List of Articles Ali Nobakht

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - The effect of starch source with and without enzyme on performance, characteristics of the digestive tract and composition of feces in broilers
  Arman Emami Ali Nobakht
  Background & Aim: Starch is one of the important energy producing components in food rations. The type of starch present in grains is different in terms of digestibility, energy production and adhesion in the intestine. Since in the food rations used by poultry, dif More

  Background & Aim: Starch is one of the important energy producing components in food rations. The type of starch present in grains is different in terms of digestibility, energy production and adhesion in the intestine. Since in the food rations used by poultry, different food sources are used in order to provide the required energy, therefore the energy provided can also be variable. In the present experiment, the effects of using grain seeds, soft wheat and durum wheat as sources of energy supply and its effect on the performance, characteristics of the digestive system and the composition of feces of broiler chickens were evaluated. Materials & Methods: In order to investigate the effects of corn, soft wheat and durum wheat based diets with and without enzymes on performance, carcass traits, digestive system weight, protein and feces moisture of broiler chickens, out of 480 pieces of Ras-308 broiler chickens, in A 2*5 factorial experiment with 10 diets including (maize-based diet, 15 and 30% soft wheat, 15 and 30% durum wheat) and two enzyme levels (zero and 0.05% of diet) in the form of a completely randomized design with 10 Treatments, 4 replicates and 12 chicken were used in each replicate.    Results: The results showed that the type of diet and enzyme had no significant effect on performance (P<0.05). 30% of durum wheat increased breast percentage (P<0.05). Feeding birds with diet containing enzyme increased the percentage of carcasses and decreased the percentage of stone (P<0.05). The use of enzyme in the rations decreased the protein excretion and the lowest amount of stool protein was obtained with the ration containing 30% soft wheat and enzyme. Stool moisture and digestive tract characteristics were not affected by the type of diet and enzyme used (P<0.05).Conclusion: The use of different diets did not have significant effects on performance, but the use of 30% durum wheat and enzyme can have positive effects on carcass traits. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - The Effects of Common and Encapsulated Thyme Essential Oil with Fats on Blood and Immunity Parameters of Broilers with Diets Formulated with Normal and Low Crude Protein Levels
  Mohsen Eyvaz zadeh Ali Nobakht Alireza Safamehr Yousef Mehmannavaz Ali Zanebure
  Introduction & Objective: In the present experiment, the effects of normal and encapsulated thyme essential oil along with saturated and unsaturated fats on blood parameters and safety of broilers with normal and low protein diets were evaluated.Materials and Method More

  Introduction & Objective: In the present experiment, the effects of normal and encapsulated thyme essential oil along with saturated and unsaturated fats on blood parameters and safety of broilers with normal and low protein diets were evaluated.Materials and Methods: In this study, 384 Ross 308 broilers in a 2 × 2 × 2 factorial engagements with 8 treatments including (zero and normal and encapsulated thyme essential oil), (beef tallow and rapeseed oil) and common crude protein and 5% less than the recommended strain in 4 replications and 12 chicks per replication in 42 days and in the three experimental periods included starter (1 to 10 days), growing (11 to 24 days) and finisher (25 to 42 days) for investigation. Blood parameters and immunity of broiler chickens were tested by ELISA method and by spectrophotometer and using commercial biochemistry kits, in a completely randomized design.Results: In relation to the effects of experimental treatments on the biochemical parameters of the blood of chickens, the use of cow tallow, normal thyme essential oil and normal protein level, and rapeseed oil along with thyme essential oil and low protein diets, reduced the LDL level of chickens (P<0.05). The use of encapsulated essential oil of thyme and tallow increased the percentage of blood lymphocytes (P<0.05).Conclusion: The results of this research show that in Ras 308 broiler chickens, the use of unsaturated fat, along with encapsulated thyme essential oil and the level of crude protein recommended for the strain, improves blood parameters in blood LDL level and the immunity of chickens on the percentage of lymphocytes. It seems that the combination of these substances has synergistic effects and can strengthen each other's biological effects. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - The effects of adding essential oils (Thymus vulgaris L. and Mentha pulegium L.) and microbial phytase on intestinal microflora and immune level (humoral immunity (HI) and blood cells) in broilers
  eslam Ghalandari alireza safamehr ali nobakht Yousef Mehmannavaz saman mahdavi
  20.1001.1.17359880.1401.16.1.9.6
  Background & Aims: Although medicinal plants have been used in different ways in feeding poultry, including broiler chickens, the simultaneous use of essential oils and enzymes, especially microbial phytase enzyme, has been used less. Thyme and Mentha are plants tha More

  Background & Aims: Although medicinal plants have been used in different ways in feeding poultry, including broiler chickens, the simultaneous use of essential oils and enzymes, especially microbial phytase enzyme, has been used less. Thyme and Mentha are plants that affect the immune system. The positive effects of phytase have been documented in poultry. The purpose of this research is to investigate the mutual effects of essential oils and phytase enzyme on intestinal microflora and immunity level of broiler chickens.Materials and Methods: This experiment examines intestinal microflora and immune level (humoral immunity (HI test) and blood cells) using three levels of thyme essential oil, Mentha essential oil and microbial phytase with 8 treatments and 4 repetitions and a total of 32 test units for 42 days. It was done on broilers. Culture methods (MRS-Agar and EMB) and ELISA method and commercial biochemistry kits were used to check intestinal microflora and immune level, respectively.Results: Examining the main effects showed that the treatments that consumed thyme essential oil had lower coliform population and total aerobic bacteria (TAB) compared to other treatments (p<0.05). The level of humoral immunity showed a significant difference among different experimental groups (p<0.05). The treatments that did not receive essential oils of thyme and Mentha had the lowest ratio of heterophils to lymphocytes (p<0.05).Conclusion: The results showed that the use of microbial phytase enzyme and thyme essential oil reduces the population of intestinal coliform bacteria and the use of thyme essential oil improves humoral immunity. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Evaluation of the effect of colostrum in diet on intestinal microbial flora of Japanese quail
  Saman Mahdavi Ali Nobakht Reza Mokhtarian asl
  Introduction & Aim: Addition of natural nutritional compounds including colostrum in the diet can be useful for quail. The aim of this study was evaluation of the effect of colostrum in diet on intestinal microbial flora of Japanese quail. Materials and Methods: 12 More

  Introduction & Aim: Addition of natural nutritional compounds including colostrum in the diet can be useful for quail. The aim of this study was evaluation of the effect of colostrum in diet on intestinal microbial flora of Japanese quail. Materials and Methods: 120 Japanese quails were tested in a completely randomized design using a diet without colostrum, a diet with 2% cow's colostrum and 4% cow's colostrum in 3 treatments and 4 replications and 10 Japanese quails in each replication. After a period of 42 days, two quails were selected from each replicate. Then, a piece of the ileum of each bird was examined to count the population of lactobacillus and coliform. Results: Quails fed with 4% colostrum had the highest total counts of lactobacillus (p< 0.05) and lowest total counts of coliform bacteria among the experimental groups (p>0.05).  Also, the treatment group fed with 2% colostrum also showed an overall increase and decrease in the population of lactobacilli and coliform bacteria compared to the control group (p>0.05).         Conclusion: The use of pasteurized cow colostrum in amounts of 2% and 4% in the diet of Japanese quail increases the total count of lactobacilli and reduces the total population of coliform bacteria, which can be used as a new nutrient to improve the intestinal microbial flora in the diet of farmed poultry.  Manuscript profile