Effects of tank colour on feed intake, specific growth rate, growth efficiency and some physiological parameters of rainbow trout (Oncorhynchus mykiss Walbaum, 1792)

2014 ◽  
Vol 31 (2) ◽  
pp. 395-397 ◽  
Author(s):  
S. Rahnama ◽  
M. S. Heydarnejad ◽  
M. Parto
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Specific Growth Rate ◽  
Feed Intake ◽  
Specific Growth ◽  
Growth Efficiency ◽  
Physiological Parameters ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Tank Colour

RNA/DNA ratios in white muscle as estimates of growth in rainbow trout held at different temperatures

1990 ◽  
Vol 68 (7) ◽  
pp. 1494-1498 ◽  
Author(s):  
Moira M. Ferguson ◽  
Roy G. Danzmann
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
White Muscle ◽  
Specific Growth ◽  
Fish Size ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Different Temperatures ◽  
Specific Growth Rates ◽  
Rna And Dna

The concentrations of RNA, DNA, and protein in white muscle from 240 uniquely tagged rainbow trout (Oncorhynchus mykiss) held at three temperatures (5, 8 (control), and 11 °C) were measured. Both RNA and RNA/DNA ratios were better predictors of recent length- and weight-specific growth rates than they were of absolute fish size. Furthermore, RNA concentrations were better predictors of growth than RNA/DNA ratios. The strength of the regression between either RNA/DNA ratio or RNA and growth rate did not differ consistently among temperatures. Fish reared at warmer temperatures had lower concentrations of RNA for both a given growth rate and a given DNA concentration compared with cold-reared trout. Warm-reared fish also had lower concentrations of DNA and higher protein/DNA ratios than cold-reared trout when fish size was standardized. The concomitant decrease in both RNA and DNA concentrations resulted in marginally lower RNA/DNA ratios in warm-reared fish.

scholarly journals Introduce the Siberian Sturgeon (Acipenser baerii) to Turkish aquaculture industry: Duoculture possibility with Rainbow Trout

2019 ◽  
Vol 36 (3) ◽  
pp. 211-217
Author(s):  
Kübra Ak ◽  
İlker Zeki Kurtoğlu ◽  
Ramazan Serezli ◽  
Şevki Kayış ◽  
İlhan Yandı
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Specific Growth ◽  
Condition Factor ◽  
Siberian Sturgeon ◽  
Acipenser Baerii ◽  
Acipenser Baeri ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Aquaculture Industry

Duo culture response of Siberian sturgeon (Acipenser baeri) and rainbow trout (Oncorhynchus mykiss) was evaluated in culture tank conditions. Triplicated culture groups were planned as: mono-culture sturgeon (M, n=10), duo-culture sturgeon (DM, n=10) and duo-culture trout (DA, n=10), and mono-culture trout (A, n=10). Examination of mono and duo culture of each species, showed neither sturgeon nor trout, was indicated any significance on specific growth rate (SGR) and condition factor (CF). As for final biomasses among groups, no significant differences were recorded (p<0.05).

Effect of animal and vegetal protein diets on feed intake and apparent digestibility of nutrients in rainbow trout (Oncorhynchus mykiss) infected by Aeromonas salmonicida, with and without chronic hypoxia stress

1998 ◽  
Vol 55 (9) ◽  
pp. 2019-2027 ◽  
Author(s):  
H Néji ◽  
J de la Noüe
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Feed Intake ◽  
Chronic Hypoxia ◽  
Phosphate Buffer Solution ◽  
Aeromonas Salmonicida ◽  
Animal Protein ◽  
Fish Feed ◽  
Apparent Digestibility ◽  
Rainbow Trout Oncorhynchus Mykiss

This study was undertaken to investigate the effects of bacterial infection (Aeromonas salmonicida) and chronic hypoxia on mortality, feed intake, and apparent digestibility of each of two diets in rainbow trout (Oncorhynchus mykiss). The diets were isonitrogenous (gross basis); one was based mainly on animal protein and the other on vegetal protein. In each of two separate and successive experiments, where the first served as a control for the second, fish were immersed on day 0 (d0) in either a sterile phosphate buffer solution (first experiment) or a suspension of A. salmonicida (second experiment). Thereafter, the fish were either exposed on d2 for 12 days to hypoxic conditions (60% of water oxygen saturation) or maintained under normal conditions. Feed intake was measured daily, while apparent digestibility coefficients for gross energy, dry matter, and crude protein were measured on d0, d2, d5, d9, d11, and d14. Among all infected fish, feed intakes were reduced (P < 0.05), regardless of the source of dietary protein or the degree of water oxygenation. Also, regardless of infection, the feed intakes of hypoxic fish that were fed the vegetal protein based diet were significantly less than those of fish that were fed the animal protein based diet. This response, however, was transitory, since normal levels of feed intake in the former fish were found by d3. The apparent digestibility coefficients for all parameters were unaltered by hypoxia (P > 0.05), but they were significantly reduced (P < 0.05) by A. salmonicida infection, especially during the critical period of infection (d5 and d9).

Correlating food intake and specific growth rate of rainbow trout of different sizes

Aquaculture ◽  
1992 ◽  
Vol 100 (1-3) ◽  
pp. 326
Author(s):  
I.D. McCarthy ◽  
C.G. Carter ◽  
D.F. Houlihan
Keyword(s):  
Growth Rate ◽  
Rainbow Trout ◽  
Food Intake ◽  
Specific Growth Rate ◽  
Specific Growth

The effect of vitamin premix in extruded plant-based and fish meal based diets on growth efficiency and health of rainbow trout, Oncorhynchus mykiss

Aquaculture ◽  
2008 ◽  
Vol 283 (1-4) ◽  
pp. 148-155 ◽  
Author(s):  
Frederic T. Barrows ◽  
T. Gibson Gaylord ◽  
Wendy M. Sealey ◽  
Lucas Porter ◽  
Charlie E. Smith
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Fish Meal ◽  
Growth Efficiency ◽  
Rainbow Trout Oncorhynchus Mykiss
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