Composition of Ovarian Fluid and Eggs of the University of Washington Strain of Rainbow Trout (Salmo gairdneri)

1974 ◽  
Vol 31 (11) ◽  
pp. 1796-1799 ◽  
Author(s):  
Benedict P. Satia ◽  
Lauren R. Donaldson ◽  
Lynwood S. Smith ◽  
John N. Nightingale
Keyword(s):  
Amino Acids ◽  
Rainbow Trout ◽  
Total Bilirubin ◽  
Essential Amino Acids ◽  
Salmo Gairdneri ◽  
Ovarian Fluid ◽  
University Of Washington ◽  
The University

The concentrations of major constituents of ovarian fluid were found to be lower than reported values for the same constituents in blood and urine of rainbow trout (Salmo gairdneri). Glucose and total bilirubin were significantly correlated (P < 0.05) to hatchability, whereas LDH was negatively correlated (P < 0.05).Rainbow trout egg proteins are highly nutritional and contain a higher proportion of essential amino acids than do eggs or human or cows' milk.

Amino Acid Supplementation of Casein in Diets of Atlantic Salmon (Salmo salar) Fry and of Soybean Meal for Rainbow Trout (Salmo gairdneri) Fingerlings

1975 ◽  
Vol 32 (3) ◽  
pp. 422-426 ◽  
Author(s):  
G. L. Rumsey ◽  
H. G. Ketola
Keyword(s):  
Amino Acids ◽  
Rainbow Trout ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Soybean Meal ◽  
Essential Amino Acids ◽  
Salmo Gairdneri ◽  
Fish Protein ◽  
Feed Conversion ◽  
Atlantic Salmon Salmo Salar

Fry of Atlantic salmon (Salmo salar) fed a diet containing isolated fish protein grew significantly faster than those fed a diet containing casein without supplemental amino acids, and had improved feed conversion and lower mortality. Supplementing the casein diet with essential amino acids to the levels in the isolated fish protein diet significantly increased growth rate, reduced mortality, and improved feed conversion.When fingerling rainbow trout (S. gairdneri) were fed diets containing soybean meal as the sole source of protein, additions of amino acids to simulate those levels of essential amino acids in trout eggs and isolated fish protein significantly improved growth. Additions of methionine, lysine, histidine, and leucine individually and in several combinations had no effect.

RELEVANCE OF USE OF FEED ADDITIVES BASED ON SECONDARY RAW MATERIALS OF THE FISHING INDUSTRY IN THE DIETS OF RAINBOW TROUT

Fisheries ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 87-93
Author(s):  
Alexander Sokolov ◽  
Ol'ga Dvoryaninova ◽  
Olga Zemlyanukhina
Keyword(s):  
Amino Acids ◽  
Rainbow Trout ◽  
Fish Meal ◽  
Raw Materials ◽  
Essential Amino Acids ◽  
Feed Additives ◽  
Fishing Industry ◽  
Secondary Products ◽  
Natural Sources ◽  
Fish Diets

The most important approaches to fish diets balancing on the main nutrients are mixed fodders and feed additives (FA) management. The research has shown that the distinctive feature of the developed feed additives is a high content of amino acids, as well as polyunsaturated fatty acids and minerals. FA is one of the most valuable protein products, covering from 56,9 to 255,6 % of the daily requirement for rainbow trout in essential amino acids. Thus, in general, it is possible to consider the feed additives made from secondary products as a natural sources of proteins, minerals, and vitamins which can be used in mixed fodders production for the rainbow trout with partial or full replacement in their recipes of fish meal.

Gustatory responses of the rainbow trout (Salmo gairdneri) palate to amino acids and derivatives

1983 ◽  
Vol 153 (4) ◽  
pp. 423-433 ◽  
Author(s):  
Takayuki Marui ◽  
Robert E. Evans ◽  
Barbara Zielinski ◽  
Toshiaki J. Hara
Keyword(s):  
Amino Acids ◽  
Rainbow Trout ◽  
Salmo Gairdneri ◽  
Amino Acids And Derivatives

Modification of the Rheotropic Behavior of Male Rainbow Trout (Salmo gairdneri) by Ovarian Fluid

1979 ◽  
Vol 36 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Mary E. Emanuel ◽  
Julian J. Dodson
Keyword(s):  
Rainbow Trout ◽  
Key Words ◽  
Salmo Gairdneri ◽  
Fish Migration ◽  
Odor Plume ◽  
Ovarian Fluid ◽  
Water Currents ◽  
Olfactory Stimuli

The upstream orientation and frequency of upstream movement of ripe male rainbow trout (Salmo gairdneri) in the presence of ovarian fluid obtained from spawning females of the same species were observed and quantified. In a stream tank, male trout moved upstream in the ovarian fluid odor plume. In an optomotor tank, male trout exhibited an increase in the frequency of upstream orientation and movement in the presence of diffuse, nondirectional ovarian fluid. It is concluded that water currents provide directional cues and olfactory stimuli regulate the orientational and kinetic components of the rheotropic response. The significance of this mechanism of orientation in fish migration is discussed. Key words: rheotropism, behavior, olfaction, orientation, migration, ovarian fluid

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