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Articles by O.M. El-Husseiny
Total Records ( 6 ) for O.M. El-Husseiny
  O.M. El-Husseiny , M.A. Abo-El-Ella , M.O. Abd-Elsamee and Magda M. Abd-Elfattah
  Two experiments were designed to estimate the effect of methionine levels (0.33 and 0.45%) with betaine and folic acid on broiler performance. A total of 648 unsexed one week old Arbor Acres broiler chicks was randomly divided into two experiments according to dietary methionine level. Each experiment divided into nine treatment groups of 12 birds each with three replicates. The experimental diets were formulated to cover the nutrients requirements for broilers and were supplemented with betaine at 0.5, 0.75 or 1.0 gm kg-1. Folic acid was added at 0.5, 0.75 or 1.0 mg kg-1 for each betaine level. Results can be summarized as follows: Live body weight gain and feed conversion efficiency were significantly increased with increasing folic acid addition and increased with increasing betaine levels up to 0.75 gm kg-1 diet. Productive performance was significantly improved by increasing different levels of betaine and folic acid. The OM, CP, EE, CF and NFE digestion coefficients were significantly (p>0.5) increased with increasing betaine or folic acid levels in the diets. The improvement of chick performance due to added betaine was depressed when chicks received diets containing recommended methionine, whereas, chicks performance improved by increasing folic acid level. Folic acid had significant effect on dressing %, the highest level received the highest dressing % recorded, while no significant effects were noticed in digestion coefficients of nutrients. Blood plasma AST and ALT decreased with increasing dietary methionine level. The highest economic efficiency was listed when diet contained the highest levels of betaine and folic acid.
  O.M. El-Husseiny , M.O. Abd-Elsamee , I.I. Omara and A.M. Fouad
  The experiment was designed to evaluate the effect of supplemented zinc (Zn) and niacin (Nia.) on laying hen performance, egg quality, nutrient digestabilities and relative economical efficiency (EEf) from 28-43 weeks of age. Bovans White Laying hens fed diets supplemented with four different levels of Zn (70,105,140 and 175 mg/kg diet) in combination with four different levels of Nia. (30,150,300,450 mg/kg diet) in a factorial arrangement design. The diets which contained on 70 mg Zn/kg and 30 mg Nia/kg considered as a control. The results indicated that supplemented Zn and Niacin (Nia.) increased the egg production significantly (p ≤ 0.05) compared with the control group. The best feed conversion ratio (FCR) was observed when diet supplemented with Zn and Nia. at 175 and 30 or 175 and 450 mg/kg, respectively. Egg weight (EW) did not improve by supplementing Zn and Nia. Supplemented Zn at 105 mg/kg recorded the best serum total immunoglobulin titres (STIT), While, supplemented Nia. at 300 mg/kg gave the best STIT. Supplemented Zn and Nia. had significant effect on egg shell thickness (EST), blood hemoglobin (BH) and nutrient digestabilities especially improving crude protein digestibility linearly parallel with dietary Zn levels increased. Supplemented Zn at level of 105 mg/kg with 30 mg Nia/kg or 175 mg Zn/kg with 30 or 450 mg Nia/kg gave the highest economical efficiency. Feeding laying hen on diet containing 105 mg Zn and 30 mg Nia/kg resulted in the best performance, egg quality and economical efficiency.
  O.M. El-Husseiny , A.G. Abdallah and K.O. Abdel-Latif
  An experiment was designed to evaluate the effect of some natural feed additives as alternatives of antibiotic growth promoters for broiler chicks. A total number of 1188 unsexed one-day old Ross 308 chicks were used. Two trials were conducted simultaneously using the same control treatments, a negative control (NC) with no feed additive and a positive control (PC) supplemented with Enramycine (0.025%) as antibiotic growth promoter. In the fist trial, natural mineral clay commercial products of Diatomaceous earth1, at 0.2% (DE0. 2%) and 0.5% (DE0. 5%) and Farmagulator2, at 0.125% (Fg. 125%) and, 0.25% (Fg 0.25%) were compared with the control treatments. In the 2nd trial, pre/pro-biotics commercial products of Diamond VXPC3, 0.075% (DV 0.075%) and 0.10% (DV 0.10%); Tomoko4, 0.05% (Tom 0.05%) and 0.1% (Tom 0.1%); and Primalac5, 0.15% (PL 0.15) were compared with the two control treatments. Diets were formulated to meet nutrient requirements of chicks recommended for Ross 308. Results indicated that performance and immune response of the chicks fed diets containing pro/pre-biotic products were higher than those fed diets containing natural mineral clay products. The positive control or the treated group significantly recorded higher body weight than the negative control, with an exception of Diatomaceous earth treatment. Diatomaceous earth treatments (0.2% or 0.5%) significantly recorded the worst performance and the lowest economical efficiency compared to the negative control or the other treatments. From commercial point of view, biological feed additives of pre/pro-biotics or natural mineral clay as alternative of antibiotic growth promoter are beneficial with exception of Diatomaceous earth. Diets supplemented with biological feed additives enhanced the digestibility coefficients of most nutrients better than the controls, however, DE lowered the digestibility coefficients of most nutrients. It is concluded that performance and immune response of chicks fed on biological feed additives were equivalent or even superior to that of antibiotic growth promoter except for Diatomaceous earth. The tested materials were superior to the negative control when added to the diet in the term of performance.
  A.G. Abdallah , O.M. El-Husseiny and K.O. Abdel-Latif
  A trial was set up to evaluate the influence of some dietary organic mineral supplementations on broiler performance. A total of 1,500 day-old Ross 308 broiler chicks was allotted into 10 groups with 3 replicates of 50 birds each. Two control diets (negative control with inorganic minerals and positive control with organic minerals) were formulated to meet nutrient requirements of chicks recommended for Ross 308. The premix was formulated to contain the requirements of trace elements in combination of either inorganic (sulphate form) or organic form (peptide chelate form). Diets were supplemented with the organic form of zinc, copper, manganese or iron (peptide chelate at the rate of 50% or 100% of the total requirements of the elements recommended for Ross broiler chicks). Production performance was measured during the 35 day trial period and mineral excretion was evaluated at 28 day of age. Results indicated that chicks fed diets containing 100% organic minerals (Zn, Cu, Mn and Fe) had significantly higher body weight, better feed conversion, higher % tibia ash and higher immunity compared with those of inorganic control minerals treatment. Also, when organic minerals were fed as a single element while the rest of minerals were inorganic forms at a level of 100% or 50%, the performance parameters were not significantly different from those resulted from all organic minerals together but were significantly better than those of inorganic control treatment. Fecal mineral excretions from broilers receiving the organic mineral diets were lower than those of inorganic control treatment. No significant effects were observed on muscle characteristics among the different treatments. However, organic mineral diets had a positive effect on economic efficiency. It is concluded that replacing inorganic minerals with organic sources improved bird’s performance and enhanced immune response of chicks.
  O.M. El-Husseiny , A.Z.M. Soliman , H.M.R. El-Sherif and A.M. Fouad
  Objective: The study was designed to investigate the impact of selected essential micronutrients, vitamin A, zinc (Zn) and copper (Cu), on productive and reproductive performance of broiler breeders from 53-72 weeks of age. Materials and Methods: Total number of 96 broiler breeders (72 ♀ and 24 ♂) at 53 weeks of age, were randomly assigned to 8 equal groups of 9 hens each, divided into 3 replicate. The experiment was conducted in a 2×2×2 factorial arrangement of the dietary treatments. Eight experimental diets were formulated using two levels of vitamin A (12500 and 25000 IU kg–1), two levels of Zn (132 and 264 mg kg–1) and two levels of Cu (15.7 and 31.4 mg kg–1) in this study. Results: The diet containing 12500 vitamin A IU kg–1+264 Zn mg kg–1+15.7 Cu mg kg–1 resulted in the best productive (egg production, egg mass and feed conversion ratio) and reproductive performance (fertility, hatchability and day-old chick weight). The optimal level of vitamin A, Zn and Cu resulted 12500 vitamin A IU kg–1, 264 Zn mg kg–1 and 15.7 Cu mg kg–1, respectively. Conclusion: Feeding diet containing 12500 vitamin A IU kg–1, 264 Zn mg kg–1 and 15.7 Cu mg kg–1 would produce best productive and reproductive performances of Cairo B-2 broiler breeders.
  O.M. El-Husseiny , A.Z.M. Soliman and H.M.R. Elsherif
  Objective: The experiment was conducted to examine the response of the local broiler female line (Cairo B-2), a new strain of the native Egyptian breed White Baladi chicken females which crossed with Arbor Acres grandparent female line males, to certain dietary nutrients including methionine (Meth), folic acid (FA) and vitamin B12. Methodology: The experiment was designed in a 2×2×2 factorial arrangement from 53-64 weeks of age. Seventy two females and twenty four males were randomly assigned to 8 groups of 9 hens and 3 roosters in 3 replicates each. The birds were housed individually and artificially inseminated with pooled semen every 4 weeks. Results: The results indicated that feeding diet containing 0.25% Meth, 13.0 mg kg–1 FA and 0.15 mg kg–1 B12 showed the best egg weight, egg mass, feed conversion ratio, hatchability and 1 day old chick weight followed by the diet containing 0.25% Meth, 13.0 mg kg–1 FA and 0.03 mg kg–1 vitamin B12. Neither egg quality parameters nor blood parameters were significantly affected by either levels of Meth, FA or B12 or their interactions, except for Haugh units and hemoglobin (p<0.05). The high level of FA improved Haugh units, while the high level of Meth improved hemoglobin. Conclusion: The best productive and reproductive performance were obtained when Cairo B-2 broiler breeders were fed the diet containing 0.25% Meth, 13.0 mg kg–1 FA and either 0.03 or 0.15 mg kg–1 vitamin B12.
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