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Articles by A.S. Sami
Total Records ( 2 ) for A.S. Sami
  A.S. Sami , Amal K. El-Asheeri and M.A. Radwan
  This study aimed at studying the effect of replacing concentrates with corn silage on the carcass and meat quality traits of fattening calves. Twenty four calves of Egyptian Baladi cattle (local breed), 1 year of age and initially weighed 245±2.46 kg were randomly assigned to three equal groups (n = 8 each); Control (C) group that fed Concentrate Feed Mixture (CFM) and rice straw, the second and the third groups were fed CFM and corn silage at ratio of 50:50 (T1) and 25:75 (T2), respectively. After 7 months, five animals per each group were randomly selected for slaughtering. No significant differences among the three groups of carcass merits regarding the proportion of fore and hind quarters, eye muscle area, physical components of best ribs and meat/bone ratio. Also, lean contents of protein, intramuscular fat, moisture and collagen did not significantly differ. Shear force values, cooking loss percentage, expressible fluid percentage, color and pH after 3 and 24 h were not affected by silage replacements. This study indicated that utilizing corn silage instead of concentrate fed mixture either by 50 or 75% in the fattening ration of Baladi calves did not adversely affected the carcass and meat quality merits. These results may allow beef producers to produce meat with the same quality, low costs and consequently low prices compared to the existing traditional beef production systems.
  T.M. Shafey , A.S. Sami and M.A. Abouheif
  The effects of in ovo feeding of L-Glutamine (GLN) at 17th day of incubation on hatchability traits, hatching time and chick weight at hatch (CWT and CWT%, expressed as an absolute value and as a percentage of egg weight, respectively) of Ross meat-type breeder eggs were studied at 26 and 32 weeks of age in trials 1 and 2, respectively. The treatments were a non-injected control, a positive control where saline was injected or saline with GLN at 5, 7.5 and 10 mg/egg. In ovo feeding of GLN did not influence hatchability traits, CWT, CWT% and hatching time. In ovo feeding of 10 mg GLN/egg increased percentage of hatched chicks at 468 h of incubation and reduced percentage of hatched chicks at 492 h of incubation when compared with those of the control treatments. Age of birds did not influence hatchability traits and percentages of hatched chicks at 468 and 492 h of incubation and CWT%. Eggs produced at 26 weeks of age had lower weight, percentage of hatched chicks at 504 h of incubation, hatching time and CWT when compared with those produced at older age. It is concluded that in ovo of up to 10 mg GLN/egg at 17th day of incubation of layer-type breeder eggs did not influence hatchability traits, chick weight at hatch and hatching time and eggs produced at older age had higher egg weight, chick weight at hatch and hatched later than those produced at younger age.
 
 
 
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