El Taref Province, Algeria

University of El-Tarf

El Taref Province, Algeria
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PubMed | University of Bari, University of El-Tarf, French National Institute for Agricultural Research, Blida University and Abou Bekr Belkaid University Tlemcen
Type: | Journal: Heredity | Year: 2016

Algeria represents a reservoir of genetic diversity with local sheep breeds adapted to a large range of environments and showing specific features necessary to deal with harsh conditions. This remarkable diversity results from the traditional management of dryland by pastoralists over centuries. Most of these breeds are poorly productive, and the economic pressure leads farmers to realize anarchic cross-breeding (that is, not carried out in the framework of selection plans) with the hope to increase animals conformation. In this study, eight of the nine local Algerian sheep breeds (Dmen, Hamra, Ouled-Djellal, Rembi, Sidaoun, Tazegzawt, Berber and Barbarine) were investigated for the first time by genome-wide single-nucleotide polymorphism genotyping. At an international scale, Algerian sheep occupied an original position shaped by relations with African and European (particularly Italian) breeds. The strong genetic proximity with Caribbean and Brazilian breeds confirmed that the genetic make-up of these American breeds was largely influenced by the Atlantic slave trade. At a national scale, an alarming genetic dilution of the Berber (a primitive breed) and the Rembi was observed, as a consequence of uncontrolled mating practices with Ouled-Djellal. A similar, though less pronounced, phenomenon was also detected for the Barbarine, another ancestral breed. Genetic originality appeared to be better preserved in Tazegzawt, Hamra, Dmen and Sidaoun. These breeds should be given high priority in the establishment of conservation plans to halt their progressive loss. For Berber and Barbarine that also occur in the bordering neighbor countries, urgent concerted transnational actions are needed.Heredity advance online publication, 14 September 2016; doi:10.1038/hdy.2016.86.

Merzoug S.,Annaba University | Merzoug S.,University of El-Tarf | Toumi M.L.,Annaba University | Boukhris N.,Annaba University | And 3 more authors.
Pharmacology Biochemistry and Behavior | Year: 2011

Chemotherapeutic regimens have been indicated to negatively impact the quality of life for patients. Adriamycin (ADR) is an effective chemotherapeutic agent widely employed for the treatment of human's malignancies; however, it may cause serious side effects. The present study was aimed at investigating the effects of acute administration of ADR on cognitive alterations, brain oxidative status and immune dysregulation in male Wistar rats. Treated animals received a single intraperitoneal injection of ADR (7 mg/kg). Control ones received physiological saline only. Behavioral effects were tested in the elevated plus-maze and the open field which showed that drug-treated rats displayed anxious behavior and deteriorations in the locomotive and exploratory activities over the 72 h following ADR injection as compared to controls. Assessment of brain antioxidant capacity in ADR-injected animals revealed an increase in glutathione-S-transferase activities and malondialdehyde levels while a decrease in glutathione concentrations when compared with the vehicle-treated group. Our results indicated that ADR administration decreased total leukocyte, lymphocyte and granulocyte counts, while enhanced monocyte levels. Moreover, white blood cells (WBC) relative counts in ADR-treated rats showed a significant increase in monocytes and granulocytes and a decrease in lymphocytes as compared to controls. This study suggests that ADR-related cognitive impairments are associated with brain oxidative stress and myelosuppression. © 2011 Elsevier Inc. All rights reserved.

Toumi M.L.,Annaba University | Merzoug S.,Annaba University | Merzoug S.,University of El-Tarf | Baudin B.,University Paris Est Creteil | Tahraoui A.,Annaba University
Pharmacology Biochemistry and Behavior | Year: 2013

This study was performed in rats to investigate the effect of a psychogenic stress during late gestation on the immediate behavior and brain oxidative status in dams as well as on the immune cell counts in their offspring up to weaning. Besides, the ability of quercetin (a natural flavonoid) to prevent stress effects was evaluated. Quercetin was orally administered for 6 consecutive days before the pregnant rats were acutely exposed to predator stress on gestational day 19. Post-stress corticosterone level, brain oxidative stress parameters and anxiety-like behavior were assessed in dams, whereas immune cell counts were postnatally determined in both male and female pups. Predator stress caused an oxidative stress in the brain and elicited an elevation in plasma corticosterone with concomitant behavioral impairment in dams. Prenatally-stressed pups mainly showed a decrease in total leukocytes and lymphocytes along with monocytosis and granulocytosis, but these changes were sex-dependent throughout the postnatal period studied. Quercetin pretreatment blocked the stress-induced corticosterone release and alleviated the brain oxidative stress with the maternal anxiety measures being slightly attenuated, whereas its effects on the offspring immune cell counts were mostly revealed at birth. Our findings suggest that late gestational exposure to traumatic events may cause anxiety symptoms in dams, in which corticosterone and brain oxidative stress play a certain role, and trigger negative immune changes in the early postnatal life of progeny. Notably, quercetin intake before such adverse events seems to be beneficial against negative outcomes in both dams and offspring. © 2013 Elsevier Inc.

Angucl F.,University of El-Tarf | Amirat A.,Université Mohamed Chérif Messaadia de Souk-Ahras | Bounour N.,Annaba University
Proceedings of the 2013 11th International Symposium on Programming and Systems, ISPS 2013 | Year: 2013

Model Driven Software Engineering has matured over the last few years and is now becoming an established technology. As a consequence dealing with evolving metamodels and the necessary co-evolution of instances of this metamodel is becoming increasingly important. Several approaches have been proposed to solve model co-evolution problem. In this paper, Firstly, existing approaches in this area are analyzed to define requirements of our approach, namely automaticity, reuse, expressiveness and intelligence. After that we present a new approach CBRMig towards a solution to metamodel and model co-evolution problem. The core of our proposal is using a case based reasoning system that automates the process of creation and selection of cases to assist with the generation of a migration algorithm used for adapting models in response to metamodel evolution. © 2013 IEEE.

Amrani A.,University of El-Tarf | Nasri H.,University of El-Tarf | Azzouz A.,University of El-Tarf | Kadi Y.,Laboratoire Central Of Pathologie | Bouaicha N.,CNRS Ecology, Systematic and Evolution Laboratory
Archives of Environmental Contamination and Toxicology | Year: 2014

Microcystins (MCs) produced from cyanobacteria can accumulate in freshwater fish tissues. In this study, variations in these toxins content were examined monthly in water samples and two species of fish in Lake Oubeira, Algeria, from April 2010 to March 2011. During the study period, MCs were analyzed using protein phosphatase type 2A (PP2A) inhibition assay. In lake water, total (dissolved and intracellular toxins) MC concentrations by PP2A ranged from 0.028 to 13.4 μg equivalent MC-LR/l, with a peak in September 2010. MC-LR was the dominant variant (90%of the total) in water samples, followed by MC-YR and MC- (H4)YR. The highest MC concentration in the omnivorous common carp (Cyprinus carpio) was found in the order intestine > hepatopancreas > muscle; however, in the carnivorous European eel (Anguilla anguilla) the order was liver > intestine > muscle. Highest MC concentrations in the intestine tissue of the common carp were found between August and November 2010 where high MC concentrations were detected in water samples, whereas high levels of MCs in the liver of the European eel were found later between January and February 2011. During the entire period of study, the World Health Organization (WHO) lifetime limit for tolerable daily intake was exceeded only in common carp muscle. © Springer Science+Business Media 2014.

Merzoug S.,Annaba University | Merzoug S.,University of El-Tarf | Toumi M.L.,Annaba University | Toumi M.L.,Dr. Yahia Fares University Center of Médéa | Tahraoui A.,Annaba University
Naunyn-Schmiedeberg's Archives of Pharmacology | Year: 2014

This study was designed to evaluate the effect of quercetin, a natural flavonoid, on behavioral alterations, brain oxidative stress, and immune dysregulation caused by a chemotherapeutic agent, Adriamycin (ADR; 7 mg/kg of body weight). Different subsets of male Wistar rats were used to determine the benefit of quercetin on ADR-related depression-like and anxiety-like behaviors in the forced swim test, open field, and elevated plus maze, respectively. Quercetin (60 mg/kg of body weight) was administered 24, 5, and 1 h before the test session of forced swim test (FST) or at the same time points before the elevated plus maze/open field (EPM/OF) tests. Other subsets of rats were sacrificed after quercetin injections to assess the plasma corticosterone level, the brain oxidative status, and the immune cell count. Our results indicate that quercetin alleviated the anxio-depressive-like behavior, attenuated the brain oxidative stress, and suppressed the corticosterone excess that appeared following ADR treatment. The ADR-induced immune disturbance was slightly diminished after quercetin administration, especially for the lymphocyte count. This study suggests that quercetin can mitigate the neurobehavioral and immunological impairments that manifest in ADR-treated rats. Therefore, the combination of quercetin treatment with the chemotherapeutic regimen seems to be beneficial against chemotherapy-related complications. © 2014 Springer-Verlag Berlin Heidelberg.

Mayouf R.,University of Batna | Arbouche F.,University of El-Tarf
Livestock Research for Rural Development | Year: 2015

The main objective of this study was to determine the quality of the pasture in the arid region of Algeria. Three dominant shrubs ( Haloxylon schmittianum, Anabasis articulata and Astragalus armatus) were analyzed to characterize the chemical properties, in vitro organic matter digestibility and nutritional value. Samples were collected during a period of one year (from December 2011 to November 2012) to evaluate the variations in the chemical composition and nutritional characteristics between the dry and wet seasons. Results showed that the three species differed significantly in their nutrient composition in both seasons except for the Ash and organic matter (OM) which did not differ between seasons. Crude protein (CP) and neutral detergent fiber (NDF) differed significantly between species and among the seasons. The Crude protein (CP) content of the browse species was higher in the wet season compared to dry season, A. Articulata had the highest values (173 and 112 respectively), the lowest forA. armatus (126 and 85 respectively). The NDF values ranged between 417 in H. schmittianum and 446 in A. armatus for the wet season while for the dry season on DM basis, the values ranged from 429 to 491 in H. schmittianum and A. armatus, respectively.In vitro Organic matter digestibility (IVOMD), digestible organic matter (DOM) and estimated net energy (NE) varied significantly between species and seasons, H. shmittianum had the highest values during the both seasons, while A. armatus had the lowest values. Generally, apart from the differences among species within a same season, for each species, there was a significant difference in nutrient composition between the dry and wet season. The present study showed that the three fodder shrubs had a good nutritive value for wet season feed, while A. armatus require a supplementation of nitrogen for dry season. However, further research is needed to assess the changes on the nutritional value of pastoral shrubs at different phenological stages © iForest – Biogeosciences and Forestry.

Nadir G.A.,University of El-Tarf
Livestock Research for Rural Development | Year: 2015

The degradation of steppic ecosystems in Eastern Algeria is mainly due to overgrazing. We looked for a quick method of estimating the pastoral value (PV) to respect the rational grazing management. Several formulas have been proposed, but an element of these formulas is empirical. The formula that we offer on the basis of in-situ measurements gives very conclusive results, with excellent correlations between PV and pastoral production. The PV (0 to 100) is calculated using the specific contribution (CSI) of each species and stratification observed in the field. We hope that this method will be used to value the pastoral decision tool to prevent regression of steppe ecosystem that has become recurrent in recent years. © 2015 Fundacion CIPAV. All rights reserved.

Merdaci L.,University of El-Tarf | Chemmam M.,8 May 1945 University of Guelma
Livestock Research for Rural Development | Year: 2015

The ionic balance of the rations and its impact on the zootechnical health status and performances was the object of many studies. To take account in rationing of it, its preliminary evaluation is necessary. The objective of this work was to quantify the acido-basic balance of food and the modes distributed to the dairy cows in various dairy breedings of the Algerian North-East. The range used is made up of coarse food: the Egyptian clover (bersim), sorghum for the green and the ensilage, barley in green, the tare-oats mixture for the hay and the ensilage, straws of cereals and barley in grain for the concentrate. The estimate of the average quantities of food at summer realized 1 time per week by weightings. The proportioning of minerals at summer carried out by the classical methods of analysis. The dietary electrolytic balance (DEB) is estimated starting from equation (DEB)=Na + K - Cl, expressed in dry matter mEq/kg-1 of the total ration. The contents of strongions of studied food are relatively high, 1,9±0,42 vs 3,37±0,67% and 0.2±0,01 vs 1±0,04%; respectively for K+ and Na+. The FE of fodder varied with the form of use +114±13 for the straw at +776±151 mEq/kg-1 of DM for ensilage of sorghum. Balances of the current rations of the cows dried up containing cereal straws (+400±110 mEq/kg-1 of DM) and containing hay (+504±65 mEq/kg-1 of DM), without the contribution of concentrate. The balances of the current rations distributed to the cows in lactation are spread out between +481±71 and +688±168 mEq/kg-1 of DM. The dietary electrolytic balance is strongly influenced by the highly content of K+, out most grounds in the north of Algerian are rich in this element. The dairy breeding being concentrated in the north of the country, it will be necessary to plan to produce fodder in the grounds of interiors regions. © 2015, Fundacion CIPAV. All rights reserved.

PubMed | Aix - Marseille University, National Veterinary School of Algiers, Université Mohamed Chérif Messaadia de Souk-Ahras and University of El-Tarf
Type: | Journal: Comparative immunology, microbiology and infectious diseases | Year: 2017

Using qPCR, standard PCR and/or sequencing, we investigated the presence of tick-associated microorganisms in ticks and blood from sheep and goats from Souk Ahras, Algeria. Borrelia theileri, was detected in (7/120, 5.8%) blood from sheep and (13/120, 10.8%) goats. Anaplasma ovis was screened in (38/73, 52%) Rhipicephalus bursa and (5/22, 22.7%) R. turanicus and in (74/120, 61.7%), (65/120, 54.2%) blood of sheep and goats respectively. Coxiella burnetii tested positive in R. bursa (4/73, 5.5%) and (7/120, 5.8%) blood of sheep and (2/120, 1.7%) goats. Theileria ovis was detected in (50/147, 34%) R. bursa and (3/22, 13.6%) R. turanicus and in (64/120, 53.3%) blood of sheep and (25/120, 20.8%) goats. Babesia ovis was screened positive in (23/147, 15.6%) R. bursa and (7/48, 14.6%) R. turanicus. Our findings expand knowledge about the repertoire of tick-borne microorganisms present in ectoparasites and/or the blood of small ruminants in Algeria.

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