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Articles by A. Zamani
Total Records ( 3 ) for A. Zamani
  A. Zamani , H.R. Rahmani and J. Pourreza
  This experiment was conducted to evaluate the effects of supplementing the diet of laying hens with a combination of Zn and Mn on performance traits and broken eggs in a Completely Randomized Design with a 4x4 (16 treatment) factorial arrangement. Three hundred and twenty, 28 weeks old white leghorn laying hens, strain Hy-Line W36 were divided into 64 groups, five hens per group and each four groups were assigned to one of the 16 experimental diets. Sixteen experimental diets contained a corn-soybean basal diet containing 50 mg kg-1 Zn and 30 mg kg-1 Mn supplemented with 0-0, 0-30, 0-60, 0-90, 50-0, 50-30, 50-60, 50-90, 100-0, 100-30, 100-60, 100-90, 150-0, 150-30, 150-60 and 150-90 mg kg-1 of Zn and Mn, respectively. The results indicated that Mn and Zn in combination, Mn alone and age had not any effect on egg output, feed consumption and feed conversion ratio. Mn and Zn alone and in combination had a significant (p<0.05, p<0.05 and p<0.01, respectively) effect on broken eggs. Different levels of Zn had significant (p<0.05) effect on egg production, without any effect on egg output, feed consumption and feed conversion ratio. Age of birds had significant (p<0.05) effect on feed consumption but did not affect egg output, egg production and feed conversion ratio.
  A. Zamani , H.R. Rahmani and J. Pourreza
  An experiment was conducted to evaluate the effects of supplementing the diet of laying hens with a combination of Zn and Mn on eggshell quality. Six hundred and forty white leghorn laying hens, strain Hy-Line W36 were divided into two groups according to age (28 and 44 week old). Each group then was divided into 64 and five birds per group (totally 128 groups). In both groups every four cages were assigned to one of the 16 experimental diets. Sixteen experimental diets included a corn-soybean basal diet containing 50 mg kg-1 Zn and 30 mg kg-1 Mn supplemented with 0-0, 0-30, 0-60, 0-90, 50-0, 50-30, 50-60, 50-90, 100-0, 100-30, 100-60, 100-90, 150-0, 150-30, 150-60 and 150-90 mg kg-1 of Zn and Mn, respectively. Addition of Zn increased eggshell thickness, concentration of Ca in eggshell and eggshell index and decreased concentration of P in eggshell significantly (p<0.05) and did not affect the following measures of eggshell quality: percentage, stiffness, elastic modulus, breaking strength and fracture toughness of eggshell and egg weight. In contrast addition of Mn increased percentage, stiffness, elastic modulus, breaking strength and fracture toughness of eggshell significantly (p<0.05), but did not affect the following measures of eggshell quality: Concentration of P and Ca, index and thickness of eggshell and egg weight. Addition of Zn and Mn in combination increased percentage, index (shell weight per unit surface area), stiffness, elastic modulus, breaking strength, thickness, fracture toughness and concentration of Ca in eggshell and decreased concentration of P in eggshell and did not affect egg weight. In older hens there was a significantly increase in egg weight, breaking strength, elastic modulus, stiffness and fracture toughness of eggshell and significantly (p<0.05) decrease in thickness, percentage and index of eggshell without any effect on concentration of P and Ca in eggshell.
  Y. Aghighi , Modarres Gilani Sh , M. Razavi , A. Zamani and Kh. Daneshjoo
  Juvenile Rheumatoid Arthritis (JRA) is a disease of unknown etiology. A total of 50 patients with JRA who were hospitalized in the Pediatrics Rheumatology Ward of Imam Khomeini Hospital in Tehran during the years 2001-2002, were assessed serologically (IgM and IgG specific viral capsid antigens) for EBV infection and their response to therapy was studied. Minimum age of the patients was at least 6 months and mean age was 60.96 plus/minus 43.46 months. EBV infection was seen in 44 (88%) patients 24 of whom were girls and 20 boys. Ninety two percent of girls and 83% boys were infected with the virus. Ebstein barr virus (EBV) infection was seen in 33 cases, 6 cases, 4 cases and 1 case in the polyarticular, pauciarticular, systemic and spondylitis group, respectively. Fifty four percent of EBV-positive patients with JRA did not respond to the classic therapy. EBV virus is involved in the pathogenesis of JRA and patients with EBV are in greater risk of developing JRA.
 
 
 
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