Impact of fish density on water quality and physiological response of golden pompano (Trachinotus ovatus) flingerlings during transportation

Hong, Jiawei; Xu, Chen; Sixun, Liu; Fu, Zhengyi; Han, Mingyang; Wang, Yifu; Gu, Zhenxin; Ma, Zhenhua

doi:10.1016/j.aquaculture.2019.04.040

Cited by 40 publications

(31 citation statements)

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“…Fish welfare is starting to become a concern in China, as evidenced by the appearance of reviews on that topic since 2009 [ 25 , 28 , 29 ]. In China, current research on live fish transport published in English focuses on waterless transport techniques [ 11 , 16 , 30 ], the efficacy of fish anesthetics [ 31 , 32 ], transport density [ 30 , 33 ], and physiological stress responses of transported fish [ 7 , 34 ]. Although several reviews on fish transport [ 19 , 35 , 36 ] have also been written in Chinese, their contents are very similar to each other and do not connect to welfare issues.…”

Section: Introductionmentioning

confidence: 99%

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Knowledge of, and Attitudes towards, Live Fish Transport among Aquaculture Industry Stakeholders in China: A Qualitative Study

Yang

Phillips

Shao

et al. 2021

Animals

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China is the largest food fish producer in the world. Chinese consumers normally purchase fish that are still alive to ensure freshness. Therefore, the live transport of fish is important in China’s aquaculture, although it carries potential risks for animal welfare. This study investigated the attitudes and knowledge of stakeholders within Chinese aquaculture towards the live transport and welfare of fish. Semi-structured interviews were conducted with 12 participants who were involved with the aquaculture industry in China. Most participants self-rated their transport-related knowledge as moderate and had some understanding of animal welfare, although this term was generally considered only relevant to terrestrial animals. Participants’ responses indicated that the live transport of fish occurs frequently in China, generally using sealed tanks, plastic bags, and foam boxes, in purpose-built vehicles. Seasonal changes, such as changes in ambient and water temperature, are considered to be important contributors to successful live transport, as well as sufficient oxygen supplies and stocking density. The use of anesthetics was not commonly reported, particularly in food fish, and fish capture is predominantly by conventional dipnets. The health status of transported fish is determined mostly by morphology (body injury, body or eye color, and fin condition), as well as vigor and swimming ability. Our results indicate that live transport poses a number of welfare risks to fish but that participants in the process associated welfare concerns more with terrestrial animals, not fish.

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Section: Introductionmentioning

confidence: 99%

“…29. What is the average mortality rate of fish during or after live transport?30. What do you think are the main causes of fish death during live transport?…”

mentioning

confidence: 99%

Knowledge of, and Attitudes towards, Live Fish Transport among Aquaculture Industry Stakeholders in China: A Qualitative Study

Yang

Phillips

Shao

et al. 2021

Animals

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“…The activity of antioxidant enzymes and immune-related enzymes can be affected by external factors (Kolayli and Keha 1999;Mila-Kierzenkowska et al 2005;Saurabh and Sahoo 2008). The SOD, POD and CAT are key enzymes reflecting the antioxidant capacity as they protect cells from damage by excessive reactive oxygen species (ROS), including −OH, O 2− and H 2 O 2 (Olsvik et al 2005;Hong et al 2019).…”

Section: Resultsmentioning

confidence: 99%

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

Han

Zhou

Qin

et al. 2020

Journal of Applied Animal Research

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“…Expect for these two water quality parameters, there were still some other parameters could cause damage to fish transported, pH and ammonia nitrogen concentration especially. They are always characterized by increasing in NH 4 +‐N concentration and decreasing in pH after transportation (Gatica et al, 2008; Hong, Chen, et al, 2019; Flávia DF Sampaio & Freire, 2016; Serra et al, 2011). Same results were obtained in duration and density experiments.…”

Section: Discussionmentioning

confidence: 99%

Effects of transporting stress on the immune responses of Asian seabass Lates calcarifer fry

Hong

Zhou

et al. 2020

Aquaculture Research

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Transportation is of high risk and cannot be avoided during the productive practice of Lates calcarifer fry. To achieve an optimal transporting protocol, the changes of physico‐chemical indexes and immune genes expression of fry after transportation were evaluated. The fish were simulated transported at the density of 7 kg/m3 for different time (T1 = 4 h, T2 = 8 h, T3 = 12 h, T4 = 16 h, T5 = 20 h, T6 = 24 h) and at three densities (D1 = 14 kg/m3, D2 = 21 kg/m3, D3 = 28 kg/m3) for 24 h. With the intensive stress, a decrease in pH and an increase in NH4+‐N were observed. At transporting density experiment, the cortisol of every group except T3 had a significant difference with the control. ALT, AST and ACP activity were all close to a rise first and then decline trend. IL‐8, TNF and IFN‐γ1 were activated to promote inflammation at different degrees of transportation pressure, while the tendency of L10 and TGF‐β1 was similar. CRP also had no significant increase under different transporting durations stress. HSP70 undertook main repair work as expression level of it increased gradually. Complement did not reach its release standard at duration experiment expect for T3 group of C3. However, density experiment had no obviously positive effects on physico‐chemical indexes and the relative expression of immune genes. The results indicated that when the transporting time exceeded 8 h at the density of 7 kg/m3, significant immune response started happening to fish. The transporting density stress has stimulated the fries but the immune response was still under the inhibited state owing to the ammonia toxicity reduction by much lower pH.

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Impact of fish density on water quality and physiological response of golden pompano (Trachinotus ovatus) flingerlings during transportation

Cited by 40 publications

References 46 publications

Knowledge of, and Attitudes towards, Live Fish Transport among Aquaculture Industry Stakeholders in China: A Qualitative Study

Knowledge of, and Attitudes towards, Live Fish Transport among Aquaculture Industry Stakeholders in China: A Qualitative Study

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

Effects of transporting stress on the immune responses of Asian seabass Lates calcarifer fry

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