Quantifying Nutrient Requirements of Fish

Zeitoun, Ibrahim H.; Ullrey, D. E.; Magee, W. T.; Gill, John L.; Bergen, Werner G.

doi:10.1139/f76-019

Cited by 401 publications

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“…Similar findings have been reported in juvenile Chinook salmon (Shearer, 1988), juvenile hybrid tilapia (Shiau and Hsieh, 2001b) and grass carp (Liang et al, 2014). When the polynomial regression model (Zeitoun et al, 1976) was used to estimate the relationship between the specific growth rate and the dietary potassium concentration, a growth peak was achieved when dietary potassium concentration was 4.65 g kg −1 diet (Fig. 1).…”

Section: Discussionsupporting

confidence: 80%

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Quantifying the dietary potassium requirement of juvenile grass carp (Ctenopharyngodon idellus)

Zhu¹,

Liu²,

Chen³

et al. 2014

Aquaculture

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A growth trial lasting for 12 weeks was conducted in a semi flow-through system to determine the dietary potassium requirement of juvenile grass carp (Ctenopharyngodon idellus) with an initial body weight of 4.8 g. Seven isonitrogenous and isoenergetic semi-purified diets were compounded with different dietary potassium levels: 1. 50, 2.32, 3.28, 5.30, 7.12, 9.45 and 10.44 g kg −1 diet. The results showed that specific growth rate and feed efficiency of grass carp were significantly (P b 0.05) affected by dietary potassium level, the highest value of specific growth rate was in 5.30 g kg −1 group and feed efficiency values in 5.30, 7.12 and 9.45 g kg −1 groups were significantly higher than those in the other groups. The survival rate of grass carp in the present study was not affected by dietary potassium level (P N 0.05). The Na + -K + ATPase activity value in the gills varied significantly (P b 0.05) with dietary potassium level and showed an increasing and then decreasing trend, and the highest value was in the 7.12 g kg −1 group. Dietary potassium level showed significant (P b 0.05) effect on serum SOD, ALP and AST activities. SOD and ALP activities increased and then decreased as potassium level increased, while AST decreased first and then increased. Serum TP and TC contents increased and then decreased with potassium level (P b 0.05). TG, ALT and BUN were not affected by dietary potassium level (P N 0.05). Body potassium and moisture contents increased and lipid content decreased with dietary potassium content, while ash content in fish body increased first and then decreased as potassium content increased (P b 0.05). Body protein in the 10.44 g kg −1 group was significantly lowered (P b 0.05). However, calcium, magnesium, phosphorus and sodium contents in dry matter were not affected by dietary potassium level. When the potassium content of water was 1.86-3.10 mg L −1 , judging from the polynomial regression analysis for the specific growth rate of fish and the Na + -K + ATPase activity in the gill, and the broken-line analysis for body potassium content, the optimal dietary potassium content for juvenile grass carp was 4.65, 7.27 and 5.98 g kg −1 diet respectively.

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Section: Discussionsupporting

confidence: 80%

“…Differences between treatments were considered as significant when P was b0.05. Dietary potassium requirements for juvenile grass carp were estimated by the broken-line regression method (Robbins et al, 2006) and polynomial regression model (Zeitoun et al, 1976).…”

Section: Statistical Analysesmentioning

confidence: 99%

Quantifying the dietary potassium requirement of juvenile grass carp (Ctenopharyngodon idellus)

Zhu¹,

Liu²,

Chen³

et al. 2014

Aquaculture

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“…Quadratic regression analysis (Zeitoun et al 1976) was used to determine the unique optimum response in growth parameters (BG and WG), which represented the optimal dietary level of fish protein hydrolysate for post-larval L. vannamei. Other data from triplicate tanks of each diet were analysed using one-way analysis of variance and Duncan's multiple-range test.…”

Section: Statistical Analysis and Estimation Of The Optimal Dietary Lmentioning

confidence: 99%

“…When the quadratic regression analysis (Zeitoun et al 1976) was used for estimating the optimum dietary fish protein hydrolysate level for maximal growth performance (WG and BG) of post-larvae L. vannamei, the regression equations used were y0 (10.301x …”

Section: Biological Performance Of Shrimpmentioning

confidence: 99%

Effects of graded replacement of fish meal by fish protein hydrolysate on growth performance of early post-larval Pacific white shrimp (Litopenaeus vannamei, Boone)

Niu

Zhang

Liu

et al. 2013

Journal of Applied Animal Research

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Five dietary concentrations of fish protein hydrolysate (0, 9, 18, 27 and 36%) were included in five isonitrogenous diets (H0, H9, H18, H27 and H36) replacing fish meal by 0, 15, 30, 46 and 61% and offered to triplicate groups of early white shrimp post-larvae (mean initial wet weight 2 mg). After the 30-day feeding trial, the highest values of survival were obtained with shrimp fed diets H18 and H27. Final mean body wet weights (FBW, mg) of shrimp fed diets H9, H18, H27 and H36 were significantly higher than that of shrimp fed diet H0. Biomass gain (BG, g) of shrimp fed diets H18 and H27 were significantly higher than that of shrimp fed diets H0, H9 and H36. Specific growth rate (SGR, % day(1 ) showed the same pattern as FBW. Weight gain (WG, %) of shrimp fed diets H18 and H27 were significantly higher than that of shrimp fed diets H0 and H9. The trypsin activities of shrimp fed diets H9, H18, H27 and H36 were significantly higher than that of shrimp fed diet H0. Second-degree polynomial regression analysis on BG and WG indicated the appropriate supplement of fish protein hydrolysate in the diet of early white shrimp post-larvae should be between 21.22 and 26.35% of diet.

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“…Duncan's multiple range test (P<0.05) was performed to examine the differences in the above variable among the different treatments. Energy requirement of P. hypophthalmus, juveniles was estimated by using second order polynomial regression (Zeitoun et al 1976) model.…”

Section: Discussionmentioning

confidence: 99%

Untitled

Ranjan¹,

Jain²,

Srivastava³

et al. 2018

Turk. J. Fish. Aquat. Sci.

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A 60-days feeding trial was conducted to study the dietary energy requirement of Pangasianodon hypophthalmus (Sauvage1878) juveniles reared either at ambient (24.5°C) or higher temperature (32°C) and fed with one of the four diets having dietary energy content of 342 Kcal. 100 g -1 (T1), 379 Kcal. 100 g -1 (T2), 428.5 Kcal. 100 g -1 (T3) and 448.6 Kcal. 100 g -1 (T4). Juveniles of P. hypophthalmus with amean weight 4.27±0.12 to 4.40±0.10 g was stocked in 24 uniform size plastic rectangular tanks in triplicates with 10 fish per tank following a 2x4 factorial design. Growth performance and nutrient utilization of P. hypophthalmus were higher at the dietary energy content of 428.5 Kcal. 100 g -1 (T3) at both the temperatures. The body composition of P. hypophthalmus did not differ significantly (P>0.05) as the energy content of the diet increase. However, the tissue lipid content was significantly varied (P<0.05) at different temperature and energy levels. Based on the second order polynomial regression equation the dietary energy requirement of P. hypophthalmus was recorded to be 410 Kcal. 100 g -1 and 402.5 Kcal. 100 g -1 at 32°C and at ambient temperature(24.5°C), respectively.

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Quantifying Nutrient Requirements of Fish

Cited by 401 publications

References 0 publications

Quantifying the dietary potassium requirement of juvenile grass carp (Ctenopharyngodon idellus)

Quantifying the dietary potassium requirement of juvenile grass carp (Ctenopharyngodon idellus)

Effects of graded replacement of fish meal by fish protein hydrolysate on growth performance of early post-larval Pacific white shrimp (Litopenaeus vannamei, Boone)

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