Comparison of digestive, immune and antioxidant enzyme activities of mackerel tuna (<i>Euthynnus affinis</i>) in the wild and under captivity

Han, Mingyang; Zhou, Shengjie; Qin, Jianguang; Ma, Zhenhua; Yu, Gang

doi:10.1080/09712119.2020.1844715

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…Determination of digestive enzyme activities in the three groups revealed that the lipase, amylase, and trypsin activities were significantly lower in the ranched group and the stocked group than in the farmed group, and the difference between the ranched group and the stocked group was not significant. Similar results were found in both indoor and wild tuna (Euthynnus affinis) [36]. Digestive enzymes are mainly secreted by the digestive glands and the digestive system plays a nutritional and digestive role; therefore, changes in digestive enzymes activity can affect the growth of fish [37].…”

Section: Discussionsupporting

confidence: 74%

Improvement of Flesh Quality of Farmed Silver Carp (Hypophthalmichthys molitrix) by Short-Term Stocked in Natural Water

Miao

Guo

Song

et al. 2023

Fishes

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To investigate the effects of different raising environments on the flesh quality, the study set up three groups of silver carp (Hypophthalmichthys molitrix), that is, pond-farmed; short-term stocked; and ranched, grown in a natural water ranch. This study compared the differences in muscle proximate composition and amino acid composition among three groups. The results showed that there was no difference between the ranched and the stocked groups in content of crude protein, ash, total amino acids (TAA), essential amino acids (EAA), and umami-flavored amino acids (UAA), with both groups being significantly higher than the farmed group. This shows that, in terms of flesh quality, the stocked group was closer to the ranched group and better than the farmed group after being stocked in natural water for 30 days. The results suggest that the flesh quality of farmed fish was improved by short-term stocking in natural water. To elucidate the reasons of flesh quality change in the stocked group, this study compared the food composition and intestinal digestive enzyme activity in three groups, demonstrating that the ranched and stocked groups had similar food composition, with their detritus proportion lower than that of the farmed group, consuming easily digestible phytoplankton diatoms rich in amino acids and fatty acids. No significant difference was seen between the ranched group and the stocked group, for which amylase, lipase, and trypsin activities were lower than that of the farmed group. It is hypothesized that differences in environmental and food composition resulted in lower digestive enzyme activity in the ranched group and the stocked group. In summary, the short-term stocking of farmed fish in a natural water ranch can effectively improve the nutrient content, quality and flavor, and promote value of fish products.

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Section: Discussionsupporting

confidence: 74%

Improvement of Flesh Quality of Farmed Silver Carp (Hypophthalmichthys molitrix) by Short-Term Stocked in Natural Water

Miao

Guo

Song

et al. 2023

Fishes

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“…Antioxidant enzymes such as SOD, CAT, POD, AKP, and GSH-Px play a crucial role in preventing cell damage caused by ROS. 24 SOD neutralizes the superoxide anion, while CAT transforms hydrogen peroxide into water and oxygen after the SOD reaction. GSH-Px reduces H 2 O 2 to H 2 O and lipid peroxides to their respective alcohols.…”

Section: Discussionmentioning

confidence: 99%

Growth and nutritional health of Pterophyllum scalare juveniles: Unleashing the benefits of feeding with Artemia sp. in aquariums

Mao,

Chen,

Lan

et al. 2023

Israeli Journal of Aquaculture - Bamidgeh

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Pterophyllum scalare is a popular ornamental fish species, but current rearing methods result in high mortality, low fertility, disease incidence, and slow growth in aquarium conditions. Research on co-feeding for ornamental fish at the juvenile or adult stage needs to be completed. This study implemented a “snacking” feeding strategy using Artemia sp. to evaluate changes in fish survival rate, growth performance, and enzyme activity related to digestion, antioxidants, and immunity in a recirculating aquaculture system. Two feeding strategies were tested: one group was fed a commercial diet plus Artemia sp. (0.1% of diet) as “snacking,” and another group was fed only the commercial diet as normal. “Snacking” with Artemia sp. enhanced fish’s survival and growth performance, with higher relative weight rate, standard length, and total length than the control group. Specific growth rates for weight, standard length, and total length were also more significant in the supplemented group compared to the control group. The activity of amylase, superoxide dismutase, and glutathione peroxidase was substantially higher in the supplemented group. Adding Artemia sp. as a supplement under a “snacking” feeding strategy to the control diet was beneficial for P. scalare juvenile rearing and can guide managing recirculating farming activities.

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Comparison of the Digestive Enzyme, Antioxidant Capacity, Immunity and Microbial Composition between Wild-Caught and Pond-Reared Megalopa Population of Chinese Mitten Crab Eriocheir Sinensis

Zhang,

Xiong,

Jiang

et al. 2024

Preprint

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Comparison of digestive, immune and antioxidant enzyme activities of mackerel tuna (Euthynnus affinis) in the wild and under captivity

Cited by 3 publications

References 24 publications

Improvement of Flesh Quality of Farmed Silver Carp (Hypophthalmichthys molitrix) by Short-Term Stocked in Natural Water

Improvement of Flesh Quality of Farmed Silver Carp (Hypophthalmichthys molitrix) by Short-Term Stocked in Natural Water

Growth and nutritional health of Pterophyllum scalare juveniles: Unleashing the benefits of feeding with Artemia sp. in aquariums

Comparison of the Digestive Enzyme, Antioxidant Capacity, Immunity and Microbial Composition between Wild-Caught and Pond-Reared Megalopa Population of Chinese Mitten Crab Eriocheir Sinensis

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