Impacts of different feeding modes on the gonadal development, total edible yield, and nutritional composition of male Chinese mitten crab (Eriocheir sinensis)

Pan, Jie; Wu, Renfu; Wu, Xugan; Long, Xiaowen; Wang, Xichang; Cheng, Yongxu

doi:10.1016/j.aaf.2020.01.004

Cited by 11 publications

(6 citation statements)

References 26 publications

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“…Normally, E. sinensis are cultured from larvae to button-sized seeds (juvenile culture stage) from June to November in ponds, reservoirs, tanks or rice fields and then grow to market size crabs from March to October (grow-out stage) in the next year (Li et al, 2007). During the juvenile culture stage, the E. sinensis were traditionally fed on soybeans, wheat, corn, freshwater snails and frozen trash fish (Pan et al, 2020;Zhao et al, 2016). However, these conventional foods generally have several disadvantages, such as unbalanced nutrition, high cost, unstable supply, deterioration of water quality and high labour burden, which are not suitable for the large-scale production of seed crabs (Pan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…During the juvenile culture stage, the E. sinensis were traditionally fed on soybeans, wheat, corn, freshwater snails and frozen trash fish (Pan et al, 2020;Zhao et al, 2016). However, these conventional foods generally have several disadvantages, such as unbalanced nutrition, high cost, unstable supply, deterioration of water quality and high labour burden, which are not suitable for the large-scale production of seed crabs (Pan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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An investigation on the effects of dietary protein level in juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: survival, growth performance, digestive enzyme activities, antioxidant capacity and body composition

Liu

Wen

et al. 2021

Aquaculture Research

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A 50‐day feeding experiment was conducted to investigate the effects of dietary protein level (26%, 34%, 43% and 52%) on the survival, growth performance, digestive enzyme activities, antioxidant capacity and body composition in the Chinese mitten crab (Eriocheir sinensis) reared at three salinities (0.5‰, 2‰ and 6‰). Survival rate (SR) showed a clearly decreasing tendency as the salinity elevated. The highest weight gain rate (WGR) was achieved in the treatment of 43% protein at the salinity of 0.5‰ and 2‰, and 26% protein at the salinity of 6‰ (p > 0.05). However, there was no significant interactive effect between dietary protein level and salinity on the SR and WGR of E. sinensis (p > 0.05). As salinity increased, the amylase activity and lipid deposition increased but the Na+/K+‐ATPase activity decreased. The MDA content of E. sinensis was increased at the salinity of 2‰ than the other two salinities by low or moderate dietary protein (26–43% dry diet), but was significantly decreased by high protein (52% dry diet). Correspondingly, the activities of GSH‐Px were increased at the relatively higher protein (43–52% dry diet). The significant interactive effect was only obtained between dietary protein level and salinity on the activities of CAT, GSH‐Px and MDA content of E. sinensis. Dietary protein level had a more obvious positive effects on the EAA deposition at the salinity of 2‰ and 6‰, with the highest contents of essential amino acids (EAAs) achieved by 43% dietary protein. In conclusion, the relatively higher protein could benefit the E. sinensis by inhibiting the lipid peroxidation and increasing the deposition of EAAs at the salinity of 2‰. The elevated activities of amylase could account for the low protein (26%) requirement for E. sinensis reared at the salinity of 6‰.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An investigation on the effects of dietary protein level in juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: survival, growth performance, digestive enzyme activities, antioxidant capacity and body composition

Liu

Wen

et al. 2021

Aquaculture Research

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“…In 2019, the aquaculture yield of E. sinensis has amounted to 778,682 t (China Fishery Statistical Yearbook, 2020). The E. sinensis juveniles were traditionally fed on the natural foods such as soybeans, wheat, corn, freshwater snails and frozen trash fish (Pan et al, 2020). However, this feeding strategy is being obsoleted due to the high cost, unbalanced nutrition profile, unstable supply and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Substitution of fish meal with soybean meal for juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: Effects on survival, growth, antioxidant capacity and body composition

Liu

Wen

Man

et al. 2021

Aquaculture Research

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A 60-day feeding experiment was conducted to evaluate the survival, growth, antioxidant capacity and body composition of the juvenile Chinese mitten crab (Eriocheir sinensis) reared at three salinities (0.5‰, 2‰ and 6‰) in response to the different substitution levels (0%, 24%, 39%, 57% and 100%) of fish meal (FM) by soybean meal (SBM). The five diets were named as S0, S24, S39, S57 and S100 respectively. Results showed that survival rate (SR) was only significantly affected by the substitution level at the salinity of 0.5‰, with significantly higher SR observed in S39 (p < 0.05). At the salinity of 0.5‰ and 2‰, the significantly higher weight gain rate (WGR) was observed in S39 and S57 respectively (p < 0.05). At the salinity of 6‰, WGR was significantly improved by partial or complete substitution of FM by SBM. At each salinity, the highest GSH-Px activity and lowest MDA content were observed in the treatments of S57, which were comparable to that fed S0. At the salinity of 6‰, the activities of SOD and CAT were significantly decreased in S100 than that in the other treatments (p < 0.05). The proline content significantly increased as the substitution level increased at the salinity of 2‰. At the salinity of 6‰, the contents of proline, glutamine, cysteine, methionine and lysine, first significantly increased and then decreased (p < 0.05), with the highest value observed in the treatment of S39 or S57.These results indicated that the optimal substitution level of FM by SBM was estimated to be 39% and 57% in the diets of E. sinensis at the salinity of 0.5‰ and 2‰ respectively. Although the FM can be completely replaced by SBM without negatively affecting the survival and growth performance at the salinity of 6‰, the antioxidant capacity was reduced to a large extent.

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“…Such results indicated that formulated diets were beneficial to the amino acid synthesis and protein deposition in female crabs. This may be due to the fact that the formulated diets contain animal and plant protein, such as fishmeal, soybean meal, rapeseed meal and squid meal, and the amino acid composition is more balanced than that of traditional diets, so it is conducive for amino acid absorption and protein synthesis (Pan et al., 2020). The levels of oxoglutaric acid, malic acid and pyruvic acid in the hepatopancreas involved in the TCA cycle were significantly down‐regulated in the FD mode, indicating that the energy metabolism level of female crabs in FD mode was significantly lower, which was potentially beneficial for energy accumulation in the tissue.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, past research also supports our metabolomics results. For example, the FD mode had the lowest feed efficiency ratio (FD: 2.64; ND: 8.44; TD: 4.74) and the highest proportion of dominant size (75–100 g) female crabs (FD: 57.39%; ND: 52.71%; TD: 52.55%) compared with ND and TD modes (Pan et al., 2016); the muscular total amino acids contents of female crab from FD were 7.48% and 6.05% higher than ND and TD, respectively (Pan et al., 2020, unpublished manuscript).…”

Section: Discussionmentioning

confidence: 99%

Key metabolic and enzymatic adaptations underlie the benefits of formulated diets in the adult female Chinese mitten crabEriocheir sinensis

et al. 2020

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Natural and traditional diets have been gradually replaced with formulated diets for the Chinese mitten crab Eriocheir sinensis culture, but it is unclear what effects different feeding modes have on digestive physiology and metabolism of E. sinensis. This study investigated the effects of three feeding modes, formulated diets (FD), natural diets (ND, trash fish and freshwater snails) and traditional diets (TD, soybean, wheat, broad bean and corn) on digestive enzyme activity, physiological indices and metabolomics of adult female E. sinensis. The ND had the highest activities of trypsin and lipase in the hepatopancreas, while the highest amylase activity was detected in TD. The highest content of hepatopancreas triglyceride was detected in FD, while the highest levels of lipoprotein lipase, hepatic lipase, lactic acid, malonaldehyde, acid phosphatase and alkaline phosphatase in the hepatopancreas, as well as the total cholesterol, high‐density lipoprotein cholesterol, low‐density lipoprotein cholesterol and γ‐glutamyltransferase in serum were detected in ND. The TD had the highest content of glucose and uric acid in the hepatopancreas as well as the free cholesterol, lactic acid, aspartate aminotransferase and alanine aminotransferase in the serum. The metabolomics showed that most differential metabolites involved in amino acid anabolism in serum and hepatopancreas were significantly up‐regulated in FD. The metabolites involved in energy metabolism and gluconeogenesis in the hepatopancreas were significantly down‐regulated in FD. These results suggested that feeding with formulated diets promotes amino acid synthesis and reduces energy metabolism, which leads to more protein and glucose deposition in tissue.

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Impacts of different feeding modes on the gonadal development, total edible yield, and nutritional composition of male Chinese mitten crab (Eriocheir sinensis)

Cited by 11 publications

References 26 publications

An investigation on the effects of dietary protein level in juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: survival, growth performance, digestive enzyme activities, antioxidant capacity and body composition

An investigation on the effects of dietary protein level in juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: survival, growth performance, digestive enzyme activities, antioxidant capacity and body composition

Substitution of fish meal with soybean meal for juvenile Chinese mitten crab ( Eriocheir sinensis ) reared at three salinities: Effects on survival, growth, antioxidant capacity and body composition

Key metabolic and enzymatic adaptations underlie the benefits of formulated diets in the adult female Chinese mitten crabEriocheir sinensis

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