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Antonopoulou E, Kolygas M, Panteli N, Gouva E, Kontogeorgiou P, Feidantsis K, Chatzopoulos A, Bitchava K, Zacharis C, Bonos E, Giannenas I, Skoufos I, Andreadis SS, Skoulakis G, Athanassiou CG, Nathanailides C. Breeding Substrate Containing Distillation Residues of Mediterranean Medicinal Aromatic Plants Modulates the Effects of Tenebrio molitor as Fishmeal Substitute on Blood Signal Transduction and WBC Activation of Gilthead Seabream ( Sparus aurata). Animals (Basel) 2023; 13:2537. [PMID: 37570345 PMCID: PMC10417334 DOI: 10.3390/ani13152537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/30/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
This work assesses the dietary use of two insect meals of Tenebrio molitor (TM) larvae reared in conventional (TM-10) or MAP-enriched substrates (MAP-TM-10) as fish meal replacements (10%) in the diets of gilthead seabream (Sparus aurata). Fish (n = 4500; 207.19 ± 1.47 g) were divided into three groups with triplicates: control (fed conventional diet), TM-10, and MAP-TM-10 groups. The fish were reared in floating cages for 12 weeks and the dietary effects on white blood cell activation, heat shock proteins, MAPKs, and apoptosis of the fish were evaluated. The MAP-TM-10 group exhibited the highest eosinophilic induction. Phosphorylated levels of p38 MAPK, p44/42 MAPK, HSP70, and HSP90 increased in the TM-10 and MAP-TM-10 groups. In terms of apoptosis, Bax levels were lower in the TM groups compared to the control, and the MAP-TM-10 group showed even lower levels than the TM-10 group. Bcl-2 levels increased in the TM-10 group compared to the control, and further increased in the MAP-TM-10 group. The Bax/Bcl-2 ratio, an apoptosis indicator, decreased in the TM groups, with the MAP-TM-10 group showing a further decrease compared to TM-10. These findings suggest that insects' breeding substrate being enriched with MAPs modulated the effect of TM on cellular stress and apoptosis.
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Affiliation(s)
- Efthimia Antonopoulou
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Markos Kolygas
- Department of Agriculture, University of Ioannina, 47100 Arta, Greece; (M.K.)
| | - Nikolas Panteli
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Evangelia Gouva
- Department of Agriculture, University of Ioannina, 47100 Arta, Greece; (M.K.)
| | - Panagiota Kontogeorgiou
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Konstantinos Feidantsis
- Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Department of Fisheries and Aquaculture, University of Patras, 26504 Messolonghi, Greece
| | - Achilleas Chatzopoulos
- Laboratory of Applied Hydrobiology, Department of Animal Science, School of Animal Biosciences, Agricultural University of Athens, 11855 Athens, Greece
| | - Konstantina Bitchava
- Laboratory of Applied Hydrobiology, Department of Animal Science, School of Animal Biosciences, Agricultural University of Athens, 11855 Athens, Greece
- Skaloma Fishery [A.C], 46300 Sagaida, Greece
| | - Christos Zacharis
- Department of Agriculture, University of Ioannina, 47100 Arta, Greece; (M.K.)
| | - Eleftherios Bonos
- Department of Agriculture, University of Ioannina, 47100 Arta, Greece; (M.K.)
| | - Ilias Giannenas
- School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis Skoufos
- Department of Agriculture, University of Ioannina, 47100 Arta, Greece; (M.K.)
| | - Stefanos S. Andreadis
- Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization “DEMETER”, 57001 Thermi, Greece
| | - Georgios Skoulakis
- AgriScienceGEO, Melpomenis Str. P.O. Box 60561, Industrial Area of Thermi, 57001 Thessaloniki, Greece
| | - Christos G. Athanassiou
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, 38446 Nea Ionia, Greece
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Zhou R, Liu J, Shi X, Fu C, Jiang Y, Zhang R, Wu Y, Yang C. Garlic Powder Supplementation Improves Growth, Nonspecific Immunity, Antioxidant Capacity, and Intestinal Flora of Chinese Mitten Crabs ( Eriocheir sinensis). AQUACULTURE NUTRITION 2022; 2022:6531865. [PMID: 36860460 PMCID: PMC9973155 DOI: 10.1155/2022/6531865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/25/2022] [Accepted: 10/14/2022] [Indexed: 06/18/2023]
Abstract
This study was conducted to survey the effects of garlic powder on growth performance, nonspecific immunity, antioxidant capacity, and intestinal flora structure of Chinese mitten crabs. Altogether, 216 crabs which originally weigh 20.71 ± 0.13 g were randomly allocated into three treatment groups with 6 replicates of 12 crabs per replicate. The control group (CN) was fed a basal diet, while the other two groups were fed the basal diet supplemented with 1000 mg/kg (GP1000) and 2000 mg/kg (GP2000) garlic powder, respectively. This trial lasted 8 weeks. The results showed that the supplementation of garlic powder improved the final body weight, weight gain rate, and specific growth rate of the crabs (P < 0.05). Meanwhile, in serum, better nonspecific immune was confirmed by the enhancement of phenoloxidase and lysozyme levels, with the improvement of phosphatase activities in GP1000 and GP2000 (P < 0.05). On the other hand, the levels of total antioxidant capacity, glutathione peroxidases, and total superoxide dismutase in serum and hepatopancreas were increased (P < 0.05) while malondialdehyde content declined (P < 0.05) as the garlic powder was added to the basal diet. And, catalase in serum also shows an increase (P < 0.05). In both GP1000 and GP2000, genes related to antioxidant and immunity, for instance, Toll-like receptor 1, glutathione peroxidase, catalase, myeloid differentiation factor 88, TuBe, Dif, relish, crustins, antilipopolysaccharide factor, lysozyme, and prophenoloxidase mRNA expression levels, were increased (P < 0.05). The abundance of Rhizobium and Rhodobacter was reduced by adding garlic powder (P < 0.05). This study indicated that dietary addition of garlic powder promoted growth, enhanced nonspecific immunity and antioxidant capacity, activated Toll pathway, IMD pathway, and proPO system, increased antimicrobial peptide expression, while simultaneously improving the intestinal flora of Chinese mitten crabs.
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Affiliation(s)
- Ruoyu Zhou
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
| | - Jinsong Liu
- Key Agricultural Research Institute of Green Animal Health Products of Zhejiang Province, Zhejiang Vegamax Biotechnology Co., Ltd., Anji, Zhejiang 313300, China
| | - Xueyan Shi
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
| | - Chunsheng Fu
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
| | - Ying Jiang
- Institute of Animal Nutrition, Huai'an Kangda Feed Co., Ltd., Xuyi, Jiangsu 211700, China
| | - Ruiqiang Zhang
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
| | - Yanping Wu
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
| | - Caimei Yang
- College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang Agricultural and Forestry University, Hangzhou, Zhejiang 311300, China
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Wei LS, Goh KW, Abdul Hamid NK, Abdul Kari Z, Wee W, Van Doan H. A mini-review on co-supplementation of probiotics and medicinal herbs: Application in aquaculture. Front Vet Sci 2022; 9:869564. [PMID: 36406063 PMCID: PMC9666728 DOI: 10.3389/fvets.2022.869564] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 09/15/2022] [Indexed: 02/03/2024] Open
Abstract
The aquaculture industry is geared toward intensification and successfully meets half of the world's demand for fish protein. The intensive farming system exposes the animal to the risk of disease outbreaks, which has economic consequences. Antibiotics are commonly used for the health management of aquaculture species. However, this has several drawbacks, including the increase in antibiotic resistance in pathogenic bacteria and the entry of antibiotic residues into the human food chain, which is a public health and environmental concern. The potential of probiotics, prebiotics, synbiotics, and medicinal herbs as alternatives to antibiotics for the health management of aquaculture species has been investigated in numerous studies. This review discusses the potential use of combinations of probiotics and medicinal herbs as prophylactic agents in aquaculture, along with the definitions, sources, and modes of action. The positive aspects of combining probiotics and medicinal herbs on growth performance, the immune system, and disease resistance of aquaculture species are also highlighted. Overall, this review addresses the potential of combinations of probiotics and medicinal herbs as feed additives for aquaculture species and the key role of these feed additives in improving the welfare of aquaculture species.
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Affiliation(s)
- Lee Seong Wei
- Department of Agricultural Sciences, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli, Kelantan, Malaysia
- Advanced Livestock and Aquaculture Research Group, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli, Kelantan, Malaysia
| | - Khang Wen Goh
- Faculty of Data Science and Information Technology, INTI International University, Nilai, Malaysia
| | | | - Zulhisyam Abdul Kari
- Department of Agricultural Sciences, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli, Kelantan, Malaysia
- Advanced Livestock and Aquaculture Research Group, Faculty of Agro-Based Industry, Universiti Malaysia Kelantan, Jeli, Kelantan, Malaysia
| | - Wendy Wee
- Center of Fundamental and Continuing Education, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
- Science and Technology Research Institute, Chiang Mai University, Chiang Mai, Thailand
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Mohammady EY, Soaudy MR, Mohamed AE, EL-Erian MMA, Farag A, Badr AM, Bassuony NI, Ragaza JA, El-Haroun ER, Hassaan MS. Can dietary phytogenic mixture improve performance for growth, digestive enzyme activity, blood parameters, and antioxidant and related gene expressions of Nile tilapia, Oreochromis niloticus? Anim Feed Sci Technol 2022. [DOI: 10.1016/j.anifeedsci.2022.115369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Kou H, Hu J, Wang AL, Pan X, Vijayaraman SB, Miao Y, Lin L. Effects of dietary protein on water quality, growth performance, RNA/DNA ratio and haemato-immunological indices of soft-shelled turtle (Pelodiscus sinensis). FISH & SHELLFISH IMMUNOLOGY 2022; 123:127-135. [PMID: 35202804 DOI: 10.1016/j.fsi.2022.02.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
In aquatic animals, dietary protein plays a crucial role in their growth and immunity. A feeding trial was conducted on soft-shelled turtles (Pelodiscus sinensis) to assess the effects of various levels of protein on the specific growth rate (SGR), ambient water quality (total ammonia nitrogen (TAN), total nitrogen (TN) and total phosphorus (TP)), hematological parameters (respiratory burst (RB), red blood cell count (RBC), albumin content (Alb), hemoglobin level (Hb) and osmolality), plasma immunoglobulin M (IgM) levels and lysozyme activity. Soft-shelled turtles weighing about 4.02 g were fed fish meal-based diets with 14.38%, 20.41%, 26.19%, 32.23%, 37.63% and 45.23% protein for 8 weeks. SGR, RBC, Hb, Alb, RB, IgM and lysozyme activity were enhanced as the dietary protein was increased from 14.38% to 26.19%, then reached a plateau. For identical feeding times, TAN and TN were increased with elevating dietary protein levels. While, no statistically significant differences were observed among the 26.19%, 32.23% and 37.63% groups. When the turtles were cultivated for 56 days and fed with 45.23% protein, the TP in the culturing water was higher than that in the other groups. An increase in dietary protein level up to 26.19% increased the RNA/DNA ratio, which subsequently plateaued at a steady level. The levels of dietary protein had no impact on osmolality or alkaline phosphatase (AKP) activity. On the basis of broken-line analyses derived from SGR, the optimum dietary protein level for soft-shelled turtles was found to be 27.11% protein.
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Affiliation(s)
- Hongyan Kou
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, 510225, China
| | - Junru Hu
- Guangdong Key Laboratory of Animal Breeding and Nutrition, Key Laboratory of Animal Nutrition and Feed Science in South China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - An-Li Wang
- Key Laboratory of Ecology and Environment Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Xunbin Pan
- Key Laboratory of Ecology and Environment Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Sarath Babu Vijayaraman
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, 510225, China
| | - Yutao Miao
- Key Laboratory of Ecology and Environment Science in Guangdong Higher Education, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, College of Life Science, South China Normal University, Guangzhou, 510631, China; Institute of Modern Aquaculture Science and Engineering, South China Normal University, Guangzhou, 510631, China.
| | - Li Lin
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong, 510225, China.
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Zare M, Tran HQ, Prokešová M, Stejskal V. Effects of Garlic Allium sativum Powder on Nutrient Digestibility, Haematology, and Immune and Stress Responses in Eurasian Perch Perca fluviatilis Juveniles. Animals (Basel) 2021; 11:ani11092735. [PMID: 34573701 PMCID: PMC8467537 DOI: 10.3390/ani11092735] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 01/05/2023] Open
Abstract
Simple Summary Herbal medicine feed supplements are used as growth promoters, immune system stimulants, and to combat stress. We evaluated the effects of garlic powder in the diet of European perch. The inclusion of garlic powder was shown to improve whole body composition, feed digestibility, and biochemical and immunohematological effects, and increased resistance against overcrowding stress. Abstract The supplementation of fish diets with phytogenics can increase growth performance and can modulate immune system response. European perch Perca fluviatilis (initial weight 25.0 ± 0.4 g) were fed a diet including 0 (Control), 10 (G10), 20 (G20), and 30 (G30) g kg−1 garlic powder. No significant difference in the growth parameters and somatic indices were observed. Significantly higher fat digestibility was observed in G10 and G30 diets compared to in the control and G20 diets(p < 0.05). Significantly greater red blood cell and white blood cell counts were observed with the G10 diet (p < 0.05). Garlic significantly decreased serum cholesterol in all of the experimental groups. Serum albumin was significantly higher in the G10 and G20 diets (p < 0.05). Immediately after the overcrowding stress challenge, the garlic groups showed significantly higher cortisol levels than the control group, while no significant difference was observed in the glucose concentration among groups. At 1 h post-stress, all of the groups that had been fed a garlic-supplemented diet showed lower cortisol levels than the control group, and this trend was maintained at 6 and 24 h post stress (p < 0.05), and glucose level in all garlic groups was significantly lower than control (p < 0.05). Garlic at 10 g kg−1 in feed can improve apparent fat digestibility and selected blood parameters and can enhance resistance against high-density and net handling stress in Eurasian perch.
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Chen J, Wang F, Yin Y, Ma X. The nutritional applications of garlic ( Allium sativum) as natural feed additives in animals. PeerJ 2021; 9:e11934. [PMID: 34434661 PMCID: PMC8362672 DOI: 10.7717/peerj.11934] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 07/19/2021] [Indexed: 12/18/2022] Open
Abstract
Garlic (Allium sativum) is an essential vegetable that has been widely utilized as seasoning, flavoring, culinary and in herbal remedies. Garlic contains several characteristic organosulfur compounds, such as diallyl sulfide, allicin (diallyl thiosulphate), γ-glutamylcysteine, and S-allyl cysteine (alliin) and ajoene, which garlic has beneficial effects on inflammation, oxidative stress markers, hypertension, hyperlipidaemia and endothelial function in vitro or in animal model. These bioactive molecules are also playing pivotal role in livestock and fisheries production apart from its application in humans. Supplementation of animal feed with garlic and its related products is consistent with the modern agricultural concept of organic animal husbandry. This review compiles the information describing the effects of feeding garlic and its extracts on selected performance parameters in animals (chicken, rabbits, ruminants, pigs and fish). This review may provide reference for scientists and entrepreneurs to investigate the applications of feeds added with garlic and allicin by-products for the improvement of animal husbandry and aquatic production.
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Affiliation(s)
- Jiashun Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Fang Wang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Yexin Yin
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Xiaokang Ma
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
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Satora M, Magdziarz M, Rząsa A, Rypuła K, Płoneczka-Janeczko K. Insight into the intestinal microbiome of farrowing sows following the administration of garlic (Allium sativum) extract and probiotic bacteria cultures under farming conditions. BMC Vet Res 2020; 16:442. [PMID: 33187511 PMCID: PMC7666521 DOI: 10.1186/s12917-020-02659-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 10/30/2020] [Indexed: 02/08/2023] Open
Abstract
Background Due to the tendency to reduce antibiotic use in humans and animals, more attention is paid to feed additives as their replacement. Crucial role of feed additives is to improve the health status, production efficiency and performance. In this original research, we estimate the potential influence of garlic (Allium sativum) extract and probiotic formula including Enterococcus faecium, Lactobacillus rhamnosus and Lactobacillus fermentum on the intestinal microbiota of sows, using the next generation sequencing method (NGS). Results Our results indicate that the overall species richness as well as the composition of swine gut microbiota may be shaped by regular feeding with supplemented additives. On the Family and Genus level both additives (garlic extract and probiotics) seem to decrease microbiome diversity and richness. However, when it comes to garlic supplementation, we found the opposite trend on the Species level. Conclusions The analysis of the selected microbial function indicates that both additives used in this study (garlic extract and composition of probiotics) seem to create a greater metabolic potential than estimated in a control group of sows. A general trend of losing or decreasing members of pathogenic species in the swine microbiome seems to occur in relation to both supplemented additives. In the prevention of some bacterial diseases supplemented additives could be considered for future use.
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Affiliation(s)
- Marta Satora
- Department of Epizootiology with Clinic for Birds and Exotic Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Plac Grunwaldzki 45, Wrocław, Poland
| | - Marcin Magdziarz
- Hugo Steinhaus Center, Faculty of Pure and Applied Mathematics, Wrocław University of Science and Technology, Wyspianskiego 27, Wrocław, Poland
| | - Anna Rząsa
- Department of Immunology, Pathophysiology and Veterinary Preventive Medicine, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, Wrocław, Poland
| | - Krzysztof Rypuła
- Department of Epizootiology with Clinic for Birds and Exotic Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Plac Grunwaldzki 45, Wrocław, Poland
| | - Katarzyna Płoneczka-Janeczko
- Department of Epizootiology with Clinic for Birds and Exotic Animals, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Plac Grunwaldzki 45, Wrocław, Poland.
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Chang CC, Lu YC, Wang CC, Ko TL, Chen JR, Wang W, Chen YL, Wang YW, Chang TH, Hsu HF, Houng JY. Antrodia cinnamomea Extraction Waste Supplementation Promotes Thermal Stress Tolerance and Tissue Regeneration Ability of Zebrafish. Molecules 2020; 25:molecules25184213. [PMID: 32937928 PMCID: PMC7571120 DOI: 10.3390/molecules25184213] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/08/2020] [Accepted: 09/12/2020] [Indexed: 12/11/2022] Open
Abstract
Antrodia cinnamomea (AC) has been shown to have anti-inflammatory, anti-tumor, and immunomodulation activities. It is estimated that hundreds of metric tons of AC extraction waste (ACEW) are produced per year in Taiwan. This study aims to assess the feasibility of applying ACEW as feed supplement in the aquaculture industry. ACEW significantly inhibited the growth of microorganisms in the water tank, by around 39.4% reduction on the fifth day with feed supplemented of 10% ACEW. The feed conversion efficiency of zebrafish with 10% ACEW supplementation for 30 days was 1.22-fold compared to that of the control. ACEW dramatically improved the tolerances of zebrafish under the heat and cold stresses. When at water temperature extremes of 38 °C or 11 °C, compared to the 100% mortality rate in the control group, the 10% ACEW diet group still had 91.7% and 83.3% survival rates, respectively. In a caudal fin amputation test, the fin recovery of zebrafish was increased from 68.4% to 93% with 10% ACEW diet after 3-week regeneration. ACEW effectively down-regulated the gene expression of TNF-α, IL-1β, IL-6, and IL-10, and up-regulated the gene expression of IL-4/13A. Additionally, the supplement of ACEW in the feed can maintain and prevent the fish’s body weight from dropping too much under enteritis. Taken together, ACEW has beneficial potential in aquaculture.
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Affiliation(s)
- Chi-Chang Chang
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (Y.-C.L.); (C.-C.W.); (T.-L.K.)
- Department of Obstetrics & Gynecology, E-Da Hospital, Kaohsiung 82445, Taiwan;
| | - Yung-Chuan Lu
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (Y.-C.L.); (C.-C.W.); (T.-L.K.)
- Division of Endocrinology and Metabolism, Department of Internal Medicine, E-Da Hospital, Kaohsiung 82445, Taiwan
| | - Chih-Chun Wang
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (Y.-C.L.); (C.-C.W.); (T.-L.K.)
- Department of Otolaryngology, E-Da Hospital, Kaohsiung 82445, Taiwan
| | - Tsui-Ling Ko
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (Y.-C.L.); (C.-C.W.); (T.-L.K.)
| | - Jung-Ren Chen
- Department of Biological Science and Technology, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (J.-R.C.); (W.W.)
| | - Wei Wang
- Department of Biological Science and Technology, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (J.-R.C.); (W.W.)
| | - Ya-Ling Chen
- Department of Obstetrics & Gynecology, E-Da Hospital, Kaohsiung 82445, Taiwan;
| | - Yu-Wen Wang
- Department of Nutrition, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (Y.-W.W.); (H.-F.H.)
| | - Tzu-Hsien Chang
- Department of Chemical Engineering, I-Shou University, Kaohsiung 82445, Taiwan;
| | - Hsia-Fen Hsu
- Department of Nutrition, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (Y.-W.W.); (H.-F.H.)
| | - Jer-Yiing Houng
- Department of Nutrition, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (Y.-W.W.); (H.-F.H.)
- Department of Chemical Engineering, I-Shou University, Kaohsiung 82445, Taiwan;
- Correspondence: ; Tel.: +886-7-6151100 (ext. 7915)
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Adineh H, Harsij M, Jafaryan H, Asadi M. The effects of microencapsulated garlic (Allium sativum) extract on growth performance, body composition, immune response and antioxidant status of rainbow trout (Oncorhynchus mykiss) juveniles. JOURNAL OF APPLIED ANIMAL RESEARCH 2020. [DOI: 10.1080/09712119.2020.1808473] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Hossein Adineh
- Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
| | - Mohammad Harsij
- Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
| | - Hojatollah Jafaryan
- Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
| | - Mehdi Asadi
- Department of Fisheries, Faculty of Agriculture Sciences and Natural Resources, Gonbad Kavous University, Gonbad Kavous, Iran
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Serradell A, Torrecillas S, Makol A, Valdenegro V, Fernández-Montero A, Acosta F, Izquierdo MS, Montero D. Prebiotics and phytogenics functional additives in low fish meal and fish oil based diets for European sea bass (Dicentrarchus labrax): Effects on stress and immune responses. FISH & SHELLFISH IMMUNOLOGY 2020; 100:219-229. [PMID: 32160965 DOI: 10.1016/j.fsi.2020.03.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
The use of terrestrial raw materials to replace fish meal (FM) and fish oil (FO) in marine fish diets may affect fish growth performance and health. In the last years functional additives have been profiled as good candidates to reduce the effects on health and disease resistance derived from this replacement, via reinforcement of the fish immune system. In the present study, three isoenergetic and isonitrogenous diets with low FM and FO (10% and 6% respectively) were tested based on supplementation either with 0.5% galactomannanoligosaccharides (GMOS diet) or 0.02% of a mixture of essential oils (PHYTO diet), a non-supplemented diet was defined as a control diet. Fish were fed the experimental diets in triplicate for 9 weeks and then they were subjected to a stress by confinement as a single challenge (C treatment) or combined with an experimental intestinal infection with Vibrio anguillarum (CI treatment). Along the challenge test, selected stress and immunological parameters were evaluated at 2, 24 and 168h after C or CI challenges. As stress indicators, circulating plasma cortisol and glucose concentrations were analyzed as well as the relative gene expression of cyp11b hydroxylase, hypoxia inducible factor, steroidogenic acute regulatory protein, heat shock protein 70 and heat shock protein 90 (cyp11b, hif-1α, StAR, hsp70 and hsp90). As immune markers, serum and skin mucus lysozyme, bactericidal and peroxidase activities were measured, as well as gene expression of Caspase-3 (casp-3) and interleukin 1β (il-1ß). The use of functional additives induced a significant (p < 0.05) reduction of circulating plasma cortisol concentration when confinement was the unique challenge test applied. Supplementation of PHYTO induced a down-regulation of cyp11b, hif-1α, casp-3 and il-1β gene expression 2h after stress test, whereas StAR expression was significantly (p < 0.05) up-regulated. However, when combination of confinement stress and infection was applied (CI treatment), the use of PHYTO significantly (p < 0.05) down-regulated StAR and casp-3 gene expression 2h after challenge test, denoting that PHYTO diet reinforced fish capacity of stress response via protection of head kidney leucocytes from stress-related apoptotic processes, with lower caspase-3 gene expression and a higher il-1β gene expression when an infection occurs. Additionally, dietary supplementation with GMOS and PHYTO compounds increased fish serum lysozyme after infection. Both functional additives entailed a better capability of the animals to cope with infection in European sea bass when fed low FM and FO diets.
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Affiliation(s)
- A Serradell
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain
| | - S Torrecillas
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain
| | - A Makol
- Delacon Biotechnik GmbH, Weissenwolffstrasse 14, 4221, Steyregg, Austria
| | - V Valdenegro
- Biomar A/S. BioMar AS, POB 1282 Sluppen, N-7462, Trondheim, Norway
| | - A Fernández-Montero
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain
| | - F Acosta
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain
| | - M S Izquierdo
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain
| | - D Montero
- Grupo de Investigación en Acuicultura (GIA), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Crta. Taliarte S/n, Las Palmas, Canary Islands, 35214, Telde, Spain.
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Karimi Pashaki A, Zorriehzahra* SJ, Ghasemi M, Sharif Rohani M, Hosseini S. Effects of dietary Garlic extract on some blood, immunity and growth parameters of Common Carp fingerlings (Cyprinus carpio). ACTA ACUST UNITED AC 2018. [DOI: 10.29252/ijaah.4.2.28] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Kim JY, Ghassemi Nejad J, Park JY, Lee BH, Hanada M, Kim BW, Sung KI. In vivo evaluation of garlic (Allium sativum) supplementation to rice straw-based diet on mitigation of CH 4 and CO 2 emissions and blood profiles using crossbreed rams. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:5197-5204. [PMID: 29635715 DOI: 10.1002/jsfa.9055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 02/23/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Two experiments were implemented using three cannulated crossbreed rams (Corriedale × Suffolk) fed rice straw-based diet. In vivo evaluation of garlic powder (GP) supplementation to rice straw-based diet on CH4 and CO2 emissions and blood profiles of the rams (body weight = 52 ± 3 kg) was performed. The design was a triplicate 3 × 3 Latin square. Groups were the control (no GP) and two GP groups, which were given supplementation for 0.1 (GP0.1) and 0.5% (GP0.5) of concentrate. The differences between two experiments were data missing of GP0.1 and uncontrolled environment in Experiment 1. Blood profiles were added in Experiment 2. RESULTS In Experiment 1, supplementation of GP to the rams reduced CH4 production significantly (P < 0.05) by 38%. Dry matter intake was not different among the groups in both experiments. In Experiment 2, CH4 was lower in the GP0.5 group than the control group by 7%, whereas CO2 showed no difference among the groups. Serum glutamic oxaloacetic transaminase was significantly (P > 0.05) lower in the GP0.5 group than the control group, whereas glutamic pyruvic transaminase, total protein, urea N, total cholesterol, low-density lipoprotein, calcium, phosphorus, magnesium and non-esterified fatty acids were not significantly (P > 0.05) different. CONCLUSIONS GP supplementation, particularly GP0.5, decreases CH4 emissions in rams fed rice straw-based diets. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Ji Yung Kim
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Jalil Ghassemi Nejad
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Ji Young Park
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Bae Hun Lee
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Masaaki Hanada
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Byong Wan Kim
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
| | - Kyung Il Sung
- Institution of Animal Resources, College of Animal Life Sciences, Kangwon National University, Chuncheon, Korea
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Łuczyńska J, Paszczyk B, Łuczyński MJ. Fish as a bioindicator of heavy metals pollution in aquatic ecosystem of Pluszne Lake, Poland, and risk assessment for consumer's health. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 153:60-67. [PMID: 29407739 DOI: 10.1016/j.ecoenv.2018.01.057] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/24/2018] [Accepted: 01/29/2018] [Indexed: 05/29/2023]
Abstract
Heavy metals content (Zn, Cu and Hg) were measured in gills, liver, gonads and muscles of perch, Perca fluviatilis (L.) and roach, Rutilus rutilus (L.) from Lake Pluszne (north-eastern Poland). Correlations between heavy metals levels and total length, weight, HSI, GSI and FCF were examined. As expected, muscles contained the significantly highest values of Hg (P ≤ .05). The concentrations of Zn were significantly higher in gills of roach and gonads of perch (P ≤ .05), while the liver of fish accumulated significantly more Cu than other organs (P ≤ .05). In all organs of perch the higher content of mercury was found (P ≤ .05). The value of Zn and Cu was highest in organs of roach (P ≤ .05) (with the exception of Zn in muscles P > .05). Sequence of metals in both species was Zn > Cu > Hg. Only in muscle tissue, Hg was significantly positive correlated with weight of roach (r = 0.811, P = .045) and perch (r = 0.652, P = .041), and total length of roach (r = 0.806, P = .005). A positive relationship was also observed between Zn concentration in gills of perch and their weight (r = 0.634, P = .049). In contrary, Zn in gills of roach decreased with weight (r = -0.693, P = .026)) and length (r = -0.668, P = .035). Cu concentration in liver of perch was statistically positively correlated with HSI (r = 0.717, P = .020), whereas Hg content in muscle tissue of roach with FCF (r = 0.643, P = .045). There was negative relationship between Hg in perch gonads and GSI (r = -0.808, P = .005). Metal pollution index (MPI) in gills, liver, gonads and muscles of roach was 7.68, 7.24, 6.77 and 3.13, respectively, whereas in these organs of perch was 3.25 (gills), 4.75 (liver), 5.84 (gonads) and 4.44 (muscles), therefore the contamination of each tissue ranged from very low contamination to low contamination. The concentration of mercury was lower than the maximum acceptable limit estimated by the Commission Regulation (EC) No 629/2008 of 2 July 2008. The values of HI and THQ were below 1, which means that consumption of these fish is not hazardous to the consumer.
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Affiliation(s)
- Joanna Łuczyńska
- Chair of Commodity and Food Analysis, University of Warmia and Mazury in Olsztyn, ul. Plac Cieszyński 1, 10-726 Olsztyn, Poland
| | - Beata Paszczyk
- Chair of Commodity and Food Analysis, University of Warmia and Mazury in Olsztyn, ul. Plac Cieszyński 1, 10-726 Olsztyn, Poland
| | - Marek J Łuczyński
- The Stanisław Sakowicz Inland Fisheries Institute in Olsztyn, ul. Oczapowskiego 10, 10-719 Olsztyn, Poland.
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Ghehdarijani MS, Hajimoradloo A, Ghorbani R, Roohi Z. The effects of garlic-supplemented diets on skin mucosal immune responses, stress resistance and growth performance of the Caspian roach (Rutilus rutilus) fry. FISH & SHELLFISH IMMUNOLOGY 2016; 49:79-83. [PMID: 26700174 DOI: 10.1016/j.fsi.2015.12.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 12/09/2015] [Accepted: 12/12/2015] [Indexed: 06/05/2023]
Abstract
This study was conducted to evaluate the effects of garlic supplementation on some skin mucus immune parameters, mucus antimicrobial activity and growth performance of the Caspian roach (Rutilus rutilus caspicus) fry. Fish (1 ± 0.07 g) were divided into four groups fed diets containing 0 (control), 5, 10 and 15 g kg(-1) garlic for 8 weeks. The results showed that there was a significant increase in weight gain and specific growth rate in those fish fed garlic diets compared with the control (P < 0.05). Condition factor was not significantly affected by garlic dosage. At the end of trial, the epidermal mucus protein level, alkaline phosphatase and antimicrobial activity against 2 g-negative bacteria (Escherichia coli and Serratia marcescens) and gram-positive bacteria (Streptococcus faecium and Micrococcus luteus) were measured. Skin mucus alkaline phosphatase, protein levels and antimicrobial activity were increased following garlic administration, and the bacterial growth inhibition zones were significantly elevated in garlic-fed fish (P < 0.05). In salinity stress experiment, no differences were observed for survival rate among the experimental diets. No mortality was recorded during the feeding trial. These results indicated that dietary garlic beneficially affects the skin mucus immune parameters and growth performance of the Caspian roach fry.
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Affiliation(s)
- Mahbubeh Salmanian Ghehdarijani
- Fisheries Sciences, Department of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Iran.
| | - Abdolmajid Hajimoradloo
- Fisheries Sciences, Department of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Iran
| | - Rasol Ghorbani
- Fisheries Sciences, Department of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Iran
| | - Zahra Roohi
- Fisheries Sciences, Department of Fisheries and Environment, Gorgan University of Agricultural Sciences and Natural Resources, Iran
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Fereidouni MS, Akbary P, Soltanian S. Survival Rate and Biochemical Parameters in Mugil cephalus (Linnaeus, 1758) Larvae Fed Garlic (Allium sativum L.) Extract. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajmb.2015.51002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lee DH, Lim SR, Han JJ, Lee SW, Ra CS, Kim JD. Effects of Dietary Garlic Powder on Growth, Feed Utilization and Whole Body Composition Changes in Fingerling Sterlet Sturgeon, Acipenser ruthenus. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 27:1303-10. [PMID: 25178374 PMCID: PMC4150197 DOI: 10.5713/ajas.2014.14087] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/23/2014] [Accepted: 05/28/2014] [Indexed: 11/27/2022]
Abstract
A 12 week growth study was carried out to investigate the supplemental effects of dietary garlic powder (GP) on growth, feed utilization and whole body composition changes of fingerling sterlet sturgeon Acipenser ruthenus (averaging weight, 5.5 g). Following a 24-h fasting, 540 fish were randomly distributed to each of 18 tanks (30 fish/tank) under a semi-recirculation freshwater system. The GP of 0.5% (GP0.5), 1% (GP1), 1.5% (GP1.5), 2% (GP2) and 3% (GP3) was added to the control diet (GP0) containing 43% protein and 16% lipid. After the feeding trial, weight gain (WG) of fish fed GP1.5, GP2 and GP3 were significantly higher (p<0.05) than those of fish fed GP0, GP0.5 and GP1. Feed efficiency and specific growth rate (SGR) showed a similar trend to WG. Protein efficiency ratio of fish fed GP1.5, GP2, and GP3 were significantly higher (p<0.05) than those of fish groups fed the other diets. A significant difference (p<0.05) was found in whole body composition (moisture, crude protein, crude lipid, ash, and fiber) of fish at the end of the experiment. Significantly higher (p<0.05) protein and lipid retention efficiencies (PRE and LRE) were also found in GP1.5, GP2, and GP3 groups. Broken-line regression model analysis and second order polynomial regression model analysis relation on the basis of SGR and WG indicated that the dietary optimal GP level could be greater than 1.77% and 1.79%, but less than 2.95% and 3.18% in fingerling sterlet sturgeon. The present study suggested that dietary GP for fingerling sterlet sturgeon could positively affect growth performance and protein retention.
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Affiliation(s)
- Dong-Hoon Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Seong-Ryul Lim
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Jung-Jo Han
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Sang-Woo Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Chang-Six Ra
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
| | - Jeong-Dae Kim
- College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701, Korea
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Lee DH, Lim SR, Ra CS, Kim JD. Effects of Dietary Garlic Extracts on Whole Body Amino Acid and Fatty Acid Composition, Muscle Free Amino Acid Profiles and Blood Plasma Changes in Juvenile Sterlet Sturgeon, Acipenser ruthenus. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2012; 25:1419-29. [PMID: 25049498 PMCID: PMC4093024 DOI: 10.5713/ajas.2012.12184] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 06/13/2012] [Accepted: 06/11/2012] [Indexed: 11/27/2022]
Abstract
A series of studies were carried out to investigate the supplemental effects of dietary garlic extracts (GE) on whole body amino acids, whole body and muscle free amino acids, fatty acid composition and blood plasma changes in 6 month old juvenile sterlet sturgeon (Acipenser ruthenus). In the first experiment, fish with an average body weight of 59.6 g were randomly allotted to each of 10 tanks (two groups of five replicates, 20 fish/tank) and fed diets with (0.5%) or without (control) GE respectively, at the level of 2% of fish body weight per day for 5 wks. Whole body amino acid composition between the GE and control groups were not different (p>0.05). Among free amino acids in muscle, L-glutamic acid, L-alanine, L-valine, L-leucine and L-phenylalanine were significantly (p<0.05) higher in GE than in control. However, total whole body free amino acids were significantly lower in GE than in control (p<0.05). GE group showed higher EPA (C22:6n3) and DHA (C22:5n3) in their whole body than the other group (p<0.05). In the second experiment, the effects of dietary garlic extracts on blood plasma changes were investigated using 6 month old juvenile sterlet sturgeon averaging 56.5 g. Fish were randomly allotted to each of 2 tanks (300 fish/tank) and fed diets with (0.5%) or without (control) GE respectively, at the rate of 2% of body weight per day for 23 d. At the end of the feeding trial, blood was taken from the tail vein (n = 5, per group) at 1, 12, and 24 h after feeding, respectively. Blood plasma glucose, insulin and the other serological characteristics were also measured to assess postprandial status of the fish. Plasma glucose concentrations (mg/dl) between two groups (GE vs control) were significantly (p< 0.05) different at 1 (50.8 vs 62.4) and 24 h (57.6 vs 73.6) after feeding, respectively, while no significant difference (p>0.05) were noticed at 12 h (74.6 vs 73.0). Plasma insulin concentrations (μIU/ml) between the two groups were significantly (p<0.05) different at 1 (10.56 vs 5.06) and 24 h (32.56 vs 2.96) after feeding. The present results suggested that dietary garlic extracts could increase dietary glucose utilization through the insulin secretion, which result in improved fish body quality and feed utilization by juvenile sterlet sturgeon.
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Affiliation(s)
| | | | - Chang-Six Ra
- Department of Animal Life System, College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701,
Korea
| | - Jeong-Dae Kim
- Department of Animal Life System, College of Animal Life Sciences, Kangwon National University, Chuncheon 200-701,
Korea
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