The aim of this study was to evaluate the effects of copper (Cu) sulfate (0, 125 and 250 mg/kg), arginine (Arg) supplements (0, 0.1 and 0.2%) and glucosinolate content on performance and carcass traits in broiler chickens fed with canola meal based diet. During a three-week experimental period (22-42 d), 405 male broilers were used in completely randomized design with a 3 × 3 factorial experime...

Factorial designs are common in psychology research. But they nearly always used without control of the experiment-wise Type I error rate (EWER), perhaps because a lack awareness about viable procedures for that purpose and also appreciation problem inflation. In this article, key concepts relating to inflation discussed, with emphasis on 2 × factorial design. Simulations evaluate various appro...

effect of gibberellic acid on marigold (calendula officinalis l.) was evaluated in a pot culture experiment. a factorial experiment based on completely randomized design including 12 treatments and four replications was carried out. main factor was foliar application stages (first, second and third) and sub factor included different concentrations of ga3 (0, 50, 150 and 250 mg l-1). results sho...

this study was performed in order to evaluate the effects of irrigation and application of zn fertilizer on  seed storage proteins  in chickpea, azad cultivar. experiment was performed in an factorial using randomized complete block design with three replications. in this experiment, two factor consist of irrigation in three levels (i1= non irrigation and i2= irrigation in flowering stage), zn ...

in order to investigating the effects of planting date and harvest time on the quality performance of pear millet, an experiment was conducted in agriculture research station of gorgan in a randomized complete block design with four replications and factorial arrangement. this experiment included five planting dates (may 5th, may 25th, june 14th ,july 4th, july 24th) and three harvest times (90...

Vinod Goel [1] proposes a theory of notationality, derived from observations of interior designers, that distinguishes three classes of symbol systems: notational, non-notational, and discursive. He theorizes that design processes can be improved through the use of non-notational symbols. This paper presents the 2 factorial designed experiment used to test the applicability of this theory to el...

The objectives of this work were to study the responses of one Leghorn and two broiler stocks and sexes to different levels of Thr and to estimate their requirements for this amino acid. All experiments were conducted with birds from 1 to 18 d of age. Body weight gain (BWG) and feed consumption were measured on the eighteenth day, and feed conversion ratio (FCR) was calculated. At Day 18, three...

It is recognized that the factorial approach first introduced by R.A. Fisher is the correct and scientific approach in conducting multi-factored experiments. In this paper, an approach that uses specially designed toys and software that allow students to conduct multi-factored experiments, analyze the data collected, and do follow-up experiments, is described. Several physical and software toys...

Design of Experiment commonly referred to as DOE is one of the extensively used methods for experimental study of many processes in engineering. It is a statistical approach in which a mathematical model is developed through experimental runs. DOE provides us the opportunity to optimize and predict possible output based on the parameters setting. In this study, a review is done on DOE technique...