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Articles by H. Nassiri Moghaddam
Total Records ( 5 ) for H. Nassiri Moghaddam
  M. Rezaei , H. Nassiri Moghaddam , J. Pour Reza and H. Kermanshahi
  In a 2x3 factorial arrangement, the effects of dietary protein and lysine levels on performance and carcass characteristics of Ross male broiler chickens from 1 to 3 weeks and 4 to 6 weeks of age were tested. Dietary treatments consisted of three levels of L-lysine.HCl in starter and grower period (0.0, 1.5 and 3.0 g/kg) and two levels of protein (208.4, 178.4 in starter and 181.2, 161.2 g/kg in grower period) with 12.12 MJ AME/kg diet. Reducing dietary protein decreased weight gain in starter, grower and total period up to 6.0, 4.6 and 5.6% respectively (P<0.05). It also decreased feed consumption in starter period (P<0.05). Decreasing dietary protein had no significant effect on gain to feed ratio and breast meat yield, but increased abdominal fat percentage significantly (P<0.05). Increasing dietary lysine increased feed consumption in starter and weight gain, feed to gain ratio in grower and total period of the experiment (P<0.05). It also increased breast meat yield and percentage (P<0.05). N excretion reduced significantly by decreasing dietary protein (P<0.05). Dietary treatments had no significant effect on mortality.
  H. Nassiri Moghaddam , H. Janmohammadi and H. Jahanian Najafabadi
  This study was conducted to evaluate the effect of increasing dietary electrolyte balance [DEB; Na + K - Cl, miliequivalents (mEq) Kg-1 on growth performance, tibia ash and Ca, Na, K and Cl contents of blood serum in young pullets. A corn-soybean meal based mash diet containing 187 mEq Kg-1 (Na + K - Cl) was formulated to supply the nutrient requirements of young pullets. DEB of basal diet was increased as much as 43, 64 and 97 mEq Kg-1 by substitution of sodium bicarbonate, potassium bicarbonate or both of them in part of corn and four experimental diets containing 187, 230, 251 and 284 mEq Kg-1 (Na + K - Cl) were obtained. Young pullets (n=160) were used from 7 to 35 d of age, in a completely randomized design with four dietary treatments having four replicate cages (10 pullets) each to evaluate different levels of DEB. Weekly feed intake, body weight gain and feed conversion ratio were not significantly affected by dietary treatments. The same results were obtained in growth period of 7 to 35 days. Tibia ash and its calcium content varied between 46.5 to 48.9 and 34.4 to 37.9 percent, respectively and were not significantly affected by different levels of DEB. Among blood serum electrolytes, only K and Cl were significantly affected by DEB (P< 0.01). Diet containing 251 mEq Kg-1 (Na + K - Cl) had the lowest value of blood serum K concentration and concentration of blood serum Cl increased with increasing of DEB.
  A. Hassanabadi and H. Nassiri Moghaddam
  An experiment was conducted to evaluate the effect of early feed restriction on performance characteristics and serum thyroxin of broiler chickens. The experiment was designed in a 2 x 2 factorial with 5 replicates of floor pens with 12 male or female chicks in each. 240 male and/or female day-old chicks were weighted and randomly allocated to two treatment groups of each sex. Two treatments involved, control group and restricted group, which were fed a mixture of 50:50 rice hulls and commercial starter diet with supplementation of trace minerals and vitamin premixes from 4 to 11 days of age. All groups were fed the same starter, grower and finisher diets from 11 to 56 days of age. Live body weight of restricted birds was compensated on day 42 of age and was numerically more than restricted group at 49 and 56 days of age. Daily feed intake up to 42, 49 and 56 days of age wasn`t affected by treatments. Feed efficiency in the restricted birds was significantly (p< 0.05) better than of control birds up to 56 days of age. Among the body composition, only carcass fat content of restricted birds was significantly (p< 0.05) lower than of control birds. Abdominal fat pad percent of restricted birds at 49 and 56 days of age was significantly (p< 0.05) lower than of control birds. T4 concentration on day 11 in restricted group was significantly (p< 0.05) lower than control group. Its concentration during accelerated growth period was not significantly (p>0.05) more than control group.
  M.R. Akbari , H. Kermanshahi , H. Nassiri Moghaddam , A.R. Heravi Moussavi and J. Tavakkol Afshari
  This experiment was conducted to evaluate the effects of additional supplementation of the diet with vitamin A, vitamin E and zinc, on blood cells, organ weights and humoral immune response of broiler chickens fed a wheat-soybean meal based diet. In a completely randomized design with 2󫎾 factorial arrangement, 224 day-old male broiler chicks were assigned to 32 groups. Factors and their levels were as follows: vitamin A (basal diet, basal diet supplemented with 10,000 IU kg 1 retinol acetate); vitamin E (basal diet, basal diet supplemented with 50 IU kg 1 -tocopherol acetate) and Zinc (basal diet, basal diet supplemented with 60 mg kg 1 Zn using zinc oxide). Sampling for blood and organ weights were done at 21 day of age. Humoral immune response were evaluated by intramuscular injection of Sheep Red Blood Cells (SRBC) at 21 day of age followed by bleeding at 7 and 14 day post injection. Supplementation of the diet with vitamin A, vitamin E, or zinc significantly (p = 0.001) increased the number of White Blood Cells (WBC); but had no effect on Red Blood Cell (RBC) counts, Hematocrit (Ht) and Haemoglobin (Hb). Vitamin A supplementation significantly (p = 0.016) decreased the proportion of monocytes in total number of counted monocytes, lymphocytes and heterophils. Supplementation with zinc significantly decreased (p = 0.003) the ratio of heterophils to lymphocytes. A significant vitamin A vitamin E zinc interaction was found for WBC counts and for the proportions of lymphocytes and heterophils (p = 0.001). Supplementing the diet with either vitamin A or vitamin E had no significant effect on relative weights of liver, bursa and spleen. However, addition of zinc to the diet significantly (p = 0.019) increased relative weight of spleen. Supplementation of the diet with vitamin E or zinc (but not with vitamin A), significantly increased total antibody titres against SRBC. The results suggest that additional supplementation of the diet with vitamin A, vitamin E, or zinc can be effective in general immune responses by affecting blood cell proportions and also indicated that zinc can be considered as an anti-stress nutrient, regarding the heterophil to lymphocyte ratio index. It also, indicates that vitamin E is more important than vitamin A or zinc in persistency of an immune response.
  A. Hesabi nameghi , H. Nassiri Moghaddam , J.Tavakkol afshari and H. Kermanshahi
  In order to study the effect of different levels of dietary vitamin E (0, 50,75,IU kg 1 diets)and L-Ascorbic Acid (0,500 and 1000ppm in drinking water) on performance, immune response and some blood parameters, 432 male commercial broilers were allocated to 9 treatments with 4 replications (12 broilers in each) for 42 days (starter, 0-21day, grower, 2-42 day) in factorial arrangement (33) based on completely randomized design. Immunity was assessed as antibody production to Infectious Bronchitis Virus (IBV), Newcastle Disease Virus (NDV) and Sheep Red Blood Cell (SRBC). Chickens were inoculated (18day) intramuscular with 0.5 mL of 5% SRBC. The injection with SRBC was repeated 12 day later. Performance (0-21day)was not influenced by Vitamin E (VE). Daily weight gain (22-42day) was improved in chicks fed diets with supplemented 75 IUkg 1 VE. Lymphoid organ weights and antibody titer for primary and secondary responses to SRBC were increased by 50 IU kg 1 VE. Humoral immunologic response showed that antibody titer to NDV and IBV were highest (p< 0.05) in groups receiving 75 IU kg 1 diet VE. Adding 1000 ppm Vitamin C (VC) in drinking water significantly increased (p< 0.05) antibody responses to SRBC, daily weight gain (22-42day) and body weight gain in 42day. Secondary responses to SRBC, antibody titer to NDV and IBV were improved (p< 0.05) by supplemented 500 ppm VC in drinking water. Overall, the results of this experiment showed that VE and VC supplemental, improved some of performance parameters and humoral immune response in broiler chicks, respectively. This data suggest that optimum growth and humoral immune response may be achieved at supplemental level of VE of 50 IU kg 1 and VC at 500 ppm.
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