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AbuHafsa S.H.,Arid Lands Cultivation Research Institute | Hassan A.A.,Egyptian Animal Production Research Institute | Salem A.Z.M.,National Autonomous University of Mexico | Salem A.Z.M.,Alexandria University
Tropical Animal Health and Production

Forty-eight growing New Zealand White male rabbits aged 6 weeks (874 ± 1.3 g initial body weight (BW)) were used to study effects of partial replacement of berseem hay (BH) with Salix tetrasperma hay (ST) on growth and physiological responses. Rabbits were allotted to one of four diets of 12 rabbits each for 75 days in a completely randomized design. The treatments were as follows: control (30 % BH), ST25 (7.5 % ST + 22.5 % BH), ST50 (15 % ST + 15 % BH), ST75 (22.5 % ST + 7.5 % BH). Nutrient digestibility coefficients, nutritive value and N utilization of rabbits fed with the ST50 rations were higher (P < 0.05) than the other groups. Final live BW, average daily gain, feed intake and feed efficiency of rabbits fed ST25 and ST50 were higher (P < 0.05) than those fed ST75 and the control. Serum biochemical metabolites of urea, creatinine, aspartate amino transferase and alanine amino transferase concentrations varied among diets, with the rank order (P < 0.05) ST75 > ST25 and ST50 > control. Glucose level was higher (P < 0.05) for the control than the other diets. Rabbits fed with the mixed diets of ST had lower (P < 0.05) total lipids, cholesterol and triglycerides levels than those fed with control. Haematological indices of packed cell volume, haemoglobin, red blood cells, white blood cells and lymphocyte counts were lower (P < 0.05), but monocyte was higher, in rabbits fed with the ST75 than the other groups. However, other haematological parameters were similar among diets. Since all the performance and blood parameters were within normal ranges for healthy rabbits, and there were no signs of toxicity, we conclude that partial replacement of BH by ST improves rabbit growth performance, and did not impact rabbit health. © 2014, Springer Science+Business Media Dordrecht. Source

Abu Hafsa S.H.,Arid Lands Cultivation Research Institute | Basyony M.M.,Egyptian Animal Production Research Institute | Hassan A.A.,Egyptian Animal Production Research Institute
Asian Journal of Poultry Science

A study was conducted to investigate the effects of Guar Korma Meal (GKM) as a partial replacement for soybean meal (SBM) in broilers diets on growth performance, carcass traits, blood metabolites and economic efficiency. Three hundred; one-day-old Cobb-400 broilers, each with five replicates (n = 15 chicks per replicate), were submitted to one of the four diets contain 0, 25, 50, 75% SBM were replaced with GKM in starter and grower diets, respectively for 42 days in a completely randomized design. Body Weight (BW), Body Weight Gain (BWG) and Feed Intake (FI) were lower (p<0.05) in broilers fed (GKM-50) and (GKM-75) than those fed (GKM-25) and (GKM0), whereas Feed Conversion Ratio (FCR) was better (p<0.05) when broilers fed on (GKM-25). Performance Index (PI) and Performance Index Score (PIS) were superior in the (GKM-25) followed by SBM fed groups when compared to the other groups. Digestibility coefficients of OM, CP, CF and NFE were higher (p<0.05) for broilers fed on (GKM-25) than those fed other diets, however, EE was highest for broilers fed on (GKM-50) and (GKM-75). Carcass traits, cut up parts and yields significantly increased (p<0.05) for chicks fed (GKM0) and (GKM-25), while group fed on (GKM0) recorded the lowest abdominal fat (%) followed by (GKM-25) group. Ascending levels of GKM treatments influenced the carcass meat, which was observed as decrease in CP contents (p<0.05) but increase in moisture, EE and ash contents (p<0.05) in breast and thigh meat compared to (GKM0) group. Broilers fed on (GKM-75) had the highest urea, triglycerides, cholesterol, HDL, LDL and vLDL concentrations than the other treatments. The best value of Economic Efficiency (EE) was recorded by group fed on (GKM-25). High levels of GKM in broilers diets deleteriously affect growth performance, FI, FCR and blood lipids. It was concluded that optimal level of GKM is low level 25% without adverse effects on growth performance, carcass traits, blood lipids or economic efficiency of broilers. © 2015 Academic Journals Inc. Source

Rashad M.,Arid Lands Cultivation Research Institute | Elnaggar E.,National Research Center of Egypt | Assaad F.F.,National Research Center of Egypt
Environmental Earth Sciences

Readily dispersible clay is the part of the clay fraction in soils that potentially disperses in water when a small amount of mechanical energy is applied to soil. Column and batch experiments were conducted to identify the effect of readily dispersible clay on the mobility of some metal ions in a disturbed soil sample. The clay fraction (<0.002 mm) was separated from an alkaline Vertisol from the Nile River Delta. X-ray diffraction technique was used to identify minerals present in the clay fraction. Clay suspensions and deionized H2O solutions of Cd2+, Cu2+, and Zn2+ were prepared and used as influents in soil columns. Adsorption capability of the studied soil among the three metal ions was investigated. The results showed high adsorption capacity of Cd2+, Cu2+, but not Zn2+ for the studied soil. Cu2+ was the highest adsorbed metal by soil and its sorption increased at small equilibrium concentrations compared with Cd2+ and Zn2+. For the three studied metal ions, Langmuir model represented the best fit to the adsorption data. The concentration of Zn2+ and Cd2+ in leachates increased as the leaching solution volume increased, while Cu2+ showed a homogeneous distribution throughout the soil column. According to DTPA extractable metals, Zn2+ was appeared at greater depths than Cd2+, while Cu2+ had homogeneous distribution through the soil column. © 2013 Springer-Verlag Berlin Heidelberg. Source

Rashad M.,Arid Lands Cultivation Research Institute | Selim E.M.,King Abdulaziz University | Selim E.M.,National Research Center of Egypt | Asaad F.F.,National Research Center of Egypt
Advances in Environmental Biology

The removal performance of some environmental pollutants i.e., heavy metal ions (Co2+, Cu2+ and Mn2+) from aqueous solutions was investigated by adsorption process on Linde 4A zeolite (Na from) which obtained from Union Carbide, U.S.A. Zeolite pellets used in this work have 20% binder. The optimal parameters affecting the adsorption process were determined. The adsorption of the studied heavy metals was strongly dependent on pH, temperature and zeolite dose. The optimum pH for the studied metals was found out to be 6.5. The experimental data were well fitted by the pseudo-second-order kinetics model for Cu2+ and Mn2+ ions and the pseudo-first-order kinetics model for Co2+ ion. The equilibrium data were well fitted by the Langmuir model and showed the affinity order: Cu2+ >Mn2+ >Co2+. The sorption rate of metal ions could be significantly improved by increasing pH value. Based on the results obtained integrated with scanning electron microscopy analysis it is observed that the removal mechanism of metal ions was by adsorption and ion exchange processes. The present study showed that the zeolite 4 A was effective in removing some heavy metal ions from aqueous solutions. It showed that the adsorption process of metal ions was mainly dependent on the initial concentrations of the metal ions and the initial pH of each metal ion solution. Source

Morsy A.S.,Arid Lands Cultivation Research Institute | Soltan Y.A.,Alexandria University | Sallam S.M.A.,Alexandria University | Alencar S.M.,University of Sao Paulo | Abdalla A.L.,University of Sao Paulo
Tropical Animal Health and Production

Twenty Santa Inês ewes used to evaluate effects of oral administration of Brazilian red propolis extract on blood metabolites, milk production, and lamb performance were randomly grouped (n = 10 ewes/group) to control without propolis administration and propolis treated (3 g red propolis extract/ewe/day) 21 days before expected lambing date. Blood samples were collected weekly, and daily milk yield was recorded twice weekly until 7 weeks postpartum. Propolis administration increased (P < 0.05) total leukocyte counts, protein, and globulin and glucose concentrations, decreased (P < 0.05) somatic cell counts, and enhanced (P < 0.05) yields of milk, fat, protein, and lactose. Propolis supplementation increased (P < 0.05) average daily gain and milk conversion ratio but had no effect on lamb birth and weaning weights. The prepartum administration of propolis extract supported positively the transition of ewes from pregnancy to lactation with health benefits achieved for both of ewes and lambs performances. © 2016 Springer Science+Business Media Dordrecht Source

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