• OpenAccess
    • List of Articles Ali Nobakht

      • Open Access Article

        1 - The effects of different levels of mineral and vitamin premixes on performance and blood metabolites of laying hens on corn base diets
        علی نوبخت
        An experiment was conducted to evaluate the effects of different levels of mineral and vitamin premixes on performance, egg traits and blood parameters of laying hens in late laying period on corn – soybean base diets. Experiment was carried out in a completely ra More
        An experiment was conducted to evaluate the effects of different levels of mineral and vitamin premixes on performance, egg traits and blood parameters of laying hens in late laying period on corn – soybean base diets. Experiment was carried out in a completely randomized design with 240 Hi-Line (W36) laying hens from 65-76 weeks of age with 5 treatments, 3 replicates and 12 hens in each replicate. The levels of mineral and vitamin premixes in experiment diets were 0, 0.25 (factory recommended level), 0.35%, 0.45% and 0.55% and fed to laying hens for 12 weeks. The results showed that using different levels of mineral and vitamin premixes significantly affect the performance and egg traits of laying hens (P0.05). The overall results indicated that in laying hens in late laying period on corn base diets, 0.45% of mineral and vitamin premixes can improve their performance and decrease the feed price for production each kilogram of egg. Manuscript profile
      • Open Access Article

        2 - The effects of urea and diet energy level on performance, egg quality traits and blood parameters of laying hens
        علی نوبخت
        This study was conducted to evaluate the effects of different levels of urea and energy in diets on performance, egg quality traits and blood parameters of laying hens. This experiment was conducted with two hundred and eighty eight Hy Line- W36 laying hens from 35 to 4 More
        This study was conducted to evaluate the effects of different levels of urea and energy in diets on performance, egg quality traits and blood parameters of laying hens. This experiment was conducted with two hundred and eighty eight Hy Line- W36 laying hens from 35 to 46 weeks of age as 3*2 factors with 3 levels of urea (0, 0.25%, and 0.5%) and 2 levels of metabolizable energy (ME) (2800 and 2900 kcal/kg) in 6 treatments, 4 replicates and 12 hens in each replicate in a completely randomized design. In diet with 2900 kcal/kg ME egg production percentage, egg mass, feed conversion ratio, eggshell weight, albumin weight and Haugh unit in contrary with diet contained 2800 kcal/kg ME improved. Laying hens had the best performance, egg quality traits and the lowest feed price/per kilogram of egg with diet contained 0.25% urea. Using different levels of ME and urea in diets did not have any significant effects on blood parameters of laying hens, however in interaction effects of ME and urea in diets, the lowest level of cholesterol was observed in diet contained 2900 kcal/kg ME without urea using and the lowest amount of blood albumin obtained in diet contained 2900 kcal/kg ME and 0.25% urea. The overall results indicated that in laying hens from 35 to 46 weeks of age, using diet with 2900 kcal/kg metabolizable energy and 0.25% urea improve the performance and egg quality traits and reduce the production price. Manuscript profile
      • Open Access Article

        3 - The Effects using Canola Meal by Using two Levels of Vegetable Oil on Performance, Egg traits and Blood Biochemical Parameters of Laying Hens in Late Laying Period
        ali nobakht mohammad valizadeghan
        This experiment was conducted to evaluate the effects of using canola meal and two levels of vegetable oil on performance, egg traits and blood biochemical parameters of laying hens in late laying period. In this experiment 216 of Hi line (W36) laying hens from 62 to 74 More
        This experiment was conducted to evaluate the effects of using canola meal and two levels of vegetable oil on performance, egg traits and blood biochemical parameters of laying hens in late laying period. In this experiment 216 of Hi line (W36) laying hens from 62 to 74 weeks of age were used in a (3 × 2) factorial pattern with 3 level of canola meal (10.12%, 15.18% and 20.24%) and 2 level of vegetable oil (2% and 4%). This experiment was conducted in a completely randomized design with 6 groups and 3 replicates (with 12 hens in each replicate). The experimental groups included: 1) diet with 6.93% of soybean meal, 10.12% of canola meal and 2% of vegetable oil, 2) diet with 8.58% of soybean meal, 10.12% of canola meal and 4% of vegetable oil, 3) diet with 3.19% of soybean 15.18% of canola and 2% of vegetable oil, 4) diet with 3.19% of soybean meal, 15.18% of canola meal and 4% of vegetable oil, 5) diet without soybean meal, 20.24% of canola meal and 2% of vegetable oil, 6) diet without soybean meal, 20.24% of canola meal and 4% of vegetable oil. The results showed that the replacement of soybean meal by canola meal except of egg weight did not have any significantly effects on performance, egg traits and blood biochemical parameters of laying hens (P>0.05). The highest egg weight (63.62g) was observed by using 15.18% of canola meal. Manuscript profile
      • Open Access Article

        4 - The effects of different levels of dried pomegranate pulp on performance and blood metabolites of aged laying hens
        علی نوبخت mohammad valizadeghan
        This experiment was conducted to evaluate the effects of different levels of dried pomegranate pulp on performance, egg traits and blood metabolites of aged laying hens. In this experiment 144 Hy- line (W36) laying hens from 65-75 weeks of age in 4 treatments, 3 replica More
        This experiment was conducted to evaluate the effects of different levels of dried pomegranate pulp on performance, egg traits and blood metabolites of aged laying hens. In this experiment 144 Hy- line (W36) laying hens from 65-75 weeks of age in 4 treatments, 3 replicates and 12 hens in each replicate were used in a completely randomized design. Experimental groups included: 1) control group, 2) group with 1.5% pomegranate pulp, 3) group with 3% pomegranate pulp, and 4) group with 4.5% pomegranates pulp. Using pomegranate pulp had significant effects on performance, egg traits and blood parameters of laying hens (P Manuscript profile
      • Open Access Article

        5 - The effects of fortifed Alhaji (Alhaji maurorum L.( on performance and blood metabolites of laying hens
        , A Nobakht
        This experiment was conducted to evaluate the effects of different levels of fortifed Alhaji (Alhaji maurorum L.) with 1% urea on egg production, egg traits, blood biochemical parameters and blood cells of laying hens. In this experiment 192 Hy- line W36 laying hens w More
        This experiment was conducted to evaluate the effects of different levels of fortifed Alhaji (Alhaji maurorum L.) with 1% urea on egg production, egg traits, blood biochemical parameters and blood cells of laying hens. In this experiment 192 Hy- line W36 laying hens were used from 65-76 weeks of age in 4 treatments, 4 replicates and 12 hens in each replicate in a completely randomized design. Experimental groups included: 1) control group and 2-4 groups with 1.5, 3 and 4.5 percentages of Fortifed Alhaji (FA). FA had signifcant effects on performance, egg traits, blood biochemical parameters and blood cells of laying hens (P<0.05). The highest amounts of egg weight, egg production percentage, egg mass, the best feed conversion ratio, the lowest feed cost for production each kilogram of egg, the highest egg color index and the highest amounts of Hematocrits, Hemoglobin and red blood cells were observed by using 4.5% FA. The lowest blood albumin and the highest blood HDL were obtained in treatment contained 3% FA. The overall results indicated that using 4.5% fortifed Alhaji, has positive effects on performance, egg traits, blood parameters and could reduce the production cost in laying hens.   Manuscript profile
      • Open Access Article

        6 - The effects of different levels of Alhaji maurorum L. on performance, egg traits and blood biochemical and hematological parameters of commercial laying hens
        A. Nobakht,
        This experiment was conducted to evaluate the effects of different levels of Alhaji maurorum L. on egg production,egg traits and blood parameters of commercial laying hens. In this experiment 144 Hy- line )W36( laying henswere used from 65-76 weeks of age in 4 treatment More
        This experiment was conducted to evaluate the effects of different levels of Alhaji maurorum L. on egg production,egg traits and blood parameters of commercial laying hens. In this experiment 144 Hy- line )W36( laying henswere used from 65-76 weeks of age in 4 treatments, 3 replicates and 12 hens in each replicate in a completelyrandomized design. Experimental groups included: 1( control group, 2( group with 1.5, 3 and 4.5 percentage ofAlhaji maurorum L. Different levels of Alhaji maurorum L. had signifcant effects on performance, egg traitsand blood metabolites of laying hens )p<0.05(. The highest amounts of egg mass, the highest egg productionpercentage, the best feed conversion ratio, and the lowest price of feed intake for production per kilogram of eggwere resulted by using 3% of Alhaji maurorum L.. 3% of Alhaji maurorum L. signifcantly improved special eggweight, egg yolk color and eggshell surface/eggshell weight. The lowest percentage of heterophile, the highestpercentage of lymphocyte and the lowest ratio of heterophile/lymphocyte were resulted by using 3% of Alhajimaurorum L. Different levels of Alhaji maurorum L. did not have any signifcant effects on blood biochemicalparameters of laying hens )p>0.05(. The overall results indicated that in commercial laying hens using 3% ofAlhaji maurorum L. without having any adverse effects on blood parameters, improve the performance and eggtraits of laying hens and decreased the amount of feed price for production each kilogram of egg. Using Alhajimaurorum L. in laying hens diets is an effective way in weeds control of agriculture crops Manuscript profile
      • Open Access Article

        7 - The effect of different levels of apple wastes on performance, egg quality and blood parameters of commercial laying hens
        , A. Nobakht
        In this experiment 144 Hy- line (W36) laying hens were used from 65-76 weeks of age in 4 treatments, 3 replicatesand 12 hens in each replicate in a completely randomized design. Experimental groups included: 1) control group,2) 2.5% of apple wastes, 3) 5% of apple waste More
        In this experiment 144 Hy- line (W36) laying hens were used from 65-76 weeks of age in 4 treatments, 3 replicatesand 12 hens in each replicate in a completely randomized design. Experimental groups included: 1) control group,2) 2.5% of apple wastes, 3) 5% of apple wastes, 4) 7.5% of apple wastes. The results showed that using apple wastehas signifcant effects on performance, egg quality and blood parameters of commercial laying hens (p<0.05). Thehighest amounts of egg weight and egg mass, the highest egg production percentage, the best feed conversion,and the lowest price of feed intake for production per kilogram of egg were resulted by using 5% of apple waste.Using 7.5% of apple waste signifcantly decreased the amount of feed intake. Using more than 2.5% of apple wastein laying hens diets had adverse effects on egg traits. In this case the percentages of eggshell, egg yolk, Haughunit and eggshell thickness decreased. The lowest level of blood cholesterol was resulted by using 2.5% of applewastes, whereas the highest level of lymphocyte was obtained by using 5% of apple wastes. The overall resultsshowed that using 5% of apple wastes improve the performance of laying hens, however using more than 2.5% ofapple waste has adverse effects on egg traits. Manuscript profile
      • Open Access Article

        8 - The effect of increasing levels of single strain of probiotic (Bioplus) on performance and blood metabolites of laying hens
        A. Nobakht,
        This study was conducted to evaluate the effect of increasing levels of probiotic (Bioplus) on performance, egg traits and blood serum chemical parameters of laying hens. Experiment was conducted with two hundred and ffty six Hy-line (W36) laying hens in four treatmen More
        This study was conducted to evaluate the effect of increasing levels of probiotic (Bioplus) on performance, egg traits and blood serum chemical parameters of laying hens. Experiment was conducted with two hundred and ffty six Hy-line (W36) laying hens in four treatments and four replicates with 16 hens in each replicate from 45 to 55 weeks in a completely randomized design. Experimental groups included control group and experimental groups with 0.2, 0.4 and 0.6 g/kg of probiotic (Bioplus). Different levels of probiotic signifcantly affected the performance, egg traits and blood serum chemical parameters of laying hens (P<0.05). The highest amounts of feed intake (129 g/day/hen), feed conversion (2.72) and egg specifc gravity (1.089 mg/mL3) were observed with using 0.6 g/kg of probiotic. Whereas the lowest feed price for production per kilogram of egg (853.11 toman), the lowest level of egg yolk triglyceride (437.5 mg/gr) and minimum level of blood serum phosphorus (7.42 g/dl) were observed with using 0.2 g/kg of probiotic and fnally the minimum level of blood serum cholesterol (124.33 mg.dl) were observed with using 0.4 g/kg of probiotic. The overall result of this experiment showed that the using high levels of probiotic (Bioplus) has adverse effects on performance of laying hens and not recommended.   Manuscript profile