DSpace Collection:https://dspace.univ-ouargla.dz/jspui/handle/123456789/100222024-03-29T08:32:00Z2024-03-29T08:32:00ZANALYSE DESCRIPTIVE ET FACTEURS D’ÉVOLUTION DES NUMÉRATIONS CELLULAIRES INDIVIDUELLES DU LAIT CHEZ DES PETITS TROUPEAUX BOVINS HORS SOL DANS LA RÉGION DE MONASTIR (TUNISIE)SADAK YoussefMIGHRI Leilahttps://dspace.univ-ouargla.dz/jspui/handle/123456789/100242019-05-08T11:41:23Z2015-12-01T00:00:00ZTitre: ANALYSE DESCRIPTIVE ET FACTEURS D’ÉVOLUTION DES NUMÉRATIONS CELLULAIRES INDIVIDUELLES DU LAIT CHEZ DES PETITS TROUPEAUX BOVINS HORS SOL DANS LA RÉGION DE MONASTIR (TUNISIE)
Auteur(s): SADAK Youssef; MIGHRI Leila
Résumé: The objective of this study is to analyze the variation of individual cell counts (CCI) of cows during an entire lactation while insisting on the effect of main variables of evolution. The monitoring was conducted on a sample of 40 non-grazing cattle farms in the region of Monastir (Tunisia). Mammary health diagnosis was performed by the method of direct cell count on individual cow milk using a cell counter of type Fossomatic4000. It appears from this study that CCI distribution, according to two rules estimation, gives two different results for the samples of healthy milk. In fact, 48% of samples correspond to a normal or healthy milk with CCI ≤ 200000 cell. / ml, while 57% of the samples are from healthy udders with CCI ≤ 300000 cell. / ml. It also noted that 66% of cows have arithmetic CCI > 200000 cell. / ml, whereas 52% of cows present geometric CCI > 200000 cell. / ml. In this overall context, and to better assess the distribution of CCI, it was used quartiles diagram which confirmed the reliability of using the geometric method for the study of CCI. In addition to the variation of CCI according to the study methodology, changes can result from physiological factors related to the cow. Indeed, the CCI are lower in the beginning of lactation for primiparas compared with the end of lactation and multiparas. For the relation between milk production and CCI, this latter was recorded lowest at peak lactation of cows. These results coincide exactly with those reported in previous studies
Description: Algerian Journal of Arid Environment2015-12-01T00:00:00ZCOMPOSITION AVIFAUNISTIQUE DANS UN REBOISEMENT DE PIN D’ALEP A CHBIKA (AIN MAÂBED-DJELFA, ALGERIE)SOUTTOU KarimSEKOUR MakhloufABABSA LabedGUEZOUL OmarCHOUKRI KarimaDOUMANDJI Salaheddinehttps://dspace.univ-ouargla.dz/jspui/handle/123456789/100352019-05-08T11:41:53Z2015-12-01T00:00:00ZTitre: COMPOSITION AVIFAUNISTIQUE DANS UN REBOISEMENT DE PIN D’ALEP A CHBIKA (AIN MAÂBED-DJELFA, ALGERIE)
Auteur(s): SOUTTOU Karim; SEKOUR Makhlouf; ABABSA Labed; GUEZOUL Omar; CHOUKRI Karima; DOUMANDJI Salaheddine
Résumé: In this study 38 birds species were listed in the main forest of Chbika by the method of the EFP and that of the IPA These species was distributed between 6 orders and 15 families whose 30 species were inventoried by the EFP and 26 species by the IPA the common species between both methods is 19. The order of Passeriformes was best represented with 10 families and 27 species. The dominant species counted by the EFP method was the Coal Tit (Periparus ater) and the Chaffinch (Fringilla coelebs) with 58 individuals each species (16.4%). While the Common Crossbill (Loxia curvirostra) and Crested Lark (Galerida cristata) were most counted by the I.P.A. methods with respectively 13.6% and with 12%.
Description: Algerian Journal of Arid Environment2015-12-01T00:00:00ZEFFET DE LA CONTRAINTE SALINE SUR LA GERMINATION ET LA CROISSANCE DE QUELQUES PROVENANCES ALGERIENNES D’ARGANIER (Argania spinosa L.)NASRI SouhilaBENMAHIOUL Benamarhttps://dspace.univ-ouargla.dz/jspui/handle/123456789/100332019-05-08T11:42:06Z2015-12-01T00:00:00ZTitre: EFFET DE LA CONTRAINTE SALINE SUR LA GERMINATION ET LA CROISSANCE DE QUELQUES PROVENANCES ALGERIENNES D’ARGANIER (Argania spinosa L.)
Auteur(s): NASRI Souhila; BENMAHIOUL Benamar
Résumé: In arid and semi-arid areas of the Mediterranean basin, the salinization of the soil constitutes one of
the most important abiotic factors limiting plant growth and the productivity for many cultures. The
introduction of tolerant plants to salinity is one of the techniques recommended to develop the soil
touched by this phenomenon. The argan belonged to these species with great potential. This work aimed
to compare the comportment of three provenances of argan collected from Tindouf and subjected to the
saline stress since the stage of germination. The seeds coming from Merkala, Oued-Bouyhadine and
Oued-El Gahaouane. The saline constraint was induced by the application of various NaCl
concentrations: 0; 4; 8 and 16 g.l -1. The effect of the saline stress on germination showed a variability of
tolerance between the various provenances tested. The seeds resulting from Oued Bouyadhine are most
resistant to salt, where the rate of germination was about 66.7 % in the presence of the highest salt
concentration tested. Therefore, the effect of saline constraint on the growth of young sowings was
analyzed. Results showed that the different growth parameters studied, vary according the provenance
studied. Indeed, the aerial part is more sensitive to salt than the root part for all provenance tested.
Moreover, the provenance of Merkala is shown most sensitive to the salinity stress.
Description: Algerian Journal of Arid Environment2015-12-01T00:00:00ZSITUATION DE LA REUTILISATION DES EAUX USEES EPUREES EN AGRICULTURE SAHARIENNE: CAS DE LA CUVETTE DE OUARGLABOUHANNA AmalDADDI BOUHOUN MustaphaSAKER Mohamed Lakhdarhttps://dspace.univ-ouargla.dz/jspui/handle/123456789/100272019-05-08T11:44:04Z2015-12-01T00:00:00ZTitre: SITUATION DE LA REUTILISATION DES EAUX USEES EPUREES EN AGRICULTURE SAHARIENNE: CAS DE LA CUVETTE DE OUARGLA
Auteur(s): BOUHANNA Amal; DADDI BOUHOUN Mustapha; SAKER Mohamed Lakhdar
Résumé: The reuse of treated wastewater can reduce the water deficit in the Saharan areas, especially in Ouargla. This research work in this area aims to study the situation of reuse of treated water in an agricultural perimeter of the basin of Ouargla. It is located north of the sewage treatment plant and supplied with water by it. Data collection was conducted through surveys and with the cooperation of farmers. The results obtained show that the operators are mostly adults. The rate of actual cultivated area reaches 45%. Most farms do not exceed one hectare. The family labor is the most used in the perimeter. The agriculture use the treated water for irrigation of the channel by mechanical pumping in the absence of conventional water wells. The reuse of treated wastewater in agriculture in Ouargla is encouraging but requires monitoring and further study to encourage the valorization of treated water in the entire agricultural sector of the basin of Ouargla
Description: Algerian Journal of Arid Environment2015-12-01T00:00:00Z