Dietary protein requirement of juvenile bluegill sunfish (Lepomis macrochirus)

Yang, Min; Wang, Jiteng; Han, Tao; Yang, Yunxia; Li, Xinyu; Jiang, Yudong

doi:10.1016/j.aquaculture.2016.03.044

Cited by 35 publications

(37 citation statements)

References 35 publications

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“…As previously discussed, excess dietary protein beyond requirement is directed towards energy production (Yang et al, 2016). The trends in protein use observed in this study are similar to several previously studies for other carnivorous fish (Abbas, Siddiqui, & Jamil, 2011;K.…”

Section: Resultssupporting

confidence: 80%

“…These results lead us to propose studies on liver metabolism in pirarucu. Liver plays an important function in maintaining body composition in fish, but there is some variation of information in the literature on fish liver function subjected to dietary protein changes (Kim & Lee, 2009;Yang et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, it is known that the energy-to-protein ratio plays an important role in fish nutrition, which can affect growth performance and feed efficiency. According to Yang et al (2016) and NRC (2011), expressing protein requirement based on the protein-to-energy ratio is more rational than the dietary crude "protein requirement" expression. Using this expression, pirarucu in our study fed a digestible energy/digestible protein ratio (E/P) of 35.8 kJ kg -1 showed optimum performance in weight gain and feed conversion rate.…”

Section: Resultsmentioning

confidence: 99%

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Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Júnior¹,

Santos²,

Allaman³

et al. 2017

JAS

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Pirarucu (Arapaima gigas) is a fast-growing, carnivorous species reared commercially in Amazonian countries as Brazil. Lack of a nutritionally balanced and affordable diet is a major constraint in pirarucu aquaculture, and our investigation sought to estimate the dietary protein requirement for this species. Four diets were formulated to contain increasing concentrations of digestible protein (32, 35, 38, and 41%) and fed to triplicate groups of juvenile pirarucu of around 2 kg for 18 weeks. As result, pirarucu showed no differences in feed intake, survival, or fillet yield. However, regression analysis revealed that weight gain (WG) values showed a general increasing trend with increasing dietary digestible protein (DP) level up to 36.7%. In addition, feed conversion rates were also improved with increase in dietary DP up to 36.4%. Fish fed diets containing 32 and 41% had poor feed conversion rates. Thel protein retention rate (PRR) and protein efficiency index (PER) decreased as levels of DP increased. The optimal dietary protein content for juvenile pirarucu between 1.98 and 4 kg of BW is about 36% of digestible protein on diet.

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Júnior¹,

Santos²,

Allaman³

et al. 2017

JAS

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“…The SGR significantly elevated with increasing dietary CP level to 50.71%, and there was no significant change thereafter. Several studies on different fish species have reported similar growth responses, such as Anguilla rostrata (Tibbetts, Lall, & Anderson, ), Diplodus sargus (Sá, Pousão‐Ferreira, & Oliva‐Teles, ) and Lepomis macrochirus (Yang et al, ). In addition, feed utilization of fish was improved with dietary CP level increasing.…”

Section: Discussionmentioning

confidence: 94%

“…Conversely, insufficient protein in the diet can lead to a reduction or cessation of growth (Wilson, ; Ye, Wu, Sun, & Wang, ). Therefore, the protein requirement should be carefully determined for a new cultured species (Yang et al, ), especially for carnivorous fish, which require higher levels of protein to sustain growth.…”

Section: Introductionmentioning

confidence: 99%

Dietary protein requirement of juvenile kelp grouper ( Epinephelus moara )

Han

et al. 2019

Aquac Res

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Dietary protein requirement of juvenile kelp grouper Epinephelus moara was investigated through a feeding trial. Experimental diets with graded crude protein (CP) levels (33.01%, 38.54%, 45.21%, 50.71%, 56.10% and 63.09% of dry matter respectively) were formulated. Six triplicate groups of fish (20 individuals per replicate with initial mean weight 6.00 g) were fed with each diet for 8 weeks. Best growth performance of fish was detected in 56.10% CP diet. The specific growth rate (SGR) significantly elevated with increasing dietary CP level to 50.71%, but there was no significant difference thereafter (p < .05). The feed conversion ratio (FCR) decreased significantly with dietary CP levels from 33.01% to 56.10% (p < .05). Glucose (GLU) and total protein (TP) concentrations in plasma had an increasing trend with dietary protein increasing. In the 33.01% CP group, plasma triglyceride (TG) content was significantly higher (1.67 mmol/L) than that in other dietary treatments (0.65–1.14 mmol/L). The lowest alanine transaminase (ALT) activity was observed in the 56.10% CP group (163.16 U/L). Crude lipid content in the muscle and liver was significantly elevated with increasing dietary protein levels (p < .05). The glycogen content in the liver decreased significantly as CP levels increased (p < .05). The fish fed diet with higher CP level (56.10% and 63.09%) had significantly higher energy retention (ER) and lipid retention (LR) than other treatments. Based on the broken‐line regression analysis of SGR and FCR, the optimal dietary protein requirement for juvenile kelp grouper is 54.61%–56.22%.

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Protein Requirement—‘Only Meat Makes You Strong’

Steinberg

2022

Aquatic Animal Nutrition

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Dietary protein requirement of juvenile bluegill sunfish (Lepomis macrochirus)

Cited by 35 publications

References 35 publications

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Digestible Protein Requirement of Pirarucu Juveniles (Arapaima gigas) Reared in Outdoor Aquaculture

Dietary protein requirement of juvenile kelp grouper ( Epinephelus moara )

Protein Requirement—‘Only Meat Makes You Strong’

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