نتایج جستجو برای: 1 specific growth rate μd
تعداد نتایج: 4671303 فیلتر نتایج به سال:
With the development of sturgeon farming in the country, we can expect the occurrence and increase of various infectious diseases in farms, and in this regard, the use of specific probiotics are important in promoting the health of these fish. In this research, which was conducted at the Iranian sturgeon research institute (Guilan-Rasht), a total of 500 pieces of Siberian sturgeon were randomly...
In this study, the effect of experimental diets containing different levels of carbohydrate and niacin on growth indices, carcass composition and heamolymph biochemical parameters of juvenile whiteleg shrimp (Litopenaeus vannamei) were investigated for 45 days. Shrimp with mean initial weight of 5±0.33 g were reared in 300 liter tanks with 8 treatments. Feeding was performed 4 times a day using...
The aim of the study is to investigate the exchange rate volatility on the non-performing loans (NPL) from 2005 to 2013 in 18 selected banks. In the first step, effective variables on NPL have been categorized in two groups namely macroeconomic and specific variables. Based on various tests of specific banking and macroeconomic variables separately, the evidence gives assurance of research vari...
using probiotics can control pathogens by a variety of mechanisms. probiotics can promote growth performance and have, therefore, become increasingly important in the aquaculture industry. convict cichlid belongs to the family of cichlidae and is known for its rapid development in laboratory conditions and is suitable for behavioral examinations. the aim of this study was to evaluate the effect...
UV-B radiation and EOD light (EOD) quality has both signaling and damaging effects based on the dosage and time of exposure. At highland areas UV-B decreases crop productivity and also light quality increase at high elevation area but EOD light quality effect was not researched based on altitude. Therefore, in the present study a field experiment was conducted to investigate the effects of UV-B...
A 60-days growth trial was conducted in a flow-through culture system to examine the effects of different dietary vitamin C and iron levels on the growth, hematological and immunological parameters of rainbow trout (Oncorhynchus mykiss) fingerlings (with average initial weight of 5.12 ± 0.02 g). Three levels of vitamin C (150, 200 and 250 mg kg-1 diet) and iron (5, 7 and 9 mg kg-1 diet) (as fer...
A 60-days growth trial was conducted in a flow-through culture system to examine the effects of different dietary vitamin C and iron levels on the growth, hematological and immunological parameters of rainbow trout (Oncorhynchus mykiss) fingerlings (with average initial weight of 5.12 ± 0.02 g). Three levels of vitamin C (150, 200 and 250 mg kg-1 diet) and iron (5, 7 and 9 mg kg-1 diet) (as fer...
Rainbow trout is the most important species of cold water fishes in Iran and the feeding diets which improve the quality and growth of this fish are of great importance. Rainbow trout Oncorhynchus mykiss (n=360) specimens with approximate weight of 2±0.02g were fed with different concentrations of sesame seed in their diet instead of fish meal for 120 days. Feeding diets were prepared in 3 sesa...
Rainbow trout is the most important species of cold water fishes in Iran and the feeding diets which improve the quality and growth of this fish are of great importance. Rainbow trout Oncorhynchus mykiss (n=360) specimens with approximate weight of 2±0.02g were fed with different concentrations of sesame seed in their diet instead of fish meal for 120 days. Feeding diets were prepared in 3 sesa...
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