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Poultry Science Journal - Volume:4 Issue: 1, Winter-Spring 2016

Poultry Science Journal
Volume:4 Issue: 1, Winter-Spring 2016

  • تاریخ انتشار: 1395/02/30
  • تعداد عناوین: 9
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  • Torki M.*, Mirzaee M., Habibian M Page 1
    The effect of supplementing two commercial multienzymes to diets included two barley cultivars (Sararood [71.99%] and Valfajr [66.39%]) on performance, egg quality, and blood parameters of laying hens was investigated in an 8-wk (65 to 73 wk of age) experiment. The commercial multienzymes were Grindazym™ (with mainly β-glucanase and xylanase activity) and Hemicell® (with mainly β-mannanase activity). Each dietary treatment consisted of five replicates of six hens. Barley cultivar had no significant effect on the measured criteria and there was no interaction between barley cultivar and enzyme throughout the study. Diet supplementation with enzymes reduced feed intake (P
    Keywords: Barley cultivar, Egg quality, Enzyme, Laying hen, Performance
  • Aa Saki*, Aliarabi H., Cheraghi P., Mirzaie Goudarzi S., Ahmadi A Page 13
    The influence of dietary oxidized oil was studied on laying hen performance, egg quality and blood metabolites. Experiments were conducted on 160 laying hens (Hy-Line W 36, 54-61 weeks of age) in a completely randomized design with five treatments and four replicated cages containing eight birds per cage. Dietary treatments replaced fresh soybean oil in the control diet (3% fresh soybean oil, 15.25% crude protein, and 2858 Kcal/kg metabolizable energy) with 0, 25, 50, 75 and 100% oxidized oil. Egg production (EP) and egg weight (EW) were recorded daily and feed intake (FI), feed conversion ratio (FCR), and egg mass (EM) were calculated weekly. Egg quality traits were recorded on a biweekly basis. Hen’s body weight (BW) was measured individually at the beginning and end of the experiment. Serum metabolites were determined at the end of the experiment. There was a significant difference between diets with different oxidized oil levels in EW, EM, EP, and FCR (P
    Keywords: Oxidized oil, Laying hen, Performance, Blood parameter
  • Hassanpour H.*, Bahadoran S., Borjian N Page 19
    Under high altitude conditions, the effects of vitamin E (α-tocopherol) on growth performance, intestinal morphology (villus size and type), and absorptive surface area of broiler chickens were evaluated. Chickens were fed diets supplemented with 0, 100, 200 or 400 IU/kg vitamin E for 42 days. On days 14, 28 and 42, birds were sacrificed and three segments of small intestine were dissected. The feed conversion ratio at day 42 significantly decreased when supplementing the diet with 400 IU/kg vitamin E (P
    Keywords: Vitamin E Tocopherol_Intestinal absorption_Intestinal morphology
  • Karimzadeh S., Rezaei M.*, Teimouri Yansari A Page 27
    The aim of the present study was to evaluate the effects of canola bioactive peptides (CBP) produced by enzymatic hydrolysis of canola meal on performance, digestive enzyme activity, nutrient digestibility, gut microflora and intestinal morphology of broiler chickens. A total of 250 one-day-old Ross 308 male broiler chicks were randomly allocated to 5 dietary treatments with 5 replicates of 10 birds per each. Birds were fed with a basal diet (Control) or a basal diet supplemented with CBP at 100, 150, 200 and 250 mg/kg over 42 days. Results indicated that addition of 200 and 250 mg CBP/kg diet increased (P
    Keywords: Broiler, Performance, Nutrient digestibility, Canola meal peptides, Intestinal morphology
  • Falaki M., Shams Shargh M., Dastar B., Hashemi Sr*, Sadeghi Mahoonak Ar Page 37
    We evaluated the effects of dietary Carum copticum essential oil (CCEO) on growth performance, carcass characteristics and intestinal microflora of broiler chickens. A total of 240 Cobb broiler chickens were allocated to five dietary treatments, each with four replicates of 12 birds. Dietary treatments were prepared by formulating a corn-soybean meal-based diet free of antibiotics (Control) and supplementing the basal diet with three levels of CCEO at 150, 250, 350 mg/kg or antibiotic Virginiamycin (VIR) at 200 mg/kg. Treatments were fed from 0 to 42 d of age. Body weight gain (BWG) decreased linearly (P=0.035) with increasing CCEO while VIR increased body weight gain at 1 to 10 d compared to the control treatment (P 0.05). There were no differences in carcass characteristics among broiler chickens fed the control, CCEO and VIR diets (P > 0.05). Lactic acid bacteria in the cecum and ileum at 42 d of age were not influenced by the treatments (P > 0.05) but there was a linear increase of the log numbers of E. coli in the ileum (P=0.02) with increasing CCEO (P
    Keywords: Broiler, Carum copticum, Essential Oil, Performance, Intestinal microflora
  • Baghban P., Daneshyar M.*, Najafi R Page 47
    The effect of cinnamon and turmeric powders on performance, and blood parameters of broiler chickens under heat stress were investigated. 200 one-day-old male chicks (Ross 308) were used in a completely randomized design with four treatments and five replicates with 10 birds in each replicate. All birds were treated with heat stress (32οC) and were either fed no any supplement (control), or 0.5% turmeric, 0.5% cinnamon, and a blend of cinnamon and turmeric (0.25% each) when they were 25 to 42 days of age. We found that supplementation of turmeric, cinnamon, and their combination increased feed intake (FI) and body weight gain (BWG) compared to control birds (P 0.05). In conclusion, dietary supplementation of cinnamon and turmeric either alone or together improve the performance of broiler chickens under heat stress by reducing lipid peroxidation.
    Keywords: Cinnamon, turmeric acid, heat stress, Blood parameter
  • Salih R., Tesfaye E.*, Tamir B., Singh H Page 55
    This study was conducted to examine the effects of feed restriction on production performance as well as traits relating to egg and carcass yield in Potchefstroom Koekoek dual purpose chicken bred under Ethiopian conditions. A total of 240 one-day-old dual purpose Koekoek chicks were randomly distributed into 12 experimental pens, representing 4 feeding treatments to evaluate the performance of chicks on body weight and age at onset of laying eggs (AOLE), egg quality, and carcass parameters. Treatments were control (unrestricted feed, diet ad libitum), R7-28 (restricted feed at 7, 10, 13, 16, 19, 22, 25 and 28 days of age), R35-56 (restricted feed at 35, 38, 41, 44, 47, 50, 53 and 56 days of age) and R63-84 (restricted feed at 63, 66, 69, 72, 75, 78, 81 and 84 days of age) groups. The study was lasted for a period of 23 weeks during which feed consumption and growth performance record were taken. At the end of the experiment, six pullets from each treatment were randomly selected and slaughtered to evaluate carcass parameters. The results showed a significant difference between the control and R63-84 group's birds in both daily and total feed consumption (P
    Keywords: Laying egg, Body weight, Feed restriction, Koekoek chicken, Carcass characteristic
  • Kalantar M.*, Khajali F., Yaghobfar A Page 63
    The effects of grain and carbohydrase enzyme supplementation were investigated on digestive physiology of chickens. A total of 625 one-day-old chicks (Ross 308 strain) were randomly assigned to five treatments in a completely randomized design. Treatments included two different types of grains (wheat, and barley) with or without a multi-carbohydrase supplement. The experimental diets were formulated to have similar contents of crude protein, metabolizable energy, and total non-starch polysaccharides. A corn-based diet was also considered to serve as a control. Feeding barley-based diet with multi-carbohydrase led to higher feed intake (P
    Keywords: Chicken, Cereal, Enzyme, Growth, Gut function
  • Sinaei Kh, Houshmand M.* Page 73
    The effects of raw or sodium hydrogen carbonate-treated oak acorn was evaluated on broiler chicken performance and cecal flora. A total of 340 one-day-old male and female broiler chicks were used in a completely random design with five experimental treatments and four replicates with 17 birds each. A corn-based diet served as the control and four treatment groups were diets containing 20 or 25% raw or treated oak acorn. Ground oak acorn was treated with 0.67 M sodium hydrogen carbonate solution at 820 mL/kg of oak acorn dry matter and incubated for 12 hrs at 37°C. Isocaloric and isonitrogenous starter and finisher diets were given to chicks from 1 to 21 and 22 to 42 d of age, respectively. Treatment significantly reduced the amount of total phenols and tannins in the feed (p
    Keywords: Broiler, Oak acorn, Performance, Sodium hydrogen carbonate