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 Amani W. Youssef
Total Records ( 2 ) for Amani W. Youssef
  Amani W. Youssef , Eman F. El-Daly , Nafisa A. Abd El-Azeem and M.M. El-Monairy
  The objective of this study was to investigate response of laying hens to added levels of sodium formate under heat stress conditions. A total number of 96 laying hen aged 53 weeks were randomly divided into four treatment groups of three replicates, 8 hens each during summer season. The first group was served as control and fed the basal diet. While, the other three groups were received the basal diet supplemented with sodium formate at levels of 0.1, 0.2 and 0.3% of diet, respectively. The study duration was 8 weeks (from 53 to 61 WOA). Productive performance, egg quality, pH level of some gastrointestinal tract (GI-tract) segments and some blood components and plasma enzymes were measured. Results showed that egg production and feed conversion ratio were significantly improved by adding sodium formate (87.97 and 2.13%, respectively) with adding, 2% sodium formate . While no significant differences in feed intake and egg weight. Adding sodium formate significantly increased shell thickness (44.3 mm), shell % (11.55%), Haugh units (87.00) also Shell weight per unit surface area (SWUSA) was 99.91 with 0.2% sodium formate. The pH values in different GI-tract segments were insignificantly decreased with supplemental all doses of sodium formate. Furthermore, dietary acidification elevated significantly the concentration of plasma calcium (ca) and phosphorus (p) than the control. A significant reduction in plasma level of total lipids and cholesterol was achieved due to dietary acidification. The liver enzymes- Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT) did not significantly changed, in response to addition of acidifiers. The activation of alkaline phosphatase (ALP) was significantly decreased while Lactate Dehydrogenase (LHD) increased with dietary sodium formate supplementation. It is concluded that dietary supplementation with 0.1 or 0.2% sodium formate gave the best result for aged laying hens (53-61 week) in the present study, during the hot summer period (June to Aug.).
  H. M.A. Hassan , Amani W. Youssef , H. M. Ali and M. A. Mohamed
  A growth experiment was conducted to study performance, nutrients digestibility and economic efficiency of broiler chicks fed corn-soybean meal diets supplemented with a commercial phytogenic product (Bedgen 40®) contained artichoke extract (Cynara scolymus), a commercial mixture of organic acids (Galliacid®) and a combination of both. Starter, grower and finisher diets were supplemented with two levels of both being 0 and 150 g t-1 artichoke extract and 0 and 600 g t-1 organic acids in 2x2 factorial arrangement. Dietary treatments were examined on 200 one day-old Cobb broiler chicks. The experiment lasted from 1-39 days of age. The results showed that supplementation of artichoke extract or organic acids mixture significantly (p<0.05) increased body weight gain by about 6% and improved feed conversion ratio by about 7%, compared with the control diet of no feed additives. Addition of artichoke extract improved the digestibility coefficients (p<0.01) of CP and CF, while, addition of organic acids mixture improved the digestibility coefficients (p<0.01) of DM, OM, CP, CF and NFE compared to the un-supplemented diet. Supplementation of artichoke extract and organic acids decreased total feed cost/kg body weight and improved net profit and economic efficiency. It could be concluded that using artichoke extract or organic acids mixture improved broiler performance and economic efficiency of broilers fed corn-soybean meal diets. No associative effect was detected on performance, digestibility or economic efficiency when a combination of both products was used.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility