One hundred prisoner cichlid fish, (2.5 g), were fed with levels 1, 2 and 3 grams of prebiotic inulin per kg of diet over a period of 60 days. The highest weight gained in treatment 3 g of inulin, which was not significantly different from treatment  2 g of prebiotic dietary (P>0.05). The highest specific growth rate was measured in 2 and 3 g inulin. The highest feed conversion ratio and the h...

the present study sought to investigate the impact of using mind-mapping technique instruction on female elementary efl learners reading comprehension; it also investigated their attitudes towards using mind-mapping technique as a tool to improve their reading comprehension. this study followed a quasi-experimental design with two intact groups as experimental, and control groups. the participa...

monumental changes occurring on a daily basis have altered the world into a global village of expanding technology and shrinking geography in which preparing language learners for intercultural communication seems to be a sine qua non for modern language education. employing a cross-sectional design in its first phase, this study investigated the intercultural sensitivity and language proficien...

 This study was performed to investigate the possibility of replacing earthworm powder (Eisenia foetida) with fish powder in the diet of western white shrimp Litopenaeus vannamei and its effect on factors related to growth performance, survival and feed conversion ratio for 50 days. In each tank, 150 pieces, 15-day-post larvae weighing 0.05 g and a length of 9 mm were stored in sea water with a...

The aim of the present study was to evaluate the effects of different levels of prebiotic on growth performance and non-specific immune parameters of zebra fish. Four hundred and twenty fish (mean weight 45 ± 0.1 mg) were supplied, randomly stocked in aquaria assigned to four treatments repeated in triplicates and fed with experimental diets contain 0, 0.5, 1 and 2% prebiotic for 8 weeks. At th...

rivers and runoff have always been of interest to human beings. in order to make use of the proper water resources, human societies, industrial and agricultural centers, etc. have usually been established near rivers. as the time goes on, these societies developed, and therefore water resources were extracted more and more. consequently, conditions of water quality of the rivers experienced rap...

In this study, the effect of the color of the bedding of cultivating aquariums (white, black, green, blue) on growth performance, nutrition and biochemical composition of the body of large freshwater shrimp (Macrobrachium rosenbergii) post larvae was investigated. All laboratory and experimental stages of this study were carried out in the fall of 1397 and for 60 days in an ornamental fish plan...

The purpose of this study was to evaluate the effects of livergol drug on growth indices and prevention of fatty liver disease in different levels of fat in common carp diets. In 2017, 9 diets of different nutrients were prepared with 3 levels of 0, 0.5 and 1% livergol and three levels of 5, 10 and 20% fat. The fish were fed for 180 days. After the end of breeding period, fish growth indices (e...

there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...