النشر العلمي

  • إشكالية توظيف الأموال العامة في الدولة

published in مجلة القلزم للدراسات القانونية والسياسية

  • Economic impact of natural gastrointestinal parasitic infection on fattening performance of Sudan desert sheep (experimental trial)

This study was conducted to evaluate the impact of natural gastrointestinal parasitic infection on growth and economics production of Sudan Desert sheep. Forty-eight naturally infected lambs were divided into 2 groups of 24lambs each. One group was treated for internal parasites while the other was left naturally infected. Each group was then divided into two groups according to age (old two years and young milk teeth) and dietary energy level (high and low). The design ended up with eight groups of 6 individuals each which were The design ended up with eight groups of 6 individuals each which were old treated high energy (OTHE), old infected high energy (OIHE), old treated low energy (OTLE), old infected low energy (OILE), young treated high energy (YTHE),young infected high energy (YIHE), young treated low energy (YTLE) and young infected low energy (YILE). They were then fattened for 60 days during which feedlot performance, mortality rate, purchase prices, sales and margins were calculated. The growth parameters as average daily gain and final body showed significantly (P< 0.001) high differences among treatments. Margin percent of sales of (OTHE) was 23.80% while (OILE) lost 40% of their total cost. Although (YTHE) ranked second in term of performance, but they achieved the best profit which was 5.7% more than the profit of (OTHE) because of less dry matter consumption. The number of sold lambs for (OILE) and (YILE) decreased by 50% due to mortality. Total margin of (OTHE) was 98.08 $, while (OIHE) was sold for 36.36% less profit. The former group gained 82.81% more profit than (OTLE). Although older treated lambs gained more weight than younger ones but economically younger lambs were more profitable. Total sales revenue of (OTHE) was 510 $ with 19.2% total margin, while the total sales revenue of (YTHE) was 480 $ achieving 24.9% total margin.

published in 5th Animal Health andVeterinary Medicine Congress,Valencia, Spain

  • Effect of Compensatory Growth on Carcass Characteristics of Sudanese Desert Lambs

This study was conducted to detect the effect of compensatory growth on carcass characteristics of the Sudanese desert lambs. Twelve lambs (Hamri ecotype) of the same initial weight (23±16 Kg) were used in this experiment. The animals were randomly divided into two groups. The first group (A) was adlibitum offered a high energy diet (10. 50 MJ/Kg DM) for 60 days. While the second group (B) was given a low energy diet (8.03 MJ/Kg DM) throughout the same period (60 days).Lambs of the second group were found just to maintain their weight. After that period the lambs from the second group were offered the high energy diet (10. 50 MJ/Kg DM) until they reached the final weight obtained by the first group. It spent 45 days to reach that weight. At the end of the experiment four animals from each group were chosen randomly for slaughter to obtain carcass data and physical and chemical meat analysis. The results showed that hot and cold carcass weights, dressing percentage were not significantly different between treatments. Similarly dressing percentage was not significantly different between treatments. Body components were not significantly different between treatments except mesenteric fat which was significantly (p<0.05) higher in rehabilitated lamb group. The proportion of muscle and fat were significantly greater in the rehabilitated lambs than in free fed lambs. Meat chemical analysis were not significantly different between the two groups, however the fat was significantly (p<0.05) greater in rehabilitated lamb group. Meat quality attributes showed significantly higher colour co-ordinates (L) and (a) and superior water holding capacity in rehabilitated lambs group than in free fed lamb group.

published in Journal of Agricultural Science and Engineering

  • Effect of Gastrointestinal Parasites and Dietary Energy Level on Sheep

All praises and thanks are due to Almighty and majesty Allah and Peace be upon all His prophets. May Allah make this effort solely for His sake and accept it. What is the recompense for someone who put his great knowledge, keen advices and patience before a student!?!. With deep respect and sincerity I express my appreciation and gratitude to the compassionate and concerned Professor Salih Ahmed Babiker for his wise and kind supervision rather than encouragement and guidance throughout the PhD course. The far above the ground skies will by no means be reached or replaced. Prayers and wishes that, at all times he stays well and sound. With pleasure and good cheer I admire Professor Hamid Sulieman Abdalla for his excellent and brilliant assistances, understanding and sound judgments. Thanks to him for his patience, kindness plus full of pity and great help. I cannot offer enough thanks or remuneration to Dr. Adil Elkhidir Bala for his constant and continuous support, except praying humbly and earnestly, for Allah to attain him full health and success. Professor Amir Mohammed Salih the scientific father of all, I admire his unlimited support throughout the PhD course.

published in LAP LAMBERT Academic Publishing

  • Sudanese Withania somnifera: a potential control agent for plant microorganisms

For centuries plants have been used throughout the world as pesticides, drugs and remedies for various diseases. However, pesticides and drugs in general, tend to be very expensive particularly so for the developing countries. Comparative cost is often the deciding factor in choice of control methods. As a result it can be deduced that direct use of crude extracts or dried plant parts, where possible, would be of great value. This study aimed to evaluate the presence and the activity of the natural products in the Sudanese-chemotype Withania somnifera prior to their direct use as crude extract and/or powdered dried plant-parts in the field. The methanolic extract of the aerial parts of Withania somnifera (L) Dunal (Solanaceae) showed interesting antifungal activity against Fusarium nivale (syn Microdochium nivale) and yielded many withanolides after column and preparative HPLC separation which were guided by this antifungal activity (% inhibition zone). An equal volume of water was added to the concentrated methanol and partitioned with ethyl acetate. The active fraction was chromatographed first on a short silica gel (kieselgel) column. Using the chromatogram and a TLC single-spot analysis the collection was combined in 21 fractions. Then, the active Fraction(s) was re-chromatographed on gel exclusion over sephadex LH-20 in a long column. The active subfractions were then subjected to preparative reversed phase HPLC (Waters 600, multisolvent system) and all tubes were collected in 10 subfractions. The active subfractions were then subjected to preparative reversed phase HPLC (Waters 600, multisolvent system) and each peak was collected manually and, the purified active peaks were then subjected to identification. The structures of Withaferin A and 2, 3-deoxy 3methoxy Withaferin A were determined by NH3-DCI-MS (and MS-MS) and NMR spectroscopy. Against Swiss mice Mus musculus (mouth injection using adaptable syringe) these products showed no acute toxicity up to 20 g plant/kg body weight (the highest dose used). It could be concluded that there are many encouraging aspects regarding the potential for a direct use of such crude extract and powdered dried plant-parts against such plant microorganisms under Sudanese environmental conditions: this plant is widely distributed in Sudan, very rich in withanolides, and the quantity is sufficient e.g. the quantity of withaferin A was estimated in the present work to be more than 40 mg/kg plant material. Additionally, this concentration may indicate that the amount of plant material required would not be high. Furthermore, the preparation of the crude-extract or the powdered form would not be expensive. Moreover, in this study no acute toxicity was recorded up to 20 g plant/kg body weight (the highest dose used). In the foreseeable future, further research is needed to determine activities against broader spectrum of plant local causal organism strains of fungi and bacteria both in the laboratory and the field, the ideal formulation and concentrations for field application.

Pendant des siècles, les plantes ont été utilisées à travers le monde comme pesticides, médicaments et remèdes pour différentes maladies. Cependant, les pesticides et les médicaments en général, ont tendance à être très coûteux, particulièrement pour les pays en développement. La comparaison des coûts est souvent le facteur décisif dans le choix des méthodes de contrôle. Par conséquent, on peut déduire que l’utilisation directe des extraits bruts ou des parties de plantes séchées, lorsque cela est possible, serait d’une grande valeur. Cette étude visait à évaluer la présence et l’activité des produits naturels dans les types chimiques Soudanais de Withaniasomnifera avant leur utilisation directe comme extrait brut et / ou poudre sechée et parties des plantes dans le domaine. L’extrait méthanolique des parties aériennes de Withaniasomnifera (L) Dunal (Solanacées) a montré une activité antifongique intéressante contre le Fusariumnivale (synMicrodochiumnivale) et a produit de nombreux withanolides après la colonne et la préparation à la séparation HPLC qui ont été guidés par cette activité antifongique (zone d’inhibition de l’%). Un volume égal d’eau a été ajouté au méthanol concentré et partagé avec de l’acétate d’éthyle. La fraction active a été Chromatographiée sur une première colonne de gel de silice courte (gel de silice). En utilisant du chromatogramme et une analyse TLC tâche unique, la collecte a été combinée dans 21 fractions. Ensuite, la fraction (s) active a été de nouveau soumis à une Chromatographie sur du gel d’exclusion sur Sephadex LH-20 dans une longue colonne. Les sous-fractions actives ont été ensuite soumises à une HPLC en phase inverse préparatoire (Waters 600, système Multi-solvant) et tous les tubes ont été prélevés dans 10 sous-fractions. Les sous-fractions actives ont été ensuite soumises à une HPLC en phase inverse préparatoire (Waters 600, système Multi-solvant) et chaque pic a été collecté et manuellement, les pics actifs purifiés ont été ensuite soumises à une identification. Les structures des withaferin A et 2, 3-désoxy-3 méthoxy withaferin A ont été déterminées par NH3-DCI-MS (et MS-MS) et par spectroscopie de RMN. Contre la souris suisse Musmusculus (injection de bouche en utilisant la seringue adaptable), ces produits n’ont montré aucune toxicité aiguë jusqu’à 20 g plante / kg de poids corporel (la dose la plus élevée utilisée). On pourrait en conclure qu’il y a de nombreux aspects encourageants concernant la possibilité d’une utilisation directe de cet extrait brut et de parties des plantes ou poudre séchée des parties de plante contre ces micro-organismes végétaux dans des conditions environnementales soudanaises: cette plante est largement distribué au Soudan, très riche en withanolides, et la quantité est suffisante, par exemple la quantité de withaferin A a été estimé dans le présent travail à plus de 40 mg/ kg de matériel végétal. En outre, cette concentration peut indiquer que la quantité de matériel végétal nécessaire ne serait pas élevée. En plus, la préparation de l’extrait brut ou sous forme de poudre ne serait pas coûteux. De plus, dans cette étude, aucune toxicité aiguë n’a été enregistré jusqu’à 20 g plante / kg de poids corporel (la dose la plus élevée utilisée). Dans un avenir prévisible, d’autres recherches sont nécessaires pour déterminer les activités contre le plus large éventail des souches des plantes locales de causalité de l’organisme de champignons et de bactéries à la fois en laboratoire et sur le terrain, la formulation idéale et les concentrations d’application sur le terrain

published in RUFORUM Institutional Agriculture

© 2016 University Of Gezira. All rights reserved | Design by Informatics Administration