نتایج جستجو برای: feed conversion ratio
تعداد نتایج: 661464 فیلتر نتایج به سال:
This study was conducted to evaluate the effects of lavender (Lavandula angustifolia)extract as an alternative to flavophospholipol on performance, carcass characteristics, antioxidant status,meat quality, intestinal morphology and ileal microflora of broilers. A total of 220 day-old male broiler chicks (Ross 308) were used in a completely randomized design with five treatments each re...
Toxic effects of Aflatoxin B1 on growth performance and humoral immune response against Newcastle disease Virus (NDV) vaccine were determined in Japanese quails. Quail chicks (n=300) were divided into five groups and each group was further sub-divided into two subgroups. One subgroup of each group was vaccinated with NDV vaccine to study the antibody response. Experimental diets were prepared b...
An experiment with 720 pullets was conducted to investigate the effect of dietary energy levels of pullet and dietary energy and fat of laying ration on subsequent performance parameters during 14-20 and 22-44 weeks of age. In the first period, white leghorn pullets were fed with two diets of low and high density energy (2600 and 3200 Kcal ME/kg). In the lating period (second period), birds, in...
in order to study the effect of dietary physical form on the fattening performance of holstein male calves, an experiment was conducted in animal science research institute of iran in 2011. the experimental diets were formulated and prepared with two physical forms including total mixed ration (tmr) and densified complete feed block (dcfb). in a completely randomized block design, with two trea...
This study investigated the effects of coenzyme Q10 (CoQ10) supplementation on hematological, enzymes activities and biochemical parameters in broilers with pulmonary hypertension syndrome (PHS).Two hundred and forty 1-d-old Ross 308 male broiler chicks were randomly allocated into 3 groups with 4 replicates. From d 14, the diets were supplemented with CoQ10 at levels of 0, 20 and 40 mg/kg, res...
The catalytic reduction of sulfur dioxide with methane to form elemental sulfur has been studied. Al2O3, Cu-Al2O3 and Ni-Al2O3 were examined as catalysts and their performances were compared in terms of SO2 conversion and selectivity. Performance of the catalyst extremely enhanced when nickel and copper were added as promoters. The effects of temperature, SO2/CH4 molar ratio, and reaction...
Two experiments were conducted to investigate the effect of dietary energy levels on the performance of Arian broiler chicks. Trial 1 was performed in summer and trial 2 in fall. Both experiments were accomplished in 5×2 factorial designs, involving 5 levels of dietary metabolizable energy and two sexes. Each of the 10 resulting treatments was replicated 4 and 3 times in trials 1 and 2, respect...
The aim of this study was to survey the effect of different dietary fiber source and thereonine levels on growth response, nutrients digestibility and some digesta characteristics of broiler chickens. A total of 180 day-old male Ross 308 chicks were used in a completely randomized design with a factorial arrangement of 2×3 with 4 replicates of 6 birds each for a period of 24 days. The diets co...
an experiment was conducted with two hundred and twenty day-old male broiler chicks (ross 308) in five groups to investigate the effects of different levels of 0, 0.2, 0.4 and 0.6% thyme extract in drinking water (including 27.4 mg sodium nitrate per liter) on broiler performance and antioxidantstatus and blood gas indices. no significant differences were observed between the treatments for bod...
two hundred and twenty one-day male chicks (ross 308) were used in a completely randomized design with 5 treatments and four replicates each to investigate the effects of the different levels of 0.15, 0.3 and 0.6 percent rosemary extract along with nitrate (27.4 mg sodium nitrate/liter water) in drinking water on growth, some blood parameters and carcass characteristics of broiler chickens. no ...
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