Nine surface (0-30 cm) soil samples were collected based on their salinity levels fromEl-Dakhla oasis, New Valley, Egypt to investigate the effect of soil salinity level on phosphorus (P) forms. The soil samples were divided into two levels based on their content of soil salinity to non-saline samples (ECe4dS/m) and saline ones (ECe>4 dS/m). Seven fractions of soil P (resin-P, NaHCO3-Pi, NaHCO3-Po, NaOH-Pi, NaOH-Po, HCl-P and Residual-P) were sequentially extracted from each soil sample using the modified Hedley method. The results indicated that relative to the total P, the mean percentages of resin-P, NaHCO3-Pi, NaOH-Pi, NaOH-Po and residual-P fractions were higher in the saline soil samples (ECe>4 dS/m) than those of the non-saline ones(ECe4dS/m). On the other side, the mean level of HCl-P fraction was lower in the saline soil samples. So, soil salinity tends to motivate levels of labile P (resin-P, NaHCO3-Pi, NaHCO3-Po), NaOH-Po and residual-P to increase on the charge of reducing the HCl-P level. Significant positive correlations were recorded between the NaHCO3-Pi, NaOH-Pi and NaOH-Po fractions and the ECe, Ca+2, Mg+2, Na+, HCO3-,Cl-, SO4-2 and SARe of these soil samples.However,the NaHCO3-Po, HCl-P and residual P fractions were negatively correlated to the ECe, Na+, Cl- and SARe.

NULL

NULL

NULL

Abstract: The effects of feeding Moringa Oleifera leaves meal (MOLM) as a nontraditional feed on performance and immune response were studied in broiler chicks raised on floor litter from 1 till 5 weeks of age. A total of 144 Cobb strain broiler chicks were distributed into 3 treatments (48 chicks/ treatment) with 4 replicates per treatment and 12 chicks per pen. Dietary MOLM levels of 0, 2, and 4% were supplemented to a basal ration (control) containing 22.4% crude protein and 3100 Kcal/kg metabolizable energy so that the three diets were isocaloric and isonitrogenous and met the requirements of broilers for all essential nutrients. Results indicated that at 4 weeks of age, body weight of birds fed the 2% MOLM was numerically higher than those of both the control and 4% MOLM. At 5 weeks of age, however, the body weight of birds offered the 4% dietary MOLM, was lowered (P.05) by 3.6 and 2.4% as compared to the control and 2% MOLM, respectively. The overall means of feed conversion values of all treatments were comparable (1.9). However, at 5 week-old the 4% MOLM recorded lower FCR (2.7) than (P.01) both control and 2% MOLM (2.3 and 2.4, respectively). Protein conversion ratio values indicated that the chicks received 2% MOLM were superior (2.36) to the control 0.0% and 4% MOLM fed groups (2.53 and 2.81%, respectively). Performance index (PI) and production number (PN) showed no differences among all treatments. Lymphoid organs weight as (%) of body weight showed that bursa % in the group received 2% MOLM recorded the highest (P.01) weight in comparison to the control and 4% (.189% vs. .105 and .112%, respectively) in response to dietary supplementation. The percentage of abdominal fat was numerically lower in 2% MOLM fed group and coincided with a decreased (P.01) level of ether extract % in body composition analyses. In conclusion, MOLM could be incorporated at 2% in broiler diets for improving carcass quality, immune response and protein conversion ratio.

NULL

NULL

NULL

NULL

ABSTRACT The present work was conducted to study the effects of late planting on the performance of Egyptian cottons and to obtain information concerning the genetic control of earliness, lint yield/plant, lint% and lint index. Half diallel crosses among seven Egyptian cultivars were evaluated in the F2-generation under early and late planting conditions for two seasons. The reduction% in lint yield/plant caused by late planting was very high and reached 73.92% for the parents and 68.27% for the F2-populations. Both additive and non-additive gene effects were involved in the inheritance of days to first flower, earliness index, lint yield/plant, lint% and lint index, but the non-additive was much larger than the additive gene effects. Epistatic gene effects were found in the earliness traits and lint index in the second season, lint% and lint yield/plant in early planting in the second season. The graphics of Wr/Vr analysis for lint yield indicated that the distribution of the parents around the regression line was not consistent in both of early and late plantings in the two seasons. The genetic parameters indicated unequal distribution of dominance and recessive genes in the parents for all traits. The non-additive effects of genes were reflected in the departure from broad to narrow sense heritability. Therefore, pedigree and recurrent selection methods could be effective in late segregating generations. The promising F2-populations were “Giza 90 x Giza 80”, “Giza 90 x Giza 88”, “Giza 90 x Giza 86” and “Giza 86 x Giza 80”.