نتایج جستجو برای: beluga
تعداد نتایج: 508 فیلتر نتایج به سال:
A 3×4 factorial experiment was conducted for 45 days to determine the effects of diets containing different levels of protein and fat on growth of fingerlings Beluga (Huso huso L.1758). Twelve different diets were formulated with 3 levels of protein (45,50 and 55) and 4 levels of oil including fish oil and sunflower oil (0.5 ,4 , 8 and 12). 1260 Beluga fingerlings with an initial body weight (I...
Background and purpose: High concentrations of heavy metals have always been a major cause of contamination in aquatic ecosystem. Sturgeons are important sources of food and income throughout the world. In this study, concentrations of Cadmium, Vanadium, Nickel and Zinc (Cd, Ni, V and Zn) were examined in edible and inedible tissues of stellate sturgeon (Acipenser stellatus) and beluga (Huso hu...
Aerial surveys of belugas, or white whales, Delphinapterus leucas, were conducted off West Greenland in March 1993 and 1994. These surveys were designed to permit comparisons with similar surveys in 1981, 1982, and 1991. Differences in methods between the surveys in the early 1980s and those in the 1990s should mean that the 1990s surveys were, if anything, more efficient than the 1980s surveys...
Fatty acid variation in beluga (Delphinapterus leucas) blubber: implications for estimating diet using fatty acids Heather R. Smith Chair of Supervisory Committee: Associate Professor Glenn R. VanBlaricom School of Aquatic and Fishery Sciences Diet is one of the most important aspects of the ecology of any species, yet remains difficult to estimate for many marine mammals. Quantitative fatty ac...
BACKGROUND: Hematological studies are valuable diagnostictechniques in the medical care of fish, reflecting the healthcondition and the effects of environmental factors on fish. OBJECTIVES:Due to the high value of sturgeon fish and necessityto recover the brood stock, this study was done to provide dataabout hematological parameters and reproduction normative ofwild brood stock beluga, Huso hus...
This study was accomplished to investigate the effect of Artemia urmiana nauplii enriched with Pediococcus acidilactici as probiotic on growth performance and survival rate of great sturgeon, Huso huso. Artemia nauplii were enriched with P. acidilactici at a final concentration of 1010 CFU mL-1 in three time dependent treatments as 3 h (T3), 6 h (T6), 9 h (T9), and one non-enriched Artemia as ...
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