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Articles by K. Abbas
Total Records ( 3 ) for K. Abbas
  T. Madani , F. Chouia and K. Abbas
  The objective of this study was to determine the effects of progestagen treatment administrated alone or coupled to an injection of eCG to synchronize oestrus on sheep reproductive traits during the anoestrus season under extensive management conditions of Algeria. Two flocks differing by level of body condition score were used. Fertility rates of treated groups, when compared to control groups, were higher for ewes matted at lean body condition (0.45-0.47 versus 0.10), whereas ewes matted at moderate body condition recorded higher performance during first estrus (0.37-0.45 versus 0.10) and comparable fertility rate for all mating period. Higher prolificacy rates were performed in synchronized groups of poor body condition (1.38 versus 1.00) when compared to control group. For moderate body condition flock, if progesterone and eCG treated ewes performed higher level of litter size than do control ewes (1.54 versus 1.20) for first estrus, prolificacy rate was similar between all groups for all mating period. Extra lambs weaned were significant for lean body condition synchronized groups (0.45) and for moderate body condition progestagen-gonadotropin treated group (0.33). Results indicated that it is possible to increase extra lambs weaned in anestrous Ouled Djellal ewes after artificially induced oestrus.
  A. Mebarkia , K. Abbas and A. Abdelguerfi
  The experiment was conducted during two cropping seasons (2001/2002 and 2002/2003), with the objective to study the Phenology and agronomic performances of the fifteen ecotypes of the species (Vicia narbonensis L.) under the agro-climatic conditions of the semi-arid region of Setif. The various phenological stages of the plant, the fodder and grains yields and several characters relating to the quality of seeds were measured. The results obtained show large diversity among phenological ecotypes of Vicia narbonensis L. The ecotype 2466 is very early for the beginning of flowering, for full flowering, for the beginning of pods formation and for complete maturity. In contrast, ecotype 2390 is the latest for all the phonological stages measured. Concerning forage and grain production, the statistical analysis showed highly significant differences between ecotypes. The best fodder and grain productions are reported for the late flowering ecotypes. Ecotype 2390 produced average values of 2.5 ton dry matter ha-1 of fodder and 16.9 quintals ha-1 of grains. The fodder and grain yields were correlated positively (p<0.05) with the number of days to the full flowering, which guides the selection towards the late ecotypes. Highly significant differences were observed for total nitrogen and fat contents of seeds (p<0.01). Ecotypes 2393 and 2467 produced the highest concentrations in fat (1.2%) and the ecotype 2462 produced 33.6% in total nitrogen.
  A. Mebarkia , K. Abbas and A. Slimani
  We studied the dry matter yield, grain yield and yield components of ecotype 2388 of Vicia narbonensis L. using three seeding rates and three levels of phosphorus. The experiment was conducted during two crop years 2009/2010 and 2010/2011 in the Agricultural Technology Institute located in the semi arid region of Setif in Algeria. The experimental design adopted was a complete randomized block with three repetitions. Phosphorus levels used are 60, 80 and 120 kg ha-1 and seeding rates are 40, 60 and 80 seeds m2. Analysis of variance indicates that the dry matter yield, grain yield and agronomic traits were significantly affected by the density and phosphorus levels. Using the rate of 120 kg ha-1 of phosphorus results in average yields very important of dry matter of about 45.61 qx ha-1, grain yield of 15.60 qx ha-1 , plants highest of 60.84 cm and a length of pods best of 5.19 cm. Density of 80 m2 grains has spawned better grain yields of 15.48 and 47.62 qx ha-1 of dry matter. However, the number of seeds per pod and weight of 100 seeds were affected differently. The low density of 40 seeds m2 recorded the most important weight of 100 seeds of 16.46 g and a number of seeds per pod high of about 4.94. Significant positive correlations were observed between grain yield and plant height (r = 0.825) and dry matter yield (r = 0.715) and negatively correlated with the number of grains per pod (r = -0.654, p<0.05).
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