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2. COMPARISON OF GROWTH, GUT MICROBIOTA COMPOSITION, AND TASTE SENSORY PROFILE OF ABALONE (HALIOTIS DISCUS HANNAI) FED DIETS FORMULATED WITH HEAT-TREATED OR FERMENTED SEAWEED (SARGASSUM HORNERI) MEAL

Author

Hur, Sang-Woo, Cadangin, Josel, Lee, Seunghan, Moon, Ji-Sung, Jang, Won-Je, Nam, Taek-Jeong, and Choi, Youn-Hee

Subjects
Feed industry -- Growth, Microbiota (Symbiotic organisms) -- Growth, Body weight -- Growth, Fermentation, Sensors, Biological diversity -- Growth, Costs (Law), Company growth, Biological sciences, Zoology and wildlife conservation
Abstract

The supply of macroalgal feed materials for abalone aquaculture is threatened by increasing costs, limited availability. and the allocation of seaweed resources for other purposes. The use of biofouling Sargassum horneri (SH) as additional macroalgal biomass for abalone has been studied, albeit full inclusion is discouraged due to low utilization. This study applied heat treatment and fermentation to increase the nutritive value of SH meals for the aquaculture feed industry. Untreated (UN) as control, heat treated (HT, 121[degrees]C for 20 min), and fermented (FE, 10' CFU/mL each of Bacillus sp. SJ-10 and Bacillus sp. KRF-7) SH meal was fed to the abalone (11.60 [+ or -] 0.02 g body weight and 42.98 [+ or -] 0.53 mm shell length) for 8-wk growth trial. The results showed that there is no apparent difference in the growth performance (body weight and shell length morphometries) and survival of abalone given experimental diets (P > 0.05). The crude protein, lipid, and ash composition of edible abalone flesh were similarly unaffected (P > 0.05). The gut microbiota profile of abalone was analyzed through next-generation sequencing. The [alpha]-diversity indicators (microbial richness and abundance) were statistically similar (P > 0.05). and the [beta]-diversity of operational laxonomic units revealed short distances within samples and clustering among diet groups. The core phyla (Fusobacteria, Proteobaeteria. Tenericutes) and genera (Psychrilyohacter, Vibrio, Mycoplasma) known to inhabit the gut of abalone predominantly were likewise identilied irrespective of diets; however, there is a difference in their relative abundance. Genus Psychrilyohacter was relatively abundant in UN and FE compared with HT, whereas Vibrio and Mycoplasma had higher abundance in FE and HT-fed abalone, respectively. Taste sensory attributes were discriminated in the abalone meat using an electronic tongue. Principal component analysis of sensor scores revealed several overlapping points, resulting in a negative discrimination index (-184). which means no apparent difference in the general taste profile was detected. Furthermore, the taste screening matrix through radar mapping revealed slight intensity differences in the umami. saltiness, and sourness flavor. Overall, the methods used for heat treatment and fermentation procedures herein were ineffective in improving the nutritive value of seaweed meal for abalone. KEY WORDS: abalone, gulfweed. heat treatment, fermentation. Haliotis discus harmed, Sargassum horneri, INTRODUCTION The abalone (Haliotis spp.) is an ecologically and economically important marine gastropod mollusc worldwide. They are found in tropical and temperate regions, particularly in the low intertidaj zone of [...]

Published
2024
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18. Effects of Dietary Fish Meal Replacement with Alternative Protein Ingredients and Their Combinations on Growth Performance, Feed Utilization, Fillet Composition, and Biochemical Parameters of Red Seabream (Pagrus major)

Author

Gunathilaka, Buddhi E., Jeong, Seong-Mok, Cho, Min-Uk, Kim, Kang-Woong, Hur, Sang-Woo, Lee, Seunghan, You, Sang-Guan, and Lee, Sang-Min

Abstract

The experiment was conducted to evaluate alternative protein ingredients in a low-fish meal (FM) diet for red seabream (Pagrus major). Twelve experimental diets were formulated. Control diet (CON) was designed to contain 60% FM. Other experimental diets were formulated by replacing 50% of FM from the CON with soy protein concentrate (SPC), corn gluten (CG), meat meal (MM), and/or chicken byproduct meal (CBM). Four diets were designed including one of SPC, CG, MM, or CBM as FM replacer and designated as SPC, CG, MM, and CBM. Six other diets were formulated by adding two ingredients as SPC and CG, SPC and MM, SPC and CBM, CG and MM, CG and CBM, or MM and CBM, and designated as SCG, SMM, SCM, CMM, CCM, and MCM, respectively. The 12th diet (MIX) was formulated by including SPC, CGM, MM, and CBM. Triplicate fish groups (50.2 ± 0.1 g) were hand-fed for 12 weeks. Weight gain (WG) of fish was significantly improved by MM and MCM diets compared to CG, SCG, CMM, and CCM diets. WG of CON, SPC, CM, SMM, SCM, and MIX groups were comparable with MM and MCM groups. The lowest WG was observed in CG and CMM groups. Feed efficiency (FE) was significantly higher in MM group compared to SPC, CG, SGC, and CMC groups. FE of MCM group was significantly higher than CG and SCG groups. Fillet linolenic acid (C18:2n–6) level in CG group was significantly higher than CON, MM, CM, SCM, CCM, and MCM groups. Serum lysozyme activity was significantly higher in MCM and MIX groups. Therefore, a high level of dietary CG reduces the growth performance and feed utilization of red seabream. A mixture of MM and CBM seems to be more efficient in replacing FM from red seabream diet.

Published
2023
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19. Comparison of growth performance, non-specific immunity, and intestinal microbiota of olive flounder (Paralichthys olivaceus) fed with extruded pellet and moist pellet diets under field conditions in South Korea

Author

Jang, Won Je, primary, Hasan, Md. Tawheed, additional, Choi, Wonsuk, additional, Hwang, Soyeon, additional, Lee, Yein, additional, Hur, Sang Woo, additional, Lee, Seunghan, additional, Lee, Bong-Joo, additional, Choi, Youn Hee, additional, and Lee, Jong Min, additional

Published
2022
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20. Effects of Decreasing Fishmeal as Main Source of Protein on Growth, Digestive Physiology, and Gut Microbiota of Olive Flounder (Paralichthys olivaceus)

Author

Seo, Bong-Seung, primary, Park, Su-Jin, additional, Hwang, So-Yeon, additional, Lee, Ye-In, additional, Lee, Seung-Han, additional, Hur, Sang-Woo, additional, Lee, Kyeong-Jun, additional, Nam, Taek-Jeong, additional, Song, Jin-Woo, additional, Kim, Jae-Sig, additional, Jang, Won-Je, additional, and Choi, Youn-Hee, additional

Published
2022
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21. Expression of insulin‐like growth factor genes in olive flounder, Paralichthys olivaceus , fed a diet with partial replacement of dietary fish meal

Author

Moon, Ji‐Sung, primary, Oh, Dae Han, additional, Park, Su‐Jin, additional, Seo, Jin‐Song, additional, Kim, Dong‐Uk, additional, Moon, Seong‐Hwan, additional, Park, Hung Sik, additional, Lim, Sang‐Gu, additional, Lee, Bong‐Joo, additional, Hur, Sang‐Woo, additional, Lee, Kyeong‐Jun, additional, Nam, Taek Jeong, additional, and Choi, Youn Hee, additional

Published
2022
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22. Dietary Supplementation of Bacillus sp. PM8313 with β-glucan Modulates the Intestinal Microbiota of Red Sea Bream (Pagrus major) to Increase Growth, Immunity, and Disease Resistance

Author

Jang, Won Je, primary, Jeon, Mi-Hyeon, additional, Lee, Su-Jeong, additional, Park, So Young, additional, Lee, Young-Sun, additional, Noh, Da-In, additional, Hur, Sang Woo, additional, Lee, Seunghan, additional, Lee, Bong-Joo, additional, Lee, Jong Min, additional, Kim, Kang-Woong, additional, Lee, Eun-Woo, additional, and Hasan, Md Tawheed, additional

Published
2022
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24. Expression of insulin‐like growth factor genes in olive flounder, Paralichthys olivaceus, fed a diet with partial replacement of dietary fish meal.

Author

Moon, Ji‐Sung, Oh, Dae Han, Park, Su‐Jin, Seo, Jin‐Song, Kim, Dong‐Uk, Moon, Seong‐Hwan, Park, Hung Sik, Lim, Sang‐Gu, Lee, Bong‐Joo, Hur, Sang‐Woo, Lee, Kyeong‐Jun, Nam, Taek Jeong, and Choi, Youn Hee

Subjects
FISH feeds, SOMATOMEDIN, FISH meal, GENE expression, PARALICHTHYS, FLATFISHES, SOMATOTROPIN receptors, INSULIN receptors
Abstract

This study analyzed the expression of growth‐related genes of olive flounder, Paralichthys olivaceus, fed a low‐fish meal (FM) diet to investigate the replacement of the FM diet in the field. The expression of growth hormone (GH)/insulin‐like growth factor (IGF) axis genes in the brain/pituitary/liver and plasma hormone concentrations were measured. A basal experimental diet was formulated using 63% FM and 12% soybean meal as the primary protein sources, and then two other diets were made by replacing 20% and 30% of the FM with soy protein concentrate, tankage meal, and poultry by‐products meal. Each diet was fed to duplicate groups of juvenile flounder (150 ± 3.0 g) twice a day. After 20 weeks, the plasma growth‐related hormone concentrations were similar between the control and FM20 groups. Moreover, GH/IGF axis gene mRNA expression in the brain/pituitary/liver was similar between the control and FM20 groups. Immunoblotting of muscle and liver showed the same pattern. This study showed the utility of replacing 20% of the FM diet and supports the possibility of field application. [ABSTRACT FROM AUTHOR]

Published
2023
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27. Characterization of a Bacillus sp. KRF-7 isolated from the intestine of rockfish and effects of dietary supplementation with mannan oligosaccharide in rockfish aquaculture

Author

Jang, Won Je, primary, Lee, Su-Jeong, additional, Jeon, Mi-Hyeon, additional, Kim, Tae-Yong, additional, Lee, Jong Min, additional, Hasan, Md Tawheed, additional, Lee, Hyun-Tai, additional, Park, Jung-Ha, additional, Lee, Bong-Joo, additional, Hur, Sang Woo, additional, Lee, Seunghan, additional, Kim, Kang Woong, additional, and Lee, Eun-Woo, additional

Published
2021
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28. Characteristics and biological control functions of Bacillussp. PM8313 as a host-associated probiotic in red sea bream (Pagrus major) aquaculture

Author

Jang, Won Je, Lee, Kyung-Bon, Jeon, Mi-Hyeon, Lee, Su-Jeong, Hur, Sang Woo, Lee, Seunghan, Lee, Bong-Joo, Lee, Jong Min, Kim, Kang-Woong, and Lee, Eun-Woo

Abstract

Host-associated probiotics (HAPs) are bacteria originally isolated from rearing water or the host's gastrointestinal tract in order to enhance the host's growth and health. This study investigated the HAP potential of Bacillussp. PM8313, isolated from wild red sea bream (Pagrus major), through characterization and feeding trials. Results based on in vitro tests showed that PM8313 is safe, confirming its hemolytic, cytotoxic, and antibiotic resistance. In addition, PM8313 showed advantages as a probiotic with high viability in the gastrointestinal model and a high cell adhesion rate. Whole-genome sequencing demonstrated that PM8313 has a 4,615,871 bp single circular chromosome and a guanine–cytosine content of 45.25%. It also showed the absence of genes encoding virulence factors, such as cytotoxin, enterotoxin, hemolysin, sphingomyelinase, and phospholipase. In the feeding trial, a supplemental diet of 1 × 108 CFU/g PM8313 positively altered the weight gain, digestive enzyme activity, and intestinal microbiota composition of red sea bream. Analysis of nonspecific immune parameters and immune-related gene expression, and a challenge test showed that PM8313 supplementation increases immunity and pathogenic bacteria resistance. Our findings suggest that PM8313 should be considered for application as a novel HAP to red sea bream aquaculture.

Published
2023
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30. Effect of low-fishmeal diets on some digestive physiological responses of juvenile and growing olive flounder (Paralichthys olivaceus) fed at an industrial-scale fish farm

Author

Jo, Su-Jung, primary, Park, Su-Jin, additional, Lee, Seung-Back, additional, Tran, Biet Thanh, additional, Kim, Jae Sig, additional, Song, Jin-Woo, additional, Lee, Bong-Joo, additional, Hur, Sang-Woo, additional, Nam, Taek-Jeong, additional, Lee, Kyeong-Jun, additional, Lee, Seunghyung, additional, and Choi, Youn Hee, additional

Published
2021
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37. A comparative study of effects of dietary mercuric chloride and methylmercury chloride on growth performance, tissue accumulation, stress and immune responses, and plasma measurements in Korean rockfish, Sebastes schlegeli

Author

Jang, Ji-Won, primary, Lee, Seunghyung, additional, Lee, Bong-Joo, additional, Hur, Sang-Woo, additional, Son, Maeng-Hyun, additional, Kim, Kang-Woong, additional, Kim, Kyoung-Duck, additional, and Han, Hyon-Sob, additional

Published
2020
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38. Dietary substitution effect of fish meal with chicken by‐product meal on growth, feed utilization, body composition, haematology and non‐specific immune responses of olive flounder ( Paralichthys olivaceus )

Author

Ha, Min Su, primary, Lee, Ki Wook, additional, Kim, June, additional, Yun, Ahyeong, additional, Jeong, Hae Seung, additional, Lee, Min Jun, additional, Baek, Seong Il, additional, Cho, Sung Hwoan, additional, Kim, Kang Woong, additional, Lim, Sang Gu, additional, Lee, Bong Joo, additional, Hur, Sang Woo, additional, Son, Maeng‐hyun, additional, and Lee, Seunghyung, additional

Published
2020
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44. Effects of dietary supplementation of Bacillus,β-glucooligosaccharide and their synbiotic on the growth, digestion, immunity, and gut microbiota profile of abalone, Haliotis discus hannai

Author

Cadangin, Josel, Lee, Ji-Hye, Jeon, Chae-Yeon, Lee, Eun-Seo, Moon, Ji-Sung, Park, Su-Jin, Hur, Sang-Woo, Jang, Won-Je, and Choi, Youn-Hee

Abstract

Probiotics, prebiotics, and synbiotics are known to improve aquatic animals' growth and health conditions. In this study, we investigated the effect of Bacillus sp.KRF-7 (KRF-7), Bacillus sp.PM8313 (PM8313), β-glucooligosaccharide (BGO), and their synbiotics on the growth, digestive physiology, immunity, and gut microbiota of abalone, Haliotis discus hannai. The control diet (CON) was sprayed with 108CFU/g KRF-7 (PRO1) or PM8313 (PRO2) as probiotics, 0.10% BGO (PRE) as prebiotic, and their combinations (SYN1: PRO1 + BGO; SYN2: PRO2+ BGO) as synbiotic treatments. These diets (triplicates) were given once daily to the abalone (initial body weight: 1.32 ± 0.05 g, initial shell length: 21. 69 ± 0.19 mm) for 12 weeks. The results showed that the PRE diet induced a significant 15% shell length and body weight increase against the CON (SLGR: 45.77% vs. 53.04%; WGR: 182.77% vs. 210.22%), the highest among dietary supplements (P< 0.05). The level of IGF and IGFBP in the cell-free hemolymph, protein expression of IGF signaling, and gene expression of myosin heavy chain in the adductor muscle increased significantly (P< 0.05) following dietary supplementation. Correspondingly, PRE-, PRO1-, and PRO2-fed abalone had the highest trypsin, lipase, and amylase secretion in the hepatopancreas (P< 0.05) and increased histomorphometry (stomach epithelial thickness and intestinal villi height) (P< 0.05). Regarding antioxidative capacity and immunity, the hepatopancreatic expression of SOD, CAT, IRAK-4, NF-Kb, TNF-α, and β-defensin were significantly upregulated in abalone fed with dietary additives compared to the CON (P< 0.05). In terms of gut microbiota profile, PRE-fed abalone had a significant reduction in microbial richness (P< 0.05). The phylum level was similarly occupied, while a diet-specific core microbiota at the genus level was apparent. The findings illustrated that BGO, KRF-7, and PM8313 can be used in abalone aquaculture as growth-promoting and immune-stimulating supplements.

Published
2024
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45. The effect of a long‐term dietary replacement of fishmeal with a mixture of alternative protein sources in a formulated diet on growth performance, body composition and economic efficiency of young Korean rockfish (Sebastes schlegeli).

Author

Kim, Kyoung‐Duck, Jang, Ji‐Won, Lee, Ki Wook, Kim, Kang‐Woong, Lee, Bong‐Joo, Hur, Sang Woo, and Han, Hyon‐Sob

Subjects
FISH meal, ECONOMIC efficiency, BODY composition, FISH growth, FEED utilization efficiency, STRIPED bass, FISH nutrition
Abstract

A long‐term feeding trials were conducted to evaluate the effect substituting dietary fishmeal with a mixture of plant and animal protein sources on growth, body composition and economic efficiency of young Korean rockfish (Sebastes schlegeli). A fishmeal‐based diet was designated the control (Con). Three among the other six diets, respectively, had 30%, 40% and 50% of its fishmeal replaced by a mixture of plant and animal protein sources (designated as FS30, FS40 and FS50 respectively), while the remaining three diets were FS30, FS40 and FS50 diets supplemented with L‐lysine and L‐methionine (FS30AA, FS40AA and FS50AA respectively). Three replicated groups of fish (initial body weight, 86 ± 1.9 g) were fed one of the seven diets for 30 weeks. By the end of the feeding trials, the survival rate of all experimental groups was over 92%. The final mean weight, weight gain, feed efficiency, protein efficiency ratio and condition factor of fish were not significantly affected by dietary treatments. Incidence cost of FS50 diet was significantly lower than Con diet. FS50 and FS40AA diets exhibited significantly higher profit index than the Con diet. FS40AA and FS50 diets were the best economically, followed by FS40, FS50AA, FS30, FS30AA and Con diets. These results suggest that the dietary fishmeal could be substituted with a mixture of plant and animal protein up to 50% in the diet without a reduction in growth and feed utilization of young Korean rockfish. Taking account of economic efficiency, the FS50 diet is recommendable for young Korean rockfish farming. [ABSTRACT FROM AUTHOR]

Published
2021
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46. Dietary substitution effect of fish meal with chicken by‐product meal on growth, feed utilization, body composition, haematology and non‐specific immune responses of olive flounder (Paralichthys olivaceus).

Author

Ha, Min Su, Lee, Ki Wook, Kim, June, Yun, Ahyeong, Jeong, Hae Seung, Lee, Min Jun, Baek, Seong Il, Cho, Sung Hwoan, Kim, Kang Woong, Lim, Sang Gu, Lee, Bong Joo, Hur, Sang Woo, Son, Maeng‐hyun, and Lee, Seunghyung

Subjects
FISH meal, FISH growth, BODY composition, IMMUNE response in fishes, PARALICHTHYS, IMMUNE response, FISH feeds
Abstract

The present study examined the dietary substitution effect of chicken by‐product meal (CBM) for fish meal (FM) on growth, feed utilization, body composition, haematology and non‐specific immune responses of olive flounder, Paralichthys olivaceus. Six isonitrogenic and isolipidic experimental diets were prepared. The control (Con) diet contained 650 g/kg FM. One hundred, 200, 300, 400 and 500 g/kg FM were replaced with CBM, referred to as the CBM10, CBM20, CBM30, CBM40 and CBM50 diets, respectively. A total of 400 juvenile fish averaging 14.7 g was distributed into 20 tanks (20 fish/tank) and fed triplicate groups of each diet, except for quadruplicate groups for the Con and CBM30 diets twice daily to satiation for 8 weeks. Arginine, phenylalanine and threonine content of the experimental diets increased with dietary increased substitution of FM with CBM. The experimental diets did not affect survival, weight gain, specific growth rate, feed consumption and feed utilization of fish. The chemical composition, whole body amino acid profiles, haematological variables and non‐specific immune responses of fish were not changed by the experimental diets. These findings suggest that FM up to 500 g/kg can be substituted with CBM without retardation in growth, feed utilization, haematology and non‐specific immune responses of olive flounder. [ABSTRACT FROM AUTHOR]

Published
2021
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49. Synergistic effects of dietary Bacillus sp. SJ-10 plus β-glucooligosaccharides as a synbiotic on growth performance, innate immunity and streptococcosis resistance in olive flounder (Paralichthys olivaceus)

Author

Hasan, Md Tawheed, primary, Jang, Won Je, additional, Kim, Haham, additional, Lee, Bong-Joo, additional, Kim, Kang Woong, additional, Hur, Sang Woo, additional, Lim, Sang Gu, additional, Bai, Sungchul C., additional, and Kong, In-Soo, additional

Published
2018
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50. Effects of Lactococcuslactis subsp. lactis I2 with ��-Glucooligosaccharides on Growth, Innate Immunity and Streptococcosis Resistance in Olive Flounder (Paralichthys olivaceus)

Author

Hasan, Tawheed, primary, Jang, Won Je, additional, Tak, Jin Yeong, additional, Lee, Bong-Joo, additional, Kim, Kang Woong, additional, Hur, Sang Woo, additional, Han, Hyon-Sob, additional, Kim, Bo-Seong, additional, Min, Do-Huh, additional, Kim, Shin-Kwon, additional, and Kong, In-Soo, additional

Published
2018
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