Effects of live and artificial feeds on the growth, digestion, immunity and intestinal microflora of mandarin fish hybrid (<i>Siniperca chuatsi</i>♀ × <i>Siniperca scherzeri</i>♂)

Li, Yan; Li, Jianzhong; Lu, Jintian; Li, Zhu; Shi, Shunchang; Liu, Zhijun

doi:10.1111/are.13273

Cited by 34 publications

(19 citation statements)

References 15 publications

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“…This also confirmed that the antioxidant capacity of the fish was related to the type of diet (Li et al . ). Overall, the activities of antioxidant enzymes in the intestine of common carp were higher in the mixed diet group than in the other groups.…”

Section: Discussionmentioning

confidence: 97%

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Effects of different diets on the intestinal microbiota and immunity of common carp ( Cyprinus carpio )

Yang

Luo

et al. 2019

J Appl Microbiol

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Aims: An 8-week trial was performed to evaluate the differences in the intestinal microbiota and immune function of common carp (Cyprinus carpio)fed different diets. Methods and Results: The fish (initial weight 492Á6 AE 30 g, n = 270) were randomly divided into three groups with three replicates and were fed earthworms (group A), earthworms + duckweed (group M) or duckweed (group P) respectively. The diversity and dominant microbiota of the intestinal bacteria were detected by denaturing gradient gel electrophoresis, and the abundance of dominant bacteria was quantified by qPCR. Additionally, the activities of some nonspecific immune enzymes and antioxidant enzymes were determined. The results showed that higher diversity and abundance of intestinal microbiota were observed in group M and group P (P < 0Á05). Based on the intestinal microbiota, Cetobacterium was only detected in the intestines of common carp in group A, and Bacillus was identified in groups M and P. Additionally, a higher abundance of Bacteroidetes and Firmicutes was also found in the intestine in group P than in group A (P < 0Á05). Interestingly, the higher activities of immune enzymes were detected in intestine of common carp in group M, such as acid phosphatase, phosphatase (AKP), lysozyme, total antioxidant capacity, superoxide dismutase, catalase, glutathione peroxidase. In addition, the lower level of metabolites were also detected, such as nitric oxide and malondialdehyde. Conclusions: Our results indicate that the intestinal microbiota and intestinal immunity of common carp were affected by diet. Meanwhile, the results show that a mixed diet can promote and improve the immune function of the omnivorous carp intestine, which suggests that paddy fields might be more suitable for the intestinal health and animal welfare of omnivorous fishes because they contain plant and animal diets. Significance and Impact of the Study: As an ecological aquaculture strategy, the rice-fish mode has attracted attention among farmers, researchers and even consumers, especially for the cultivation of common carp in paddy fields. In paddy fields, fish can eat plant-and animal-based diets. However, it is not clear whether common carp feeding on a mixed diet in paddy fields have better intestinal health. This experiment is one of only a few studies performed from the perspective of intestinal micro-organisms and immunity to successfully study the effects of different natural diets on adult common carp. This study also provides a theoretical basis for healthy breeding of common carp in paddy fields.

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Section: Discussionmentioning

confidence: 97%

“…) and Siniperca chuatsi (Li et al . ). Because animal diet contains a higher level of protein, which is more benefit to the digestion and absorption of carnivorous fish.…”

Section: Discussionmentioning

confidence: 97%

Effects of different diets on the intestinal microbiota and immunity of common carp ( Cyprinus carpio )

Yang

Luo

et al. 2019

J Appl Microbiol

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“…The moist feed strands were then chopped into pellets of a desired length (approximately 15 to 18 mm), dried on wire racks at 25°C in a forced air oven overnight, and kept frozen at − 20°C until used. A pilot study in our laboratory has shown that the size, shape, and texture of the feed pellets play an important role in the acceptance of artificial diets by mandarin fish which is well known for its very unique food preference (Liang et al 1998;Li et al 2017). The fish was found to be most attracted to the 15 to 18-mm-long moist pellets, which contained more than 30% moisture.…”

Section: Experimental Dietsmentioning

confidence: 99%

Total replacement of dietary fish oil with alternative lipid sources in a practical diet for mandarin fish, Siniperca scherzeri, juveniles

et al. 2019

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A 12-week feeding trial was designed to evaluate the effect of total replacement of fish oil (FO) with terrestrial alternative oils on growth, feed utilization, body composition, hematological parameters, and fillet fatty acid profile of mandarin fish juveniles. Four iso-nitrogenous (56% crude protein) and iso-lipidic (13% crude lipid) practical diets were formulated. A control diet contained 6% FO and three other experimental diets were prepared by replacing FO with linseed oil, soybean oil, and lard (designed as FO, LO, SO, and lard, respectively). Each diet was randomly allocated to triplicate groups of 25 fish (1.8 ± 0.03 g/fish) in a circular tank. Complete replacement of FO by three tested alternative oils had no remarkable impact on growth performance, feed utilization efficiency, and morphological and hematological parameters of juvenile mandarin fish. However, daily feed intake was found to be significantly higher for fish fed the SO diet compared with those fed the FO and LO diets. Fish fed LO and SO diets exhibited significantly higher levels of the whole body lipid compared to fish fed diet containing FO. Fillet fatty acid composition reflected dietary fatty acid profile. The highest level of α-linolenic acid, linoleic acid, and oleic acid was observed in fish fillet fed LO, SO, and lard, respectively. Although the eicosapentaenoic acid level of fish fillet fed diet FO was higher than other treatments, no significant difference was found in docosahexaenoic acid content among all dietary groups. The results of the present study clearly demonstrate that the complete replacement of FO in mandarin fish diets is achievable. These findings are useful in dietary formulation to reduce feed costs without compromising mandarin fish growth.

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“…PLoS ONE 15 (10): e0240308. https://doi.org/ 10.1371/journal.pone.0240308 has become a hotspot for the domestication of mandarin fish [1,2]. In the wild, mandarin fish feed on certain live fish, and this leads to some serious problems in the artificial culture of mandarin fish.…”

Section: Open Accessmentioning

confidence: 99%

“…The domestication of fish with high commercial values can reduce labour force and cost, and also accelerate the development of aquaculture industry. So far, several fish have been domesticated, including some carnivorous fish [1,26]; for example, Elopichthys bambusa [27], Epinephelus malabaricus [28], and Lateolabrax japonicus [29].…”

Section: Fish Domesticationmentioning

confidence: 99%

Transcriptome analysis of the growth performance of hybrid mandarin fish after food conversion

2020

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During recent years, China has become a hotspot for the domestication of mandarin fish, and this is of great commercial value. Although the food preference of domesticated mandarin fish has been studied, little is known about genes regulating their growth. We raised hybrid mandarin fish on artificial feed for 3 months, the results showed that the survival rate of hybrid mandarin fish was 60.00%. Their total length and body weight were 18.34 ±0.43 cm and 100.44 ±4.87 g. The absolute length and weight gain rates were 0.14 cm/d and 1.08 g/d, respectively. Finally, RNA sequencing (RNA-Seq) was performed to identify potential genes and pathways activated in response to growth performance. The transcriptome analysis generated 68, 197 transcripts and 45,871 unigenes. Among them, 1025 genes were up-regulated and 593 genes were down-regulated between the fast-and slow-growth fish. Finally, we obtained 32 differentially expressed genes, which were mainly related to fatty acid biosynthesis (e.g. FASN and ACACB), collecting duct acid secretion (e.g. ATP6E and KCC4), cell cycle (e.g. CDC20 and CCNB), and the insulin-like growth factor (IGF) system (IGFBP1). These pathways might be related to the growth of hybrid mandarin fish. In addition, more potential single nucleotide polymorphisms (SNPs) were detected in the fastgrowth fish than in the slow-growth fish. The results suggest that the interaction of metabolism and abundant alleles might determine the growth of hybrid mandarin fish after food conversion.

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Effects of live and artificial feeds on the growth, digestion, immunity and intestinal microflora of mandarin fish hybrid (Siniperca chuatsi♀ × Siniperca scherzeri♂)

Cited by 34 publications

References 15 publications

Effects of different diets on the intestinal microbiota and immunity of common carp ( Cyprinus carpio )

Effects of different diets on the intestinal microbiota and immunity of common carp ( Cyprinus carpio )

Total replacement of dietary fish oil with alternative lipid sources in a practical diet for mandarin fish, Siniperca scherzeri, juveniles

Transcriptome analysis of the growth performance of hybrid mandarin fish after food conversion

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