نتایج جستجو برای: four replicates and 12 chicks per each replicate treatments were include 1 negative control without additives
تعداد نتایج: 17610768 فیلتر نتایج به سال:
background: heat stress declines the performance through physiologic changes of the poultry. objectives: this experiment was conducted to evaluate the effects of different levels of l-carnitine on performance, carcass characteristics and some blood parameters of broiler chickens fed with high fat diets under heat stress. methods: two hundred one-day-old broiler chicks (ross 308) were used in a ...
this study aimed to investigate the effects of listening strategy training on iranian efl learners listening comprehension and use of such strategies. this work, employing an experimental methodology, was conducted among 60 adult efl learners from a language institute in isfahan, iran, as participants. the participants, who were selected based on the results of a placement test, were assigned t...
this study was conducted to evaluate the effects of in ovo feeding of different nutrients on hatchability, initial weight after hatch, growth performance, blood parameters, immune organs and intestinal morphology of broiler chicks. the experiment was conducted in a completely randomized design with 5 treatments, 3 replicates and 16 fertile eggs from ross 308 breeders (28 week old) in each repli...
This experiment was conducted to investigate the effects of dietary sesame oil contains natural antioxidant and/or α-tocopheryl acetate on growth performance, blood metabolites and small intestinal morphology of male broilers. A total of 100 Ross male broilers with 7 days of age, were randomly divided into four ditary treatments. Each diet was randomly fed to five replicates of 5 chicks each. T...
In order to investigate the effects of microwave irradiation of barley or enzyme supplementation of barley based diets, 12-day-old broiler chicks (n=320) from Ross 308 strain were arranged in a 2×2 factorial experiment consisting of 2 duration times of microwaves irradiation of barley (0 and 220 second) and 2 levels of dietary Rovabio multienzyme level (0 and 1 g.kg-1) with 4 replicates per tre...
A total of 448 Ross 308 seven-day old male broiler chicks were assigned to seven treatments with four replicates, each containing 16 chicks, to determine effects of physical sizes and rate of dietary inclusion of clinoptilolite. The chicks fed diet containing clinoptilolite at 1.5% and particle size of 0.4-0.8 mm showed significantly higher body weight gain than the control group that did not r...
Abstract Antibiotics/feed additives are commonly used in poultry rations to prevent disease, increase feed efficiency, and improve performance. Plants the alternatives replace antibiotics that safe without side effects for chicken meat consumers. The aim of this study was evaluate effect administration a mixture plant powder Anacardium occidentale shell liquid smoke on total bacteria Escherichi...
Three hundred and sixty one-day-old chicks (Arian) were used in a completely randomized design with five treatments and four replicates for each treatment. The experimental treatments included: control group (without barley) with and without enzyme, 20% hulled barley with and without enzyme, 20% hull-less barley with and without enzyme. Body weights, feed intake and feed conversion were determi...
the study was conducted to evaluate the effect of using powder and hydroalcoholic extract of carum copticum on growth performance, blood parameters, relative weight of internal organs, intestinal microflora, intestinal histomorphology and meat quality in broilers in comparison to virginiamycin antibiotic. the experiment was conducted in a completely randomized design with 8 treatments, 3 replic...
In order to study the effects of various levels of protein in diet based on total and digestible amino acids on performance and carcass traits of broilers, an experiment was conducted as a completely randomized design with 288 broiler chicks from Cobb 500 strain in 6 treatments, each treatment consist of 3 replicates with 16 chicks per replicate. Treatments were the diets as follow: 1) diet for...
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