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30. Iridovirosis.

Author

Chou, Hsin-Yiu, primary, Kondo, Hidehiro, additional, and Qin, Qi-Wei, additional

Published
2020
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34. The Extract from Aerial Part of Scutellaria Baicalensis Regulates Gut Microbiota in Rabbit Fish: Replacement of Antibiotic Fighting against Pathogenic Bacteria

Author

Xia, Yiteng, Cheng, Hok Chi, Wang, Huai You, Zhang, Hoi Lam, Lin, Shengying, Dong, Ting Xia, Duan, Ran, Qin, Qi-Wei, Wang, Wen-Xiong, Tsim, Karl Wah Keung, Xia, Yiteng, Cheng, Hok Chi, Wang, Huai You, Zhang, Hoi Lam, Lin, Shengying, Dong, Ting Xia, Duan, Ran, Qin, Qi-Wei, Wang, Wen-Xiong, and Tsim, Karl Wah Keung

Abstract

The root of Scutellaria baicalensis is being used as herbal medicine, while its stem and leaf (aerial part) are considered as waste. The extract of aerial part of S. baicalensis, named as SBA here, has been shown to replace antibiotics in farming of Siganus fuscescens (rabbit fish), as to fight against marine pathogenic bacteria. To support the usage of SBA as feeding for aquaculture, the gut microbiota, after intake of the herbal extract, was determined. Here, the extract of SBA was mixed into the feeding of S. fuscescens that was cultured with a mixture of pathogenic bacteria. After 2 days of feeding, the gut content of fish was collected for the extraction and sequenced of 16S rDNA. The results indicated that the intake of SBA extract showed strong anti-bacterial effect, which inhibited the growth of pathogenic bacteria, i.e., Deltaproteobacteria and Fusobacteria. In contrast to antibiotic (enrofloxacin), the growth of probiotics, e.g., Erysipelotrichia, was promoted after intake of SBA. Our investigations showed the anti-bacterial effect of SBA extract in vivo, as well as its potential effect to promote the uptake of nutrients. The superiority of using this herbal extract in comparing to antibiotic was illustrated here, and which further suggested the possible development of recycling the waste product of S. baicalensis in fish aquaculture.

Published
2023

39. The inclusion of extract from aerial part of Scutellaria baicalensis in feeding of pearl gentian grouper (Epinephelus fuscoguttatus♀ × Epinephelus lanceo-latus♂) promotes growth and immunity

Author

Xia, Yiteng, Wu, Qiyun, Cheng, Hok Chi, Dong, Ting Xia Tina, Qin, Qi-Wei, Wang, Wenxiong, Tsim, Karl Wah Keung, Xia, Yiteng, Wu, Qiyun, Cheng, Hok Chi, Dong, Ting Xia Tina, Qin, Qi-Wei, Wang, Wenxiong, and Tsim, Karl Wah Keung

Abstract

The root of Scutellaria baicalensis (Scutellaria Radix) has been used as herbal medicine for years in China; however, its stem and leaf (aerial part) are considered as waste. The water extract of aerial part of S. baicalensis, named as SBA, having anti-microbial property has been applied in fish aquaculture. To extend the usage of SBA in fish feeding, SBA was employed to feed pearl gentian grouper (a hybrid of Epinephelus fuscoguttatus♀ × Epinephelus lanceolatus♂), and subsequently the total fish output, the levels of digestive enzymes and inflammatory cytokines were determined. Feeding the fish with different doses of SBA for two months, the body length and weight were significantly increased by 5%–10%. In parallel, the expressions of alkaline phosphatase and growth-related factors in bone, liver and muscle of SBA-fed fish were doubled, which could account the growth promoting effect of SBA. Besides, the activity of digestive enzyme, lipase, and the expressions of anti-inflammatory cytokines were markedly stimulated by 2–3 times under the feeding of 3% SBA-containing diet. The results indicated the growth promoting activity of SBA in culture of pearl gentian grouper, as well as the effect of SBA in strengthening the immunity. These beneficial effects of SBA feeding can increase the total yield of pearl gentian grouper in aquaculture. Thus, the re-cycle of waste products during the farming of S. baicalensis herb in serving as fish feeding should be encouraged. © 2022

Published
2022

48. Characterization of a macrophagic-like cell line derived from rabbit fish (Siganus fuscescens): An illustration of anti-inflammatory responses of the herbal extract of Scutellaria baicalensis

Author

Xia, Yiteng, Cheng, Hok Chi, Xia, Yingjie, Wu, Qiyun, Zhang, Hoi Lam, Lin, Shengying, Dong, Tingxia, Qin, Qi-Wei, Wang, Wenxiong, Tsim, Karl Wah Keung, Xia, Yiteng, Cheng, Hok Chi, Xia, Yingjie, Wu, Qiyun, Zhang, Hoi Lam, Lin, Shengying, Dong, Tingxia, Qin, Qi-Wei, Wang, Wenxiong, and Tsim, Karl Wah Keung

Published
2021

50. Feeding containing the aerial part of Scutellaria baicalensis promotes the growth and nutritive value of rabbit fish Siganus fuscescens

Author

Xia, Yiteng, Cheng, Hok Chi, Zheng, Zhongyu, Wu, Qiyun, Dong, Ting Xia, Duan, Ran, Qin, Qi Wei, Wang, Wenxiong, Tsim, Karl Wah Keung, Xia, Yiteng, Cheng, Hok Chi, Zheng, Zhongyu, Wu, Qiyun, Dong, Ting Xia, Duan, Ran, Qin, Qi Wei, Wang, Wenxiong, and Tsim, Karl Wah Keung

Abstract

The root of Scutellaria baicalensis (Scutellaria Radix) has been used as herbal medicine for years, while its stem and leaf (aerial part) are considered as waste. The water extract from the aerial part of S. baicalensis (named as SBA) being included in the feeding of Siganus fuscescens (grey rabbit fish) has been shown to replace antibiotics in aquaculture with excellent outcome. To strengthen the usage of SBA in fish feeding, the total fish output and its nutritive value were determined here. Feeding the fishes with different doses of SBA for a month, the body length and weight were significantly increased after intake of standard feed containing 1% SBA. In parallel, the expressions of alkaline phosphatase and growth-related factors in bone, liver, and muscle of 1% SBA-fed fishes were markedly increased, suggesting the beneficial effects of SBA. The composition of amino acid and fatty acid in fish muscle, after intaking 1% SBA-containing feed, was altered. In SBA-fed fish muscle, the amounts of threonine and methionine were increased, while the amount of leucine was decreased, as compared with control group. The amounts of fatty acids, including docosahexaenoic acid, phosphatidylcholine, and phosphatidylethanolamine, were increased in the 1% SBA-fed fish, while the amounts of triglycerides were decreased. The results indicated the growth-promoting activity of SBA in an in vivo culture of S. fuscescens, as well as to increase the nutritive values of the muscle. Thus, the re-cycle of waste products during the farming of S. baicalensis herb in serving as fish feeding should be encouraged. © 2021 The Authors. Food Science & Nutrition published by Wiley Periodicals LLC.

Published
2021

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