In total, 50 Rhizobium isolates were isolated from the mature root nodules of common beans plants (Phaseolus vulgaris) grown in different nine governorates of Egypt. PHB was optimized by the identified strain using response surface methodology. A total of 11 parameters (pH, incubation period, inoculum size, temperature, agitation speed, mannitol, sucrose, yeast extract, glycine, K2HPO4, and MgSO4) were analyzed for their significant effects on PHB production by the Plackett–Burman design (PBD). Sucrose, yeast extract, glycine, and MgSO4 were the main significant factors affecting PHB accumulation. Central composite design (CCD) of the response surface methodology was used to determine the optimum levels of the selected factors. Rhizobium phaseoli reached the maximum production (4.997 g/L) at run 36 in the presence of 25 g/L of sucrose, 0.0 g/L of yeast extract, 0.87 g/L of glycine, 0.3 g/L of MgSO4, and 5% of inoculation size. In vitro experiments were carried out to test the effect of different stress conditions (pH: 6–11, temperature: 5°C–50°C, salinity: 0.01%–7%, and drought: 0%–5% w/v) on the growth of Rhizobium phaseoli. The results showed that Rhizobium phaseoli can withstand 3% –5% NaCl, high temperature of 30°C– 45°C, alkalinity at pH value of 8 – 10, and drought stress at 3% – 5% w/v polyethylene glycol with growth loss of 50% when grown on modified medium and 75% when grown on the basal one. In vivo experiments were done to study the effect of drought stress levels on the growth parameters of common bean plants. In general, all the treatments with Rhizobium phaseoli grown on the modified medium were superior to Rhizobium phaseoli grown on the basal medium. Also, they showed high tolerance of drought conditions.

The research was performed at the Department of Animal Production's fish laboratory, National Research Center, Dokki, Egypt. The research was conducted to assess the impact of commercial powder probiotic (ZADO®) on growth efficiency of Nile tilapia mono-sex fish (O. niloticus), which were fed on basal experimental diet (the control group)and other 4 experimental diet, which was the basic diet augmented with 0.25,0.5,0.75 and 1% of ZADO® for T1, T2,T3,T4 andT5, respectively. The Five experimental treatments were performed in three replicates each, the experimental aquaria were part of closed recirculating system, where environmental parameters were kept constant throughout the experimental period. Fifteen aquaria 60 × 40 × 30 cm, width, depth, and height, respectively each was stocked with 15 fish. The mean individual initial body weight (4.04 g/fish) was recorded at the start of the experiment. All fish in each aquarium throughout the entire experimental period were weighed every two weeks. The experimental fish were fed 32 % crude proteinbased diet for (98 days). The daily feed allowances were calculated as 5% of fish body weight and were divided into 3 portions fed at 8 am, 12 pm and 4 pm. The Results of the experiment indicated that T2 had the largest significant (P<0.05) final body weight (FBW g/fish), average weight gain (AWG, g/fish), specific growth rate (SGR % day), feed conversion ratio (FCR), feed efficiency ratio (FER) and protein efficiency ratio (PER) among all the experimental groups. In addition, no substantial variations (p > 0.05) were found in protein productive value (PPV). Although significant effects (p <0.05) have been reported in fish body crud protein (CP) and fat (EE) in T2. By increasing ZADO levels in experimental diets higher than 0)25% no significant effect were observed.

The present investigation was carried out throughout the two successive seasons 2018 and 2019. Mango trees were grown in a private farm located at Wadi Elmullak El-Sharkia Governorate, Egypt. This study aimed to elucidate the impact of pinching early flowering in the winter severity on tree yield and fruit quality of Mango ‘Tommy Atkins’ cultivar. The old of the mango cultivar under this study was 15 years old and planted as 3x4 m apart grafted on ‘Saber’ seedling rootstocks, grown in sandy soil and irrigated through drip irrigation system. Mango trees were subjected to deinflorescence in mid-February by manual removing emerged inflorescence as follows complete removing (removing of 100% of emerging inflorescences), sever removing (75% of emerging inflorescences), moderated removing (50% of emerging inflorescences), light removing (25% of emerging inflorescences) and control (without removing inflorescences). Results showed that complete removing treatment significantly increased fruit yield as compared with other applications or untreated trees in the two studied seasons. Similar trend was observed regarding yield increment (%) where was superior to control treatment in the two seasons. Moderated and light treatments caused enhancement in some fruit physical properties when compared with 100% or 75% removal treatments. Complete removing treatment was superior to other treatments regarding total acidity percentage and vitamin C. In conclusion complete removing (100% of emerging inflorescences) in mid- Feb. could be a practicable choice for continued production for the ‘Tommy Atkins’ under the environmental conditions of exported mango orchards

establishing adequate utilization of genetic variation in developing livestock breeding programs. Cytochrome oxidase subunit I (COI) gene technique was used in the present study to identify and differentiate the main three Egyptian local goat breeds (i.e. Baladi, Zaraibi and Barki) via DNA barcoding to confirm its species identity and provide valuable DNA sequence source in the nucleotide online database for further studies. Blast (Basic Local Alignment Search Tool) results confirmed samples to be Capra hircus (100%) with no variation among the studied breeds. On the other hand, the Fluorescently Amplified Fragment Length Polymorphism (F-AFLP) technique was applied to assess genetic variation among and within the three breeds for litter size character. F-AFLP analysis of triplicates per breed produced 164 polymorphic loci. At the same time fixed and private bands varied among the three breeds; 47, 17 and 14 bands and 9, 19 and 27 bands for Baladi, Zaraibi and Barki, respectively. Analysis of Molecular Variance (AMOVA) showed 3.8% and 96.1% variance among and within breeds, respectively. Population re-allocation showed that all samples of Baladi breed are outliers, Zaraibi breed one outlier and two hybrids and in Barki breed one hybrid, one outlier and one allocates itself. Private bands in excel filter (using virtual inspection in excel) showed fixed bands of 213bp molecular weight at locus 35 in both Baladi and Zaraibi breeds. These bands considered as genetic marker for litter size trait (i.e. high prolific animals).

The main objective of this research is to promote the reuse of wastes resulting from different manufacturing processes such as fruit peels (e.g. banana and orange peels) as substitutes (at least partially) of mineral fertilizers. This might have positive effects in maintaining human health and reducing environmental pollution. Moreover, to compare the use of these wastes with commercial organic fertilizer i.e., compost made by Nile Company to meet the needs of tomato plants from nitrogen (N) and potassium (K) elements. To achieve the goal, two experiments were conducted. The first was an incubation experiment, which was designed to compare the organic fertilizer compost of Nile Company and the powdered banana and orange peels. The second was a field experiment achieved at the Faculty of Agriculture, Ain Shams University. Obtained results of the incubation experiment showed increases in nitrogen content by 16 to 31% and potassium by 12 to 24% due to using grinded banana and orange peels as compared to the compost treatment. Moreover, in the field experiment the concentration of nitrogen (N) and potassium (K) at different plant growth stages whether in soil or plant did not differ significantly between soil plots fertilized with mineral fertilization and those fertilized with banana and orange ones. On contrary, potassium concentration was found higher in the soil fertilized with organic fertilization than that fertilized with mineral fertilization. It has also been found to us that there are no clear significant differences between tomato fruits resulting from mineral fertilization of the ground and those that were fertilized by the mixture of banana and orange peels in terms of the ratio of nitrogen and potassium, weight, size and density of the fruit and other characteristics except for the total salts percentage, which was less Fruits fertilized with a mixture of banana and orange peels

A cross sectional study was conducted to evaluate obesity of housewives. The Sample that comprised of 200 females was selected from different regions of great Cairo, Egypt. Age was affected the BMI of various investigated obesity classes with a high correlation. A similar finding was also detected in case of education status where such parameter was also greatly affected the BMI status. The occupation, marital status and family size did not show any significant effect in BMI. The Income parameter didn't show any significant with the BMI. So, it could be concluded that only age and education status are greatly affected the housewives obesity in the investigated sample. Life style, i.e the sports practice. The type of sport, the time spent for sport practice, the place sports practice, household works making by herself, the number of times household works practice/week, the time of sleep in day and the time of last meal before sleeping were statistically significant with the BMI. Anthropometric measurements (waist circumference, waist-to-height ratio and central obesity) are greatly affecting the BMI meaning that there is a significant difference among various investigated obesity classes owing to such anthropometric factors. Regarding to the height parameter, no significant difference was found between overweight as well as obesity class I each other, and similar finding was also found between obesity class 11as well as obesity class III. The second variable (i.e., IBW%) had no significant effect among the three obesity classes (I, II and III), while the overweight group was significantly differed rather than that of others. Considering the Central obesity variable, statistical analyses proved that no significance was detected with overweight or obesity class II. group. Similar trend was also, noticed in case of (hip circumference) in relative to obesity class I and obesity class II.

Total number of forty testes from twenty Sudani camels (Camelus dromedarius) were used in the present study (>5-10 years old and 500-600 kg body weight). The experimental work was executed to define the effect of green laser irradiation with short-wavelength 532 nm and continuous wave from a diode laser light with a total output power of 3 mW on epididymal camel spermatozoa quality at different exposure times of 0 (control, non-irradiated), 2, 4, 6, 8, and 10 min. Following irradiation, the percentages of motile spermatozoa, storagability, viability, and acrosomal damage were assessed of the epididymal camel spermatozoa stored at 5°C for 4 days. Epididymal spermatozoa was diluted with lactose-yolk-citrate (LYC) extender. The obtained results showed that the highest (P<0.05) value of the percentages of motile and storagability of spermatozoa was recorded with spermatozoa exposed to 6 min of laser irradiation and the lowest (P<0.05) value was recorded with the control group. Otherwise, the highest (P<0.05) value of the percentages of dead and acrosomal damage of spermatozoa was recorded with spermatozoa exposed to 10 min and the lowest (P<0.05) value was recorded with 2 min. The advancement of storage time at 5°C decreased (P<0.05) the percentages of motile and storagability of spermatozoa, while increased (P<0.05) the percentages of dead and acrosomal damage of spermatozoa during storage at 5°C for 4 days. Consequently, enhancing the artificial insemination program can be achieved using the laser irradiation which is considered a cost-effective technique for improving semen quality. The profitable effects of laser irradiation on epididymal camel spermatozoa quality raised the motile spermatozoa, storagability, livability, acrosomal integrity which consider an indicator to improve mitochondrial function which extends the survival of spermatozoa

Potato occupies a distinguished position in the Egyptian agricultural economy, whether in terms of its contribution to agricultural income or in terms of cultivated area, in addition to being one of the important food crops in the Egyptian dietary pattern in addition to being one of the most important Egyptian agricultural exports. The research aims to measure the effect of price policies on the most important economic variables of the potato crop by identifying both the productive and economic indicators of the potato crop in Egypt. The extent of deviation of the price that producers get from the real price that they must obtain. The efficiency of using agricultural resources for the potato crop. The effect of the price policy of potato crop on the product's well-being and consumer and government revenues. It was found from the results of the research that the average area cultivated with the potato crop amounted to about 317.74 thousand feddans. The feddan productivity the total production amounted to about 10.82 tons, 3477.12 thousand tons, respectively, and that the average total costs. Total income, net revenue per feddan, and farm price reached about 9554 53, 13704.05, 4149.58, and 1147.68 pounds respectively, and the ratio of total revenue to total costs. The profitability of the produced ton, and the profit of the invested pound amounted to about 1.53, 0.53 and 381.87 pounds, respectively, during the period (2000-2018), as it turned out that. The value of production inputs, the added value amounted to about 8097.89, 5606.16 pounds, and the average consumption. The amount of waste, and the surplus of the potato crop in Egypt amounted to about 2,297.89, 425.32 and 1179.22 thousand tons, respectively, and the rate of self-sufficiency of the potato crop in Egypt reached About 152.99%, the average per capita consumption of the potato crop in Egypt was about 28.51 kg / year, and the average quantity and value of exports and imports of potatoes amounted to about 418.02, 106.44 thousand tons, 145.63 and 76.47 million dollars per ton respectively, and the trade balance of potatoes reached about 7469 million Dollars during the period Previous reference to it. The nominal protection coefficient and rate and the partial equilibrium model were also estimated in order to study the effect of price policies on both the producer. The consumer, foreign trade and government revenue as a result of following a certain policy based on the indicators of welfare, efficiency and government revenue. About 0.62, 0.38, respectively, during the period (2000- 2018), as it was found that the average net economic loss. The net economic impact on society and the state, producer surplus, government revenue, and the change in foreign exchange amounted to about 247.176, 426.96, 904.352, 1309.882, 829.035 thousand pounds, respectively, during the period (2000-2018).

The aim of this research is to trace recent changes in family expenditures on food commodities between 2015 and 2017/18. The data is drawn from CAPMAS publications on family income, expenditure, and consumption for both years. Three food groups are explored in this paper: 1- The aggregate group of food and beverages; 2-The grains and bread group; and 3- The meat group. Two statistical models are utilized for the purposes of data analysis. The first model is known as Working's model and the second model is the well-Known double logarithmic model. The analysis shows that the expenditure elasticity of the aggregate group of food and beverages ranges between 0.423 for high-income urban families in 2017/18 to 0.763 for urban poor families in 2015. For rural families the same elasticity is about 0.313 for high-income families in 2017/18 and about 0.751 for poor families in 2015. These estimates are derived from the OLS estimates of Working's model. The double logarithmic model gives one single estimate for expenditure elasticity for the entire set of data. For example, the expenditure elasticity for all families in 2017/18 is 0.63 in urban areas and 0.59 in rural areas according to the double logarithmic model. The same estimates are 0.64 for urban areas and 0.56 for rural areas according to Working's model. The Working's model fits the family survey data quite well and gives multiple estimates of expenditure elasticity according to the level of family income. In contrast, the double logarithmic model gives one estimate of expenditure elasticity that does not change with the level of family income. That is Working's model would be more suitable for policy analysis purposes.

This study aims to use one thermochemical storage materials system as a heat source for poultry egg incubation. Three types of activated thermochemical storage materials (TCMs) were used as an energy storage medium. These materials are Silica gel self-indicating (blue/pink), commercial white Silica gel, and Natural Zeolite. An open thermochemical system was applied inside a poultry egg incubator. The TCMs were humidified by the vapor produced from the evaporation of the water by an ultra-sonic humidifier at atmospheric pressure. The thermal recovery process aims to release the stored energy in TCMs. Two types of poultry egg incubator used during this study. The first one was the traditional poultry incubator (electricity incubator). The traditional egg incubator dimensions were 57×66×59 cm with capacity of 125 hen egg- 76 hatching. The second one was the prototype of a thermochemical poultry egg incubator. The thermochemical poultry egg incubator contained sensors to control and measure the temperature and humidity inside the incubator. The designed incubator egg dimensions were 56x39x28.5 cm, with a capacity of 25 eggs. The total heat losses by the wall and ventilation were 9.8 and 1.5W, respectively. The heat production by 25 eggs due to metabolic activities was 3.65 W. The total energy needed for the incubation process was 36.09W. The container of storage material with dimensions of 35x35x5 cm with 3.5 kg capacity allocated inside the incubator. The container's surface is covered with aluminum sheet with 0.5 mm thickness supplied with fins. The egg tray is placed on the aluminum sheet, and the eggs were placed horizontally in the tray. The energy consumption for traditional and thermochemical incubators for 21 days was 19.25 kWh and 11.2 kWh, respectively. The energy saving by thermochemical prototype incubator was 41.8%. The percentage of hatchability for traditional and prototype incubator was 80.9% and 71.4%, respectively.