Effect of dietary lipid level on growth performance, feed utilization and body composition by juvenile red spotted grouper (Epinephelus akaara)

Jiang, Yudong; Wang, Jiteng; Han, Tao; Li, Xinyu; Hu, Shui‐Xin

doi:10.1007/s10499-014-9801-7

Cited by 31 publications

(21 citation statements)

References 33 publications

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“…For carnivorous and marine fish, dietary lipids are major source of energy due to their poor ability to utilize carbohydrate for energy (Cowey & Sargent, ). Our observations also indicate that the utilization of carbohydrate as an energy source in this species is limited (Unpublished data), while adequate dietary lipid supplementation could enhance the growth performance (Jiang, Wang, et al., ). In the study of catfish ( Silurus meridionalis ) (Liu, Mai, Zhang, Chen, & Leng, ), it was suggested that both dietary protein and lipid are important for the fish growth.…”

Section: Discussionsupporting

confidence: 55%

“…Many studies have pointed out that increasing dietary lipid or energy levels have a protein‐saving effect on fish (Chatzifotis et al., ; Ding et al., ; Luo et al., ), while it is not observed in this study based on ER, PER and NR values. Although the growth of juvenile E. akaara increased with increasing dietary lipid levels, no protein‐saving effects by dietary lipid level were observed in previous study (Jiang, Wang, et al., ). In agreement, based on the results of whole‐body lipid content, LG and VSI values, it indicates that high dietary lipid enhanced fat deposited in the viscera of juvenile E. akaara .…”

Section: Discussionmentioning

confidence: 55%

“…Our previous study has suggested that the dietary protein requirement for E. akaara is about 508.3 g kg −1 based on dose–response curves (Wang et al., a). In another study, the recommended dietary lipid level of this species was set at about 90 g kg −1 in a diet containing almost 510 g kg −1 protein (Jiang, Wang, Han, Li, & Hu, ). Moreover, with considering the energy or lipid level of the diet, the protein requirement values for a given fish species were suggested to be more accuracy (Wilson, ).…”

Section: Introductionmentioning

confidence: 99%

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Effects of dietary protein and lipid levels with different protein-to-energy ratios on growth performance, feed utilization and body composition of juvenile red-spotted grouper,Epinephelus akaara

Wang

Han

et al. 2017

Aquacult Nutr

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An 8‐week feeding trial was conducted to assess dietary protein and lipid levels on growth performance, feed utilization and body composition of juvenile red‐spotted grouper (7.85 ± 0.03 g fish−1). Nine semi‐purified diets were formulated containing varying protein levels (440–520 g kg−1, dry matter) and lipid levels (60–120 g kg−1, dry matter). The weight gain of juvenile Epinephelus akaara was affected by dietary protein (p = .005) and its interaction with dietary lipid (p = .020). Viscerosomatic index, intraperitoneal fat ratio and whole‐body lipid level increased with increasing dietary lipid level (p < .001). Nitrogen retention was not affected by dietary protein and lipid, while lipid retention decreased with increasing dietary lipid level (p < .001). The plasma blood urea nitrogen increased with increasing dietary protein level (p = .003). This study showed that diet with 520 g kg−1 protein and 60 g kg−1 lipid with 30.58 mg kJ−1 P:E provided a maximal growth for this species. Moreover, an increase in dietary lipid levels (from 60 to 90 g kg−1) could reduce the protein requirement (from 520 to 480 g kg−1) without affecting the growth performance, while higher fat deposition was observed in fish fed high‐lipid diets.

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Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

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Effects of dietary protein and lipid levels with different protein-to-energy ratios on growth performance, feed utilization and body composition of juvenile red-spotted grouper,Epinephelus akaara

Wang

Han

et al. 2017

Aquacult Nutr

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“…Like that of HSI, another important indicator of VSI values also showed similar decreasing trend with the increasing CP levels. Viscerosomatic index was previously reported to directly influence the yield in fish production (Han et al, ; Jiang, Wang, Han, Li, & Hu, ), which was also affected by dietary protein levels.…”

Section: Discussionmentioning

confidence: 98%

Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

et al. 2019

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A 12-week feeding trial was conducted to determine the influence of dietary protein levels on growth performance, body composition, haematological parameters and digestive enzyme activity of Chinese rice field eel (Monopterus albus) fingerlings. Six isolipidic experimental diets (27.89%, 32.23%, 35.95%, 40.06%, 43.31% and 46.53%) were formulated to randomly assign to triplicate groups of 50 rice field eel fingerlings (5.0 ± 0.5 g) cultured in plastic cages. Results indicated that the best growth performance of fish with the highest WG (158.68 ± 31.59%) and SGR (2.28 ± 0.21%) was obtained at 40.06% group. Significant alterations were demonstrated on whole-body crude protein, crude lipid and amino acid profile by different dietary protein levels.Besides, haematological parameters including triacylglycerol, aspartate aminotransferase and alkaline phosphatase decreased with various levels by the increasing of dietary protein levels. The lowest pepsin activity was observed in 27.89% protein group, which suggested lower availability of protein as substrate for protease activity. Meanwhile, the highest amylase activity in fish of 27.89% group indicated higher carbohydrate level in this group. Based on the polynomial regression analysis of WG and SGR, the dietary protein requirement for fingerlings of Monopterus albus was estimated to be 386.4-390.8 g/kg, respectively, with the lipid level of 10.08%. K E Y W O R D S body composition, dietary protein requirement, digestive enzyme activity, growth performance, Monopterus albus, serum biochemistry | 401 YUE Et al.

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“…Furthermore, fish fed with the 10.9 carbohydrate-to-lipid ratio diet (33.75% carbohydrate and 3.11% lipid) showed the worst growth performance. Lipids are an important ingredient in diets, as they serve as the source of both energy and essential fatty acids (Watanabe 1982;Jiang et al 2015). Luo et al (2004b) found that the optimal dietary lipid content of Orange-spotted Grouper was 10%; thus the 10.9 carbohydrate-to-lipid ratio diet, which only contains 3.11% lipid, would not be able to satisfy the requirements for growth (Lin and Shiau 2003).…”

Section: Whole-body and Tissue Compositionmentioning

confidence: 99%

Effects of Dietary Carbohydrate‐to‐Lipid Ratios on Growth and Body Composition of Orange‐spotted Grouper Epinephelus coioides

et al. 2016

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Growth performance of juvenile Orange-spotted Grouper Epinephelus coioides fed isonitrogenous (45% crude protein) and isoenergetic diets with varying carbohydrate-to-lipid ratios (0 to 10.9) were evaluated. Triplicate groups of 18 fish (initial mean individual body weight, 16.4 g/) were fed to satiety for 8 weeks. At the termination of this trial, significant differences (P < 0.05) were found on the growth performance. Weight gain and specific growth rate values increased with decreasing dietary carbohydrate-to-lipid ratios. The highest feed conversion ratio value and the lowest protein efficiency ratio value were observed in fish fed the 10.9 carbohydrate-to-lipid ratio diet. Besides, fish fed the 10.9 carbohydrate-to-lipid ratio exhibited the lowest nitrogen retention and energy retention values. With the diet carbohydrate-to-lipid ratios decreasing, hepatosomatic index values were reduced significantly (P < 0.001), while the intraperitoneal fat index values showed an inverse trend. Whole-body protein content was reduced with the decrease in dietary carbohydrate-to-lipid ratios, whereas whole-body lipid content increased significantly with decreasing dietary carbohydrate-to-lipid ratios (P < 0.001) while the whole-body moisture content showed a reverse trend. Additionally, liver lipid content increased with the decrease in dietary carbohydrate-tolipid ratios, while contrasting results were found in liver glycogen content. The results of this study suggest that the suitable dietary carbohydrate-to-lipid ratio for Orange-spotted Grouper is 0.5 in the isonitrogenous (45% crude protein) and isoenergetic diets, and this species is better adapted to utilizing lipids rather than carbohydrates.

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Effect of dietary lipid level on growth performance, feed utilization and body composition by juvenile red spotted grouper (Epinephelus akaara)

Cited by 31 publications

References 33 publications

Effects of dietary protein and lipid levels with different protein-to-energy ratios on growth performance, feed utilization and body composition of juvenile red-spotted grouper,Epinephelus akaara

Effects of dietary protein and lipid levels with different protein-to-energy ratios on growth performance, feed utilization and body composition of juvenile red-spotted grouper,Epinephelus akaara

Effects of dietary protein levels on the growth, body composition, serum biochemistry and digestive enzyme activity in Chinese rice field eel ( Monopterus albus ) fingerlings

Effects of Dietary Carbohydrate‐to‐Lipid Ratios on Growth and Body Composition of Orange‐spotted Grouper Epinephelus coioides

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