https://dspace.univ-ouargla.dz/jspui/handle/123456789/3995 Fri, 01 May 2026 10:37:56 GMT 2026-05-01T10:37:56Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/6692 Titre: ÉTUDE DE LA SITUATION SANITAIRE MAMMAIRE ET ESTIMATION DES PERTES LAITIÈRES CHEZ DES ÉLEVAGES BOVINS HORS SOL DANS LA RÉGION DE MAHDIA (TUNISIE) Auteur(s): M’SADAK Y; MIGHRI L; KRAIEM K Résumé: The objective of this work is the evaluation of udder health of cows, in order to assess the level of infection breast and therefore the quantitative estimation of losses in milk linked to high cellular levels. The study is conducted on a sample of 30 farms type aboveground in the region of Mahdia; basin dairy Tunisia, and breast health diagnosis is made by the method of indirect cell count the more used, test milk on CMT neighborhood, and two methods of direct cell counts, namely: Individual cell counts (TCC) on cow's milk and rate Cellular Herd (TCT) on milk mixture. It appears from this study that 37% of functional areas tested are infected with and scores 1 to 4, that 69% of cows have followed the ICC means> 200000 cells. / ml, European threshold beyond which a breast is considered infected and that 87% of farms were monitored using a TST> 200000 cells. / ml with the probability of subclinical mastitis in the herd. The quantitative losses in milk resulting from high cellular rates are estimated mainly from the ICC and TCT, which include an indication: 15% of monitored cows show a loss of 16% of lactation, approximately 825 kg milk / lactation and also 23% of farms are considered losses in milk production total herd of more than 5%. Description: Revue des bioressources Sat, 01 Dec 2012 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/6692 2012-12-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/6693 Titre: ETUDE DU REGIME ALIMENTAIRE DU HIBOU DES MARAIS, Asio flammeus (PONTOPPIDAN, 1763) DANS LA REGION D'EL-GOLEA Auteur(s): DJILALI K; SEKOUR M; BISSATI S Résumé: We studied the diet of the Owl of the marshes in the area of El-Goléa, which located at the center of the southern part of the septentrional Sahara. Its chief town is located at 875 km in the South of Algiers. The analysis of 50 balls of rejection enabled us to recognize 25 species-preys divided into 6 Categories, 13 families, of many preys, the rodents (RA = 72.5 %), proven were consumed, followed by birds (RA= 9.8%); l' species more selected is Gerbillus nanus with a rate equal to 17.6%. Description: Revue des bioressources Sat, 01 Dec 2012 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/6693 2012-12-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/6691 Titre: GESTION ET ÉVALUATION DU STATUT ÉNERGÉTIQUE DU DROMADAIRE Auteur(s): FAYE B; ALSHARARY F.Z; AL RWAILY S.H Résumé: The assessment of the body condition is a useful tool for zootechnicians and stockbreeders to manage the nutritional status of animals subjected to strong seasonal feeding constraints. Several tools are presented to support a convenient management and assessment of the energy status of the dromedary and for which some recent references are available. Four methods are developed in this present paper: (i) the scoring of the body condition starting from a visual grid adaptable according to the phenotypes of dromedary and which makes it possible to appreciate the total body condition; (ii) the estimation of the hump weight, principal fat reserve and rather unique organ in the animal world, which makes it possible to have an idea of the adiposity of the dromedary; (iii) the measurement of the adipocytes’ volume, a convenient analytical approach for research; and finally (iv) the determination of metabolites indicators of the energy level such as the leptin, the hormone of the fattening. Description: Revue des bioressources Sat, 01 Dec 2012 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/6691 2012-12-01T00:00:00Z https://dspace.univ-ouargla.dz/jspui/handle/123456789/6695 Titre: EFFET D'UN STRESS SALIN SUR LA RÉPONSE MINÉRALE D’Atriplex canescens (PURSH) NUTT Auteur(s): KACI S; BISSATI S; DJERROUDI O Résumé: Atriplex plants are an important forage reserves and their importance in the rehabilitation of degraded areas and saline soils (agricultural and ecological interest) its resistance to drought, salinity and sunlight [1,2]. In order to explore the mechanism of salinity tolerance of the plant, proposed by this study to identify the behavior of some cations following a salt stress applied during a week with salt combined NaCl + CaCl2 (400 and 600 meq), was studied in seedlings of Atriplex canescens (Pursh) Nutt. The nutritional aspect has been identified as a probable indication of tolerance to salt stress. The obtained results indicate that salinity has caused some changes in concentrations of cations. Na+ accumulates more in roots than in leaves and stems with increasing salt concentration treatment. The effect of salt treatment is a very highly significant accumulation of sodium in the three organs. The leaves of treated plants are enriched in K+ with increasing salt concentration with a very highly significant accumulation of potassium in the stem and root is not significant compared with controls. Regarding the Ca++ in the leaves, it increases significantly with increasing concentration of salt in the salt treatment, at the stem and root, calcium accumulates with low levels, the treatment effect is not significant. Description: Revue des bioressources Sat, 01 Dec 2012 00:00:00 GMT https://dspace.univ-ouargla.dz/jspui/handle/123456789/6695 2012-12-01T00:00:00Z