http://dspace.univ-setif.dz:8888/jspui/handle/123456789/250 Sat, 30 May 2026 21:49:53 GMT 2026-05-30T21:49:53Z http://dspace.univ-setif.dz:8888/jspui/handle/123456789/433 Titre: Situation sanitaire mammaire et facteurs de risque des mammites en élevage bovin hors sol en Tunisie Auteur(s): M’SADAK, Y.; MIGHRI, L.; KRAIEM, K. Résumé: The objective of this work is to assess the health status of breast cows from the Individual Cell Count (CCI) and the Cellular Rate of Herd (TCT) and determine the probable risk factors for mastitis. The study was performed on a sample of 40 non-grazing cattle in the region of Monastir (Tunisia). The breast health result has been achieved by direct cell counting methods on cow's milk and the herd’s mixed milk. Some mastitis’ risk factors were persuaded from a survey, an hygienic and technical monitoring of milking site and a control of milking machines about hygienic, technical and technological plans. It appears that respectively 66 and 52% of cows have arithmetic (MA) and geometric average (MG) of CCI > 200000 cell. / ml. About herds, 85 and 75 % of farms have respectively MA and MG of TCT > 200000 cell. / ml. The study of individual parameters in relation with the CCI showed that only the cows’ cleanliness had an effect on the CCI, while the study of milking conditions correlated with cell counts, detected the impact of some milking practices and some technological characteristics on the CCI and TCT. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.univ-setif.dz:8888/jspui/handle/123456789/433 2014-01-01T00:00:00Z http://dspace.univ-setif.dz:8888/jspui/handle/123456789/431 Titre: Production et croissance des plants d’Acacia sur des substrats à base de tamisat de compost dans une pépinière hors sol (Tunisie) Auteur(s): M’SADAK, Y.; HAMDI, W.; ZAALANI, Ch. Résumé: This study proposes an attempt to optimize the forestry compost produced at the nursery forest aboveground Chott Mariem -Sousse in Tunisia, by varying the particles size using different techniques and different riddling methods, to develop a substrate based on forestry sieved product suitable for breeding in containers of hardwood plants of Acacia cyanophylla. Tamisats which have acceptable porosity and the current substrate not sieved (100 % crude forestry compost derived from Acacia homogenate) underwent an indirect morphological characterization based on assessments of germination and growth (height, diameter and robustness ratio) of produced plants. Regarding seed germination, the test results conducted in the laboratory have shown the good quality of seeds used. Similarly, the % germination is almost the same on all substrates tested, that’s why the riddling didn’t reveal significant effect. According to the results of the average evolution of the height and diameter of seedlings, it appears difficult to distinguish the effect of substrate on their behavior during the first month after seedbed. The other two followed observations of growth, made five and seven weeks after planting showed similar growth on crude compost and tamisats from the simple sifting respectively 6, 8 and 12 mm, however, we can note a small difference in favor of coarse tamisats from double riddling of refusal, respectively of the mesh 6 mm on the mesh 8 mm and of the mesh 8 mm to the mesh 12 mm. The measured values of robustness ratio are in favor of the tamisat stem from the double riddling of refusal of the mesh 6 mm on the mesh 8 mm, however, this judgment remains to be confirmed as the vegetative development stage considered was not advanced. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.univ-setif.dz:8888/jspui/handle/123456789/431 2014-01-01T00:00:00Z http://dspace.univ-setif.dz:8888/jspui/handle/123456789/429 Titre: Path coefficient analysis of body weight and biometric traits in Ouled-Djellal breed Auteur(s): Dekhili, M.; Aggoun, A. Résumé: Direct and indirect effects of twelve variables ( neck length (nl), body length (bl), trunk length (trl), pelvis length (pl), hip width (hw), chest size (cs), chest depth (cd), chest width (cw), height at withers (htw), height at sacrum (hs), height at back (hb), side depth (sd) on body weight of 347 Ouled-Djellal ewes were investigated using path analysis. Seven traits were found not to be important; they were deleted from the full model. So, we ended up with a reduced model, with five traits only ( bl, cs, cw, htw, sd). Pairewise correlations between body weight and zoometrical traits ranged from 0.07-0.72. The direct effects of chest size and body length on body weight prediction were the strongest (0.50 and 0.44, respectively). Chest width, side depth was positive and significant, as well. But height at withers was significant but with negative effect. The optimum multiple regression equation included chest size, body length, chest width, height at withers and side depth, with a determination coefficient (R²) of 0.87 and determination coefficient of error of 0.13 These results obtained in this investigation could help in weight estimation, selection and breeding programmes. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.univ-setif.dz:8888/jspui/handle/123456789/429 2014-01-01T00:00:00Z http://dspace.univ-setif.dz:8888/jspui/handle/123456789/427 Titre: Irrigated farm management in semi-arid area East Algeria Auteur(s): BENNIOU, R.; Van Damme, P. Résumé: The research presented in this paper focuses on the influence of irrigation water use on crop diversity of the production system in semi-arid area of Algeria. We hypothesis’ that farmers’ practices irrigation are explained by logics that need to be understood at farm level. The study was accent in farms’ diversity stratification on regional cart: the upper zone (UZ), the central zone (CZ) and the lower zone (LZ), was carried out via quantitative data collection in 120 randomly chosen units. In a second phase, 16 representative farms and 242 crop parcels, including 174 cereal crop fields, were subjected to a technico-economic follow-up during two consecutive years (CY1, CY2). We recorded periods and cropping methods on all parcels and investigated farmers’ rationale wedding these practices. Resource diversification and production cycles are based on availability and use of irrigation water and combine cereal and livestock production with other speculations such as: feed crops, vegetables and potatoes. This diversification is more or less pronounced according to farm type and area. It is stronger in the central and lower semi-arid area mainly occurring on medium-sired and small farms. Irrigation has a big role in explaining of crop diversity in semi-arid area. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.univ-setif.dz:8888/jspui/handle/123456789/427 2014-01-01T00:00:00Z