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Articles by E.A. Elzubeir
Total Records ( 4 ) for E.A. Elzubeir
  H.E.E. Malik , O.H.A. Ali , H.M. Elhadi and E.A. Elzubeir
  The present study was conducted to characterize the yolk sac utilization in fast and slow-growing chicks, subjected to feed and water deprivation. Two experiments were carried out; using two hundred fifty broiler chicks (Lohmann) in the first experiment and two hundred fifty layer chicks (Bovan) in the second one. Ten recently hatched chicks were immediately selected from each strain at random, individually weighed and then killed. The yolk sac was removed from the abdominal cavity and then weighed. The remaining 240 chicks from both groups were randomly assigned to one of four experimental groups as follows: (A) provided with water but no feed, (B) provided with feed but no water, (C) provided with neither feed nor water and (D) provided with both feed and water. Water and feed deprivation continued for 48 h posthatch. Thereafter, all the groups were provided with normal feed and water. Body weight and yolk sac weight were measured for successive 6 days. Statistical analysis was carried out using general linear model procedure of Statistical analysis system. The obtained data indicated that, there was strain difference between broiler and layer chicks in yolk sac weight at hatch. Nevertheless, with the exception of day 3, the feed and water restriction had no effect on the yolk sac weight and residual yolk utilization. The efficiency of the yolk uptake in broiler chicks was significantly higher compared to layer chicks during the first 2 days posthatch. The finding of this study showed that, broiler and layer chicks, subjected to feed and water deprivation showed striking differences in their efficiency of yolk utilization.
  Hind A.A. Elagib and E.A. Elzubeir
  The present study was conducted to investigate the effect of feeding different levels of energy and methionine on the total antibody, IgG, IgM immunoglobulin titer of broiler chicks. Thirty chicks were reared in an open sided house with temperature range from 29-42°C. The birds were divided into six groups of five replicate with individual bird. Six experimental diets were used with two levels of energy 3050, 2850 kcal/kg and three levels of methionine: control (0%, 0.2% and 0.4%) above the recommended level. At 14 day of age the birds were immunized with 0.2% Sheep Red Blood Cell (SRBC) suspension. The total antibody titer against SRBC was evaluated at 5 and 10 days post immunization using haemagglutination test. 0.1M 2-meracaptoethanol was used to determine IgG, IgM immunoglobulin. The total antibody titer response to SRBC was significantly (p<0.05) increased in birds fed 0.2 and 0.4% methionine supplemented diets. The different levels of energy 3050 kcal/kg and 2850 kcal/kg had no significant (p>0.05) effect on total antibody titer. At 5 and 10 days post immunization IgG increased significantly (p<0.05) with 0.2 and 0.4% methionine above the recommended level. However, no change was observed in the titer of lgM. The different levels of energy had no effect on IgG and IgM titer.
  O.H.A. Ali , E.A. Elzubeir and H.M. Elhadi

This study was conducted to investigate the effect of the environmental temperature on the immune response of exotic broiler chicks reared in arid-hot climate zone (the Sudan). Twenty eight broiler chicks (Lohman) were challenged with 1 mL of 10% sheep red blood cells suspension (10% SRBCs) at day 2 and day 13 during summer (June) and winter (January) seasons. At day 13 and day 20 sera were harvested and subjected to hemagglutination test to measure antibody titers against 10% SRBCs for primary and secondary immune response, respectively. In winter season the antibody titers (GMT) against 10% SRBCs for the secondary immune response was so high compared to that in summer season. Nevertheless, the antibody titers for primary immune response during winter and summer seasons were, somehow, identical although it was a little bit higher during winter season. The weights of the lymphoid organs (spleen, thymus and bursa of Fabricius) were significantly higher in the winter season compared to summer season irrespective of the age.

  Hind A.A. Elagib and E.A. Elzubeir
  This experiment was conducted to study the effect of high environmental temperature on growth performance, mortality of broiler chicken using graded level of methionine at two different levels of energy. Two hundred and forty day old chick Ross were used. Six dietary treatment with 3050 kcal/kg and 2850 kcal/kg and three levels of methionine 0% (NRC, 1994 level), 0.2%, 0.4% above the NRC (1994) level were fed to each group with four replicate ten birds each. The body weight gain, feed consumption, feed conversion ratio, water intake and mortality were evaluated. Birds fed diet with low energy diet (2850 kcal/kg) supplemented with 0.2% methionine above the NRC level (1994) attained significantly (p<0.05) higher body weight gain compared to those fed high energy (3050 kcal/kg) with 0.4% methionine. No significant (p>0.05) effect of the two different levels of energy on body weight gain was found. In low energy diets (2850 kcal/kg) the higher levels of methionine added to the diets resulted in significantly (p<0.05) improved feed conversion ratio as compared to non supplemented groups. In contrast, the birds fed high energy diet had no difference in feed conversion between the different groups. The birds fed low energy diet (2850 kcal/kg) had significantly (p<0.05) higher feed intake than those fed high energy diet (3050 kcal/kg). No statistical significant effect of different levels of methionine on mortality. Water intake increase in birds fed diet with 2850 than those fed 3050 kca/kgME.
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