Cu and Mg were determined by ICP-AES and N was measured by Kjeldhal method. Significant changes in the elemental concentrations of leaf and fruit occurred between Kimri (green color) and Bisir (yellowish-red color) development stages. Potassium and Mg concentration was reduced in leaf and fruit. Calcium and Na were reduced in the fruit and increased in the leaf. Iron, Zn and Mn …

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Prediction Of Composition Of Broiler Chicken Excreta Using Near-Infrared Reflectance Spectroscopy, I. T. Kadim, W. Al-Marzooqi, O. Mahgoub, K. Annamalai Apr 2025

Prediction Of Composition Of Broiler Chicken Excreta Using Near-Infrared Reflectance Spectroscopy, I. T. Kadim, W. Al-Marzooqi, O. Mahgoub, K. Annamalai

Journal of Agricultural and Marine Sciences

Near-infrared reflectance spectroscopic (NIRS) calibrations were developed for the prediction of the content of dry matter (DM); nitrogen (N), ether extract (EE), neutral detergent fibre (NDF), acid detergent fibre (ADF), gross energy (GE), calcium (Ca) and phosphate (P) in broiler excreta samples. The chemical composition of broiler excreta was determined by the conventional chemical analysis methods in the laboratory and compared with NIRS. Excreta samples (n = 72) were oven dried (60 oC) and analyzed for DM, N, EE, NDF, ADF, GE, Ca and P. The determined values (mean ± SD) were as follows: DM: 31.46 ± 7.65 (range:19.14 - …

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Handling Practices During Distribution Of Kinnow-Mandarins (Citrus Nobilis X Citrus Deliciosa) Used For Preparation Of Fresh-Squeezed Juices And Their Effects On Microbiological Safety, M. Ghosh, A. Ganguli, M. Kumar Apr 2025

Handling Practices During Distribution Of Kinnow-Mandarins (Citrus Nobilis X Citrus Deliciosa) Used For Preparation Of Fresh-Squeezed Juices And Their Effects On Microbiological Safety, M. Ghosh, A. Ganguli, M. Kumar

Journal of Agricultural and Marine Sciences

The objective of this study was to assess the microbiological safety of Kinnow-mandarins (Citrus nobilis X Citrus deliciosa) used for preparation of fresh squeezed juices by street vendors. One hundred and fifty Kinnow mandarin samples were collected from different points in the distribution chain from the same lot, washed and aliquots of the wash samples were analyzed for total aerobes, Staphylococcus, total and fecal coliforms, Salmonella and Shigella. Although, there was no notable increase in the total aerobic, total or fecal coliform counts, total staphylococcal counts increased significantly (P<0.05) during distribution to street vendors; seventy-two samples from the street vendors showed the presence of coagulase positive Staphylococcus aureus, twenty-three of these produced enterotoxins B and C. Salmonella and Shigella were not detected in any of the samples. Sources of high numbers of enterotoxigenic S. aureus were traced to unhygienic manual handling by middle level buyers and by street vendors. The results of our study demonstrate the poor microbiological quality of Kinnow-mandarins, the possible entry points of contaminants in the distribution chain of these fruits and unhygienic vending practices. Appropriate intervention measures are needed to ensure safe fresh squeezed juices for consumers.

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Effect Of Exogenous Hormones (Naa, Ba, Ga3, And Ethephon), Chemical Inhibitors (Mh And Cip) And Low Temperature On Sprouting Of Onion Bulbs, Aiiium Cepa L., N. Benkeblia Apr 2025

Effect Of Exogenous Hormones (Naa, Ba, Ga3, And Ethephon), Chemical Inhibitors (Mh And Cip) And Low Temperature On Sprouting Of Onion Bulbs, Aiiium Cepa L., N. Benkeblia

Journal of Agricultural and Marine Sciences

The effects of exogenous hormones (ABA, NAA, BA, GA; and ethephon) and chemical inhibitors (MH and CW), associated with cooling, on sprouting of dormant (freshly harvested) and non dormant (kept six months at 5-6 °C) onion bulbs were investigated. Effects of NM and BA on the sprouting of the bulbs were similar, particularly when associated with cooling. Cooled + NAA and BA treated dormant bulbs, both sprouted after lo weeks, while non-cooled bulbs sprouted after 10 and 12 weeks, respectively. Non-dormant bulbs sprouted after 3 and 4 weeks, respectively. No significant effect of MH, ClP and STS on sprouting of …

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Food Safety And Chemical Contaminants: An Overview A, A. Ali, M.H. Akhtar Apr 2025

Food Safety And Chemical Contaminants: An Overview A, A. Ali, M.H. Akhtar

Journal of Agricultural and Marine Sciences

Food safety is a major consumer’s concern worldwide. Although several incidences of food poisoning have placed microbial contamination on the forefront during recent years, health risks due to chemical contamination still remain high. The most often cited chemical contaminants are derived from a variety of sources such as pesticides, environmental chemicals (PCBs. dioxin, heavy metals including lead, mercury), chemical contaminants as a result of food processing (acrylamide, nitrosamines etc.), naturally occurring toxicants (glycoalkaloids, mycotoxins, antinutritives etc), chemicals migrating from packaging materials, veterinary drugs and other chemical residues. In addition to the presence of unintentional contaminants, the quality and safety of …

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Effect Of Anoxia On Respiration Rate (Fermentative Index) And Ethanol Production Of Onion Bulbs (Allium Cepa L.), N. Benkeblia, N. Shiomi Apr 2025

Effect Of Anoxia On Respiration Rate (Fermentative Index) And Ethanol Production Of Onion Bulbs (Allium Cepa L.), N. Benkeblia, N. Shiomi

Journal of Agricultural and Marine Sciences

The physiological behavior, including carbon dioxide production, fermentative index (FI) and ethanolic production of onion bulbs kept under total anoxia (l00% N2) was investigated. During the first 24 hours, carbon dioxide production increased from 0.01 to 1.56 kPa Co2, and the average rate of the increase in CO2; production between 0 and 24 hours was 0.09 kPa/h. The Q10, of the fermentative index was l.9. Ethanol produced by onion bulbs kept under anoxia during 6 hours was temperature dependent, and was 0.563 and 0.760 pmol kg-1h-1 at 10 and 20°C respectively, while at 4°C the quantity produced was not detected. …

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Antimicrobial Activity Of Natural Inhibitors Against Salmonella Typhimurium, A.S. Mothershaw, M. Ai-Ruzeiki Apr 2025

Antimicrobial Activity Of Natural Inhibitors Against Salmonella Typhimurium, A.S. Mothershaw, M. Ai-Ruzeiki

Journal of Agricultural and Marine Sciences

A range of herbs and spices are known to possess antibacterial activity as a consequence of their chemical composition. The sensitivity pattern of S. typhimurium ATCC 14082 to a range of these natural inhibitors was determined by measuring the zones of growth inhibition produced by individual herbs or spices. The herb and spice samples caused different levels of growth inhibition with S. typhimurium ATCC 14082. In general, S. typhimurium ATCC 14082 demonstrated considerable resistance to the antimicrobial activity of these inhibitors. Only cinnamon and garlic produced zones of growth inhibition. The antimicrobial activity of the garlic remained stable during mild …

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Micronutrients As Impurities Of Inorganic Fertilizers Marketed In Saudi Arabia, A.S. Modaihsh, A.E. Abdallah, A.S. Mashhady Apr 2025

Micronutrients As Impurities Of Inorganic Fertilizers Marketed In Saudi Arabia, A.S. Modaihsh, A.E. Abdallah, A.S. Mashhady

Journal of Agricultural and Marine Sciences

Inorganic fertilizers with major nutrients are likely to be contaminated with some micronutrients. Fertilizers, utilized in Saudi Arabia, were analyzed for their total and water-soluble content of Fe, Zn, Mn and Cu. They represented three categories namely: phosphatic, solid multiple nutrient fertilizers (SMNF) and water-soluble multiple nutrient fertilizers (WSMF). Total iron content in examined fertilizers was higher in phosphatic fertilizers and lower in WSMF. Nevertheless, only a very small portion of the total iron content is likely to be available to plants. It was estimated, on the basis of total content, that almost 2 g of iron would be applied …

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Microbiological, Physico-Chemical, And Biochemical Changes During The Ripening Of A Camembert Cheese Made From Pasteurized Cow’S Milk, N. Guizani, M. Ai-Mugheiry, M. Al-Ruzeiki Apr 2025

Microbiological, Physico-Chemical, And Biochemical Changes During The Ripening Of A Camembert Cheese Made From Pasteurized Cow’S Milk, N. Guizani, M. Ai-Mugheiry, M. Al-Ruzeiki

Journal of Agricultural and Marine Sciences

Camembert cheese was manufactured from pasteurized cow’s milk by the traditional method in order to determine the changes in the microflora, physico-chemical, and biochemical characteristics over 30-day ripening period. The total bacteria counts were high in cheese throughout ripening with lactic acid bacteria being the main microbial group both on the surface as well as in the center of the curd. However, the microbial activity is more important on the surface than in the center. Each group of microorganisms showed a typical variation during ripening on the surface and in the center. External heterogenous microflora, with high population of yeast, …

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The Nutritional Status Of Some Horticultural Crops In Salalah Region, Sultanate Of Oman, M.M. El-Fouly, M.M. Shaban Apr 2025

The Nutritional Status Of Some Horticultural Crops In Salalah Region, Sultanate Of Oman, M.M. El-Fouly, M.M. Shaban

Journal of Agricultural and Marine Sciences

A field survey has been conducted in Salalah region, Sultanate of Oman to evaluate the nutrient status of some horticultural crops and the respective soils. Soil and leaf samples were collected and analyzed. Soils were found to be characterized by high pH, high CaCO3 content, low or very low micronutrient contents. The unfavorable conditions caused nutrient deficiencies within the plant tissues. To correct the situation, fertilizer use should be based on soil testing and plant analysis, as well as information on farming system and farm management. Use of micronutrient fertilizers should be considered as a part of the fertilizer regime.

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Microflora And Physical-Chemical Characteristics Of Omani Laban, N. Guizani, K. Al-Ramadani Apr 2025

Microflora And Physical-Chemical Characteristics Of Omani Laban, N. Guizani, K. Al-Ramadani

Journal of Agricultural and Marine Sciences

Fifteen samples of Laban made at home in three Omani regions were subjected to physical-chemical and microbiological analysis. Laban had an average titratable acidity, pH, fat, protein and total solids of 1.12%, 3.98, 1.I2%, 2. 11% and 6.29%, respectively. The microbial flora of traditional Omani laban was found to be predominantly mesophilic lactococci. and homofemenentative lactobacili. The mean Lactococci and lactobacilli counts were 1.3 x 10 8 and 2.4 x 10 6/ml respectively. The main microbial types involved in the manufacture of Omani laban were Lactoeoccus lactis ssp lactis. Lacrococcus locus ssp locus biov. Diacetylactis, Lactococcus lactis ssp, Cremoris. and …

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Viscoelasticity Of Oxidised Starch And Low Methoxy Pectin In The Presence Of Glucose Syrup, S. Kasapis Apr 2025

Viscoelasticity Of Oxidised Starch And Low Methoxy Pectin In The Presence Of Glucose Syrup, S. Kasapis

Journal of Agricultural and Marine Sciences

The structural properties of mixtures with pectin, oxidised starch and glucose syrup were investigated using small deformation dynamic oscillation. The composition of the mixture, pH and temperature course of analysis were designed to imitate the development of confectionery products. In the absence of added calcium, preparations of low methoxy pectin with glucose syrup form viscous solutions, which remain crystal-free at subzero temperatures. Samples of oxidised starch and glucose syrup. on the other hand, exhibit solid-like behavior due to the crystalline nature of the amylose-like helices. Mixtures of the two polyssacharides with the co-solute show clearly the phase inversion from liquid …

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Effect Of A Saline Nutritional Regime On Tomato Fruit Yield And On Enhancement Of Fruit Quality, S. A. Ai-Rawahy, S.M.E. Satti, M. V. Lopez Apr 2025

Effect Of A Saline Nutritional Regime On Tomato Fruit Yield And On Enhancement Of Fruit Quality, S. A. Ai-Rawahy, S.M.E. Satti, M. V. Lopez

Journal of Agricultural and Marine Sciences

The effect of a saline nutritional regime on tomato (Lycopersicon esculentum Mill.) fruit yield and fruit quality enhancement for five cultivars (CLN 425, Pearson, Napoli, Hymar, and Sierra) was studied. The saline nutrient treatment consisted of (i) a control. Hoagland's solution (EC=2.5 mScm -1), (ii) Hoagland's solution + 50 mM NaCl (EC=7.46 mScm-1), (iii) Hoagland's solution + 50 mM NaCl + 4 mM K2SO4 + 2 mM H3PO4 (EC=8.31mScm-1), (iv) same as in (iii)3 but applied when plants were at 50% flowering, then the plants were irrigated with Hoagland’s solution as in the control, and (v) same as in (iii) …

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Livestock Environment Prospects For The 90'S, W. W. Thatcher Apr 2025

Livestock Environment Prospects For The 90'S, W. W. Thatcher

Journal of Agricultural and Marine Sciences

When projecting livestock environmental prospects for the 1990's. it is critical to recognize the multidimensional nature of managing livestock species under hot environments. This paper identifies potential critical physiological windows during the life cycle of the animal that are sensitive to heat stress and responsive to environmental modification. Ovarian follicular development appears to be sensitive to heat stress leading to reductions in intensity of oestrus and subsequent fertility. Periods of follicular development that are sensitive to heat stress have not been defined. With current improved systems to alter the microenvironment of animals. the period of embryonic sensitivity to heat stress …

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Animal Health In The Tropics, M.R. Jainudeen, A. R. Sheikh-Omar Apr 2025

Animal Health In The Tropics, M.R. Jainudeen, A. R. Sheikh-Omar

Journal of Agricultural and Marine Sciences

Most developing countries in Africa and Asia are located in the tropics (23° north and south of the equator). The poor productivity of ruminants in these countries is mostly due to inadequate nutrition, infectious diseases, low rates of reproduction, poor genotype, high ambient temperatures and socioeconomic constraints. In addition to infectious diseases which have long since been eradicated or brought under control in developed countries, there are diseases unique to the tropical environment. In the past, the diagnosis of most diseases was based on serological tests. The enzyme-linked immunosorbent assay (ELISA), a rapid method of identifying viral and bacterial infections, …

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Sheep And Goat Production In Hot Climates, L. Reynolds Apr 2025

Sheep And Goat Production In Hot Climates, L. Reynolds

Journal of Agricultural and Marine Sciences

This paper discusses the reasons for keeping small ruminants and investigates the areas in which technological improvements are likely to have most impact in increasing the output from sheep and goat enterprises in hot climates. The most important areas in which biological manipulation can raise productivity lie in the areas of improved nutrition and increased survival of young animals. Nutritional studies of animals receiving diets of natural tropical grazing and browse may not reflect the rations actually consumed due to the ability of animals to select high quality forage from what is on offer. One suggestion is made as to …

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Faculty Senate Minutes 2025-04-08, The University Of Texas Rio Grande Valley. Faculty Senate. Apr 2025

Faculty Senate Minutes 2025-04-08, The University Of Texas Rio Grande Valley. Faculty Senate.

Faculty Senate Minutes

No abstract provided.

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Metabolite Analysis To Understand Factors Limiting Microbial Fermentation At High Substrate Concentrations, Bishal D. Sharma Apr 2025

Metabolite Analysis To Understand Factors Limiting Microbial Fermentation At High Substrate Concentrations, Bishal D. Sharma

Dartmouth College Ph.D Dissertations

Clostridium thermocellum, a thermophilic anaerobic bacterium, holds promise as a biocatalyst for conversion of lignocellulosic biomass into biofuels. This microbe has been subjected to various metabolic engineering strategies, including the deletion of genes encoding secondary fermentation products such as H₂, formate, acetate, and lactate, as well as the expression of heterologous genes to redirect carbon flux toward ethanol production. Despite these efforts, achieving economically viable ethanol titers remains a challenge. We hypothesized that studying how intracellular metabolite concentrations change as fermentation stops could reveal metabolic bottlenecks or regulatory mechanisms limiting ethanol production at high titers. However, metabolomics studies at …

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