Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by N.A. Selim
Total Records ( 7 ) for N.A. Selim
  N.A. Selim , S.F. Youssef , A.F. Abdel-Salam and Sh.A. Nada
  This study was conducted to evaluate the efficiency of aqueous extract of ginger root (GAE), aqueous extract of beetroot (BAE) and tomato puree (TP), as natural antioxidant sources, in broiler diets during summer season. Chicks fed on corn-soybean meal basal diets in three phases feeding system. Basal diets were formulated to contain whole strain nutritional requirements including 50 IU of vitamin E/kg. There were two control groups the first fed on basal diet (Con) and supplemented with either 50 IU/kg vitamin E (E-100, to be the second control group), or supplemented with GAE, BAE or TP at levels of 0.5 or 1% from 1 to 40 d of age. The total phenols content (in Gallic acid equivalent) of GAE and BAE were 44 and 31 μg/L, respectively and lycopene content in TP was 155 mg/kg. The environmental temperature and humidity surrounding birds during the experimental period ranged from 35 to 41°C and 30 to 45%. Growth performance, some plasma constituents and viral and bacterial immunity status at 40 d of age were recorded. The results indicated that, among examined natural additives, using BAE improved the overall body weight gain, while adding GAE to broiler diets decreased feed consumption significantly. However the worst feed conversion ratio recorded by TP group, that group recorded the best antioxidant status including plasma total antioxidant capacity and malondialdehyde. Generally, level 1% of supplementation increased the consumed feed and depressed the total bacteria count of intestine at 40 d of age. On the other side, titer of immunity against respiratory viral Diseases (ND and IB), hemoglobin, red and white blood cells increased by adding GAE to diets. Neither antioxidant source, level nor their interactions could change lipids or cholesterol compounds in plasma. The overall results indicated that the best overall broiler performance during summer season was obtained by using GAE at level of 1% as natural antioxidant.
  N.A. Selim , Sh.A. Nada , A.F. Abdel-Salam and S.F. Youssef
  This study was conducted to evaluate the efficiency of aqueous extract of ginger root (GAE), aqueous extract of beetroot (BAE) and tomato puree (TP) as natural antioxidant sources in broiler diets during summer season. Three hundred twenty 1-d-old Arbor Acres broiler chicks (mixed sex) were randomly allocated into 32 wire cages that were then randomly divided into 8 groups (treatments, 4 cages per treatment). Chicks fed on corn-soybean meal basal diet (Con, contained 50 IU of Vit. E/Kg) supplemented with either 50 IU /Kg vitamin E (E-100) or one of the additives (GAE, BAE and TP) at levels of 0.5 or 1.0% from 1 to 40 d of age. The total phenols contents (as Gallic acid equivalent) of GAE and BAE were 44 and 31 μg/L, respectively and lycopene content in TP was 155 mg/Kg. At 40 d of age, 32 birds (4 birds/treatment) were slaughtered and carcass characteristics were recorded. Refrigerated (up to 4 days at 4°C) and frozen (60 days at -20°C) meat samples were examined for total phenols content, antioxidant activity (through two scavenging assays: DPPH and TBARS) and microbiological status. The obtained results showed that neither antioxidant source nor level affected on dressing %, thickness of breast meat, triglycerides and cholesterol compounds of chilled breast meat. On the other side, source of antioxidant have affected strongly on oxidative stability especially after freezing for 60 d. Among examined sources, using BAE was less efficient in reducing oxidation rate than both GAE and TP. The microbiological examination showed strong effect of both tested sources and levels of natural antioxidant additives on decreasing count of total bacteria and Staph. aureas in refrigerated and frozen broiler meat. Using BAE failed to decrease count of Staph. aureas in frozen meat as GAE and TP. According to results of DPPH and TBARS assays and microbiological examination, adding GAE or TP to broiler diets could protect meat safe and healthy even with prolonged storage by freezing to 60d.
  N.A. Selim , N.Z. Boulos , A.M. Abdel-Khalek , M. Shabaan and N.L. Radwan
  Two biological experiments were conducted to determine apparent Metabolizable Energy (AME) of rich unsaturated fatty acids dry-fat (Polyfat® as an example, PF) using corn or corn-soybean meal diets with different inclusion levels of PF in adult cockerel diets. The biological experiments designed to follow procedures of excreta total collection method (TCM). The chemical evaluation of PF included determination of peroxide No., acid No., fatty acid profile and gross energy. Then different mathematical equations were applied to calculate AME of PF based on the chemical evaluation. The determined values of AME of PF using chemical methods were 7160 and 7188 kcal/kg for PF. Among biological experiments, using restricted quantity of corn diet with high levels of PF (25 or 50% of diet) resulted in lower AME values (4724 and 3992kcal/kg PF). While applying ad libitium consumption of corn-soybean practical diet containing 3% soybean oil (as reference oil), 3.8% of PF or 50:50 mixture of both (1.5% SO+1.9% PF), gave more realistic value of 6973 kcal/kg for PF. Mixing PF with soybean oil showed clear synergism effect and added caloric value of 9.6% (737 kcal) to the mixture above the expected value. Applying simple regression procedures on results of chemical and biological evaluations showed highly significant (p<0.001) relationships between AME of PF and either digestible fat, dietary saturated fatty acids (%) or supplemental stearic acid (%) in diet. These relationships have been presented as high confidant prediction equations with r2 values ranged between 0.9355 and 0.9997.
  S. Abou El-Wafa , S.M. Shalash , N.A. Selim , A.M. Abdel-Khalek , A.M. Radwan and A.F. Abdel-Salam
  The contribution of enzyme (xylanase) supplementation (ES) to improving performance of broiler chicks fed decreased ME diets based on corn/ rye was investigated in the current study. Three hundred-sixty-one day old Arbor Acres chicks were randomly allocated in a 2x3x2 factorial design in twelve experimental groups, three replicates per group and ten birds per replicate. Experimental diets were based on two Cereal Sources (CS); corn alone or rye contributing to 10% of the whole diets that differed on dietary ME levels [positive control according to strain recommendations, negative control 1; 50 kcal/kg ME less than recommended and negative control 2; 100 kcal/kg ME less than recommended] at supplemental xylanase doses 0 or 16,000 U/kg diet. Feeding rye to broilers had no negative effect on total Feed Conversion Ratio (FCR) which could compensate for the significant decrease in accumulative live weight gain (BWG) compared to total corn grain feeding. Data on the effect of dietary ME level reveal a significant decrease in total BWG associated with a corresponding increase in total FI and a worsening in FCR as the dietary ME decreased. Inclusion xylanase significantly improved FCR without affecting total BWG and decreasing both abdominal fat content and liver weight. Dressing percentage was not affected by main factors investigated. Interactions studied show no significant effects on growth and most noticeable significant interactions are those for the total FCR between CSxME and CSxES. Treatments have a limited effect on the absence/presence of some pathogenic bacteria. So far it can be include rye in broiler chick diets at the rate of 10% with xylanase supplementation providing that the dietary ME level be kept within the recommendations. While enzyme supplementation is recommended in case of decreasing dietary ME level.
  N.A. Selim , Refaie, Amira M. , Abeer R. Khosht and A.S. Abd El-Hakim
  The aim of this study was to evaluate the interactions between different dietary fatty acids' (FAs) patterns, zinc sources and levels on carcass and meat quality traits of Cobb 500 broiler chicks. Broilers were fed diets contained two different oil sources (soybean oil mainly composed of unsaturated fatty acids, SO; or palm oil mainly composed of saturated fatty acids, PO) and within each studied FAs source, three sources of zinc (zinc sulphate, ZS; zinc methionine, ZM; or nano-zinc oxide, NZO), each at two levels, Recommended (R) equals to 100 mg Zn/kg diet for both ZS and ZM and 40 mg/kg diet for NZO or high (H) equals to 200 mg Zn/kg diet for both ZS and ZM and 80 mg/kg diet for NZO) in a factorial arrangement of 2 x 3 x 2. Results reveal that chicks fed diets contained SO had significantly lower percentage of thigh skin, while, it had higher drip loss and ultimate pH (pHu) of breast and thigh muscles and significantly improved all sensory values of cooked meat compared to those fed diets containing PO. While, those fed dietary PO significantly recorded lower MDA in meat compared to the others fed diets contained SO. Birds fed NZO diets significantly recorded the lowest carcass, breast and thigh skin percentages. Also, it significantly reduced breast drip loss and significantly enriched their meat with zinc by 41.4 and 10.6%, respectively relative to other two zinc sources. Concerning zinc levels, there were no significant differences between the two levels in all parameters studied except in muscles Zn content which was significantly increased by increasing dietary Zn level while, high dietary Zn level significantly reduced total lipids in muscles. It could be concluded that among the examined factors using palm oil, nano zinc oxide at level of 80 mg/kg diet improved carcass traits and meat quality of broiler reared under summer season conditions. While more researches concerning using nano-elements in broiler diets and its safety to human consumption are needed.
  N.A. Selim , N.L. Radwan , S.F. Youssef , T.A. Salah Eldin and S. Abo Elwafa
  This study was conducted to evaluate the efficiency of different selenium (Se) sources and levels in corn-soybean meal broiler diets. For that, 400 day-old unsexed Arbor Acres broiler chicks were allocated to 10 experimental treatments in a 5 (sources) x 2 (levels) factorial arrangement. Five Se sources were tested; (1) sodium selenite (NaSe) as inorganic form; (2) selenomethionine (Se-Yeast) as organic form; (3) Zinc-L-selenomethionine (Zn-Se-Meth) as more recent organic form; (4) powder form of Nano Se form (P-Nano Se) and (5) Liquid form of Nano Se (L-Nano Se). Also two inclusion of Se levels in diets; 0.15 and 0.30 ppm, were examined. The inorganic and organic forms of examined Se were obtained from commercial suppliers while both powder and liquid forms of Nano Se were prepared immediately before starting feeding phases of the experiment. The prepared 80 nm Se nano-particles were synthesized by chemical reduction method and characterized by Transmission Electron Microscope, X-ray diffraction and spectrophotometry. Three phases (1-10, 11-24 and 25-40 d) of feeding were applied and all birds were kept under similar management conditions. Parameters of growth performance, carcass characteristics and concentration of Se in both liver and thigh muscles were investigated. Also assay of Malnodialdhyde (MDA) was carried out in frozen (6 months at -20°C) thigh muscles to investigate the oxidation status of broiler meat. The obtained results showed significant improvement of growth performance and Se concentration in liver and thigh tissues either due to using organic or nano forms of Se, or by increasing the inclusion Se level from 0.15 to 0.30 ppm in broiler diets. While carcass abdominal fat%, giblets% and MDA content in thigh muscles did not affected due to Se sources or levels. Liver showed grater Se concentration than thigh muscles. The overall experimental results showed that using Se-Yeast or Zn-Se-Meth as organic forms of Se, or L-Nano Se as nano form of Se at level of 0.30 ppm in broiler diets or its equivalent in drinking water, respectively, is more effective to get better growth performance and quality of broiler meat. But further studies about the safety of using nano form of selenium as feed additives are needed.
  N.A. Selim , N.L. Radwan , S.F. Youssef , T.A. Salah Eldin and S. Abo Elwafa
  This study was conducted to evaluate both physiological and immunological efficiency and toxicological effects of different selenium (Se) sources and levels in corn-soybean meal broiler diets. For that, 400 day-old unsexed Arbor Acres broiler chicks were allocated to 10 experimental treatments in a 5 sources x 2 levels factorial design. Five Se sources were tested; (1) sodium selenite (NaSe) as inorganic form; (2) selenomethionine (Se-Yeast) as organic form; (3) Zinc-L-selenomethionine (Zn-Se-Meth) as more recent organic form; (4) powder form of Nano Se form (P-Nano Se) and (5) Liquid form of Nano Se (L-Nano Se). Also two inclusion of Se levels in diets; 0.15 and 0.30 ppm, were examined. The inorganic and organic forms of Se were obtained from commercial suppliers while both powder and liquid forms of Nano Se were prepared immediately before starting feeding phases of the experiment. The prepared 80 nm Se nano-particles were synthesized by chemical reduction method and characterized by Transmission Electron Microscope, X-ray diffraction and spectrophotometry. Three phases (1-10, 11-24 and 25-40 d) of feeding were applied and all birds were kept under similar management conditions. Parameters of blood picture, immunity status, antioxidant status, some plasma constituents and T3 hormone were investigated. Also histological examination of liver samples was carried out at 40 days of age. The obtained results showed significant improvement of some hematological parameters, cellular immunity and antioxidant status either due to using organic or nano forms of Se, or by increasing the inclusion Se level from 0.15 to 0.30 ppm in broiler diets. While humeral immunity against Newcastle Disease Virus and Avian flow Virus (H5N1), plasma proteins, activity of liver enzymes and malnodialdhyde (MDA) content in plasma did not affected due to Se sources or levels. Concentration of T3 hormone significantly increased by increasing Se level from 0.15 to 0.30 ppm in the diet. The histological examination of liver showed some severe pathological changes due to increasing Se level from 0.15 to 0.30 ppm for most sources while using 0.15 ppm of Se from inorganic or organic forms of Se showed normal histological structure of liver tissues. The overall experimental results showed although using Zn-Se-Meth as organic form of Se or L-Nano Se as nano form of Se or increasing the supplemental Se to 0.30 ppm in broiler diets or its equivalent in drinking water is more effective to get better, physiological, immunological and antioxidant status of broiler chicks. Inclusion Se-Yeast as organic form of Se in broiler diets at level 0.15 ppm was more save to liver tissues and kidney function. Further studies about the safety of using nano form of selenium as feed additives are needed.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility