نتایج جستجو برای: average specific growth rate
تعداد نتایج: 2832037 فیلتر نتایج به سال:
This study aimed to determine the fat requirement and effect of dietary fat levels on growth and body composition indices of hybrid Asp (Leuciscus aspius ♀) × Caspian Kutum (Rutilus frisii ♂). For this purpose, 252 fish with an average weight of 29.3 ± 5.8 g were introduced in a completely randomized design with six treatments each with triplicate groups. After two weeks of adaptation, fish wer...
In the present study the effect of Probiotic Pediococcus acidilactici (Bactocell) and Iron was examined on growth performance in Caspian Sea Brown trout (Salmo trutta caspius) fry. 2430 fish with primary weight 3.59 g were divided in 9 experimental groups each include 90 fish, with 3 replications and studied for 60 days. Fish in control group was feed using commercial food (Skretting, Co.) And...
In this contribution we resolve the long-standing dispute whether or not the Monod constant (K(S)), describing the overall affinity of an organism for its growth-limiting substrate, can be related to the affinity of the transporter for that substrate (K(M)). We show how this can be done via the control of the transporter on the specific growth rate; they are identical if the transport step has ...
BACKGROUND In ecotoxicological and environmental studies Lemna spp. are used as test organisms due to their small size, rapid predominantly vegetative reproduction, easy handling and high sensitivity to various chemicals. However, there is not much information available concerning spatial and temporal stability of experimental set-ups used for Lemna bioassays, though this is essential for inter...
This experiment was designed to investigate the use of live Eisenia fetida as a nutritional supplement on growth performance and carcass composition The purpose of this study was to evaluate the nutritional efficiency and changes in digestive enzymes of rainbow trout (Oncorhynchus mykiss). Fish were placed with average weight 58 g in a completely randomized design in 4 treatments and each with ...
The third-party motor insurance data from Sweden for 1977 described by Andrews and Herzberg in 1985 contain average claim occurrence rate (P c ) , size (C a category of vehicles specified the kilometres travelled per year (K), geographical zone (Z), no claims bonus (B) make car (M). categorical variables Z M may first be represented respectively vectors (Z 1 2 … 6 (M 8 binary variables. variabl...
There is no evidence that previous studies, available to Iran’s inflation literature, have used spectral methodology to analyze a possible relationship between inflation and its main determinants within a specific period. Accordingly, the present study investigates the effects of money growth, real output growth, output gap and interest rate changes on inflation at low and high frequencies...
Selenium, a trace mineral complement is used as cofactor of antioxidant enzymes that protects fishes against environmental stress agents and enhances performance in fishes. In this study the different levels of organic and inorganic source of selenium were included in juvenile rainbow trout diet to evaluate feed conversion ratio (FCR), specific growth rate (SGR), weight gain percent (WG), cond...
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