Journal of The World Aquaculture Society最新文献

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Reassessment of dietary protein and lipid requirements for large yellow croaker, Larimichthys crocea, reared in net pens 网栏养殖大黄鱼饲料蛋白质和脂肪需要量的再评价
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-08-02 DOI: 10.1111/jwas.13013
Zimo Chen, Anlan Yu, Li Wang, Mingtao Lei, Peng Li, Yan Wang
{"title":"Reassessment of dietary protein and lipid requirements for large yellow croaker, Larimichthys crocea, reared in net pens","authors":"Zimo Chen,&nbsp;Anlan Yu,&nbsp;Li Wang,&nbsp;Mingtao Lei,&nbsp;Peng Li,&nbsp;Yan Wang","doi":"10.1111/jwas.13013","DOIUrl":"10.1111/jwas.13013","url":null,"abstract":"<p>At present, large yellow croaker, <i>Larimichthys crocea</i>, a carnivorous fish ranked fifth in aquaculture production among marine finfishes in the world, still relies on raw fish diet because formulated feed alone is not able to sustain rapid growth of the fish. The present study evaluated growth, feed utilization efficiency, body composition and antioxidant capacity of large yellow croaker fed diets containing four protein (430, 460, 490 and 520 g/kg) and three lipid (60, 90 and 120 g/kg) levels. Fish weighing 11.4 ± 2.8 g were fed with the test diets in net pens for 8 weeks. Final body weight and nitrogen retention efficiency (NRE) were dependent on dietary protein and lipid levels and their interaction. Weight gain, body protein content, serum catalase (CAT) activity and liver glutathione peroxidase (GSH-Px) activity were dependent on dietary protein and lipid levels. Phosphorus retention efficiency was dependent on dietary protein level and interaction between protein and lipid levels. Hepatosomatic index, body lipid and energy contents, activities of superoxide dismutase (SOD) and GSH-Px in serum, and CAT activity and malondialdehyde content in liver were dependent on dietary lipid level. The final body weight and weight gain of fish fed at 490 g/kg protein level did not significantly differ from those fed at 520 g/kg protein level. The final body weight, weight gain and NRE of fish fed at 90 g/kg lipid level were higher than those fed at 60 g/kg lipid level, but did not significantly differ from those fed at 120 g/kg lipid level. The maximum weight gain occurred in fish fed the diets either containing 520 g/kg protein or 90 g/kg lipid. The body lipid content, as well as SOD and GSH-Px activities in serum, were higher in fish fed the diets with 90 and 120 g/kg lipid compared to fish fed the diets with 60 g/kg lipid. The present study reveals that the optimal dietary protein and lipid levels for large yellow croaker reared in net pens were 490–520 g/kg and 90 g/kg, respectively.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44864894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates 饲喂不同蛋白质、脂质和碳水化合物水平的淡水对虾幼虾的生长性能和FAS、CPT1、G6P和HK基因表达
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-08-02 DOI: 10.1111/jwas.13014
Susana Alejandra Frías Gómez, Madison S. Powell, Carlos Alfonso Álvarez González, Luis Héctor Hernández Hernández
{"title":"Growth performance and gene expression of FAS, CPT1, G6P, and HK in juveniles of the freshwater prawn, Macrobrachium acanthurus, fed diets with different levels of protein, lipids, and carbohydrates","authors":"Susana Alejandra Frías Gómez,&nbsp;Madison S. Powell,&nbsp;Carlos Alfonso Álvarez González,&nbsp;Luis Héctor Hernández Hernández","doi":"10.1111/jwas.13014","DOIUrl":"10.1111/jwas.13014","url":null,"abstract":"<p>A feeding trial with <i>Macrobrachium acanthurus</i> juveniles was performed to determine growth performance and utilization of diets varying in protein, lipid, and carbohydrate level. Twelve diets were formulated with three levels of protein (P) and supplemented with different proportions of lipids (L) and carbohydrates (C): P30-L20-C8, P30-L15-C19, P30-L12-C25, P30-L10-C31, P35-L20-C3, P35-L15-C15, P35-L10-C26, P35-L5-C38, P40-L15-C8, P40-L10-C19, P40-L5-C31, and P40-L1-C40. Lipids and carbohydrates were added allowing an overall energy content limit of 400 kcal per 100 g of diet. Each diet was fed to triplicate groups of juveniles with an initial weight of 60.9 ± 10.9 mg (mean ± SD) for 60 days. Overall growth performance and gene expression of fatty acid synthase (<i>FAS</i>), carnitine palmitoyltransferase 1 (<i>CPT1</i>), glucose-6-phosphatase (<i>G6P</i>), and hexokinase (<i>HK</i>) in the hepatopancreas were assessed. Highest weight gain values and specific growth rates were observed in prawns fed diets with 35% of protein inclusion. Expression of <i>FAS</i> was downregulated when fed 30% of protein. Results indicate <i>M. acanthurus</i> use protein as their primary source of energy and when this is low in the diet, lipids are used to spare the energy from proteins. Suggested inclusion of protein, lipids, and carbohydrates in diets for <i>M. acanthurus</i> should be 35%, 15%, and 15%, respectively.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43294479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of tributyrin on the growth performance, survival, tolerance to hypoxic stress, and nutrient digestibility of Pacific white shrimp, Litopenaeus vannamei, fed different levels of soybean meal 三丁酸甘油对不同豆粕水平下凡纳滨对虾生长性能、存活率、耐缺氧性和养分消化率的影响
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-30 DOI: 10.1111/jwas.13016
Tirawat Rairat, Putsucha Phansawat, Arunothai Keetanon, Parattagorn Kachapol, Sunisa Kumphaphat, Lalitphan Kitsanayanyong, Chi-Chung Chou, Niti Chuchird
{"title":"Effects of tributyrin on the growth performance, survival, tolerance to hypoxic stress, and nutrient digestibility of Pacific white shrimp, Litopenaeus vannamei, fed different levels of soybean meal","authors":"Tirawat Rairat,&nbsp;Putsucha Phansawat,&nbsp;Arunothai Keetanon,&nbsp;Parattagorn Kachapol,&nbsp;Sunisa Kumphaphat,&nbsp;Lalitphan Kitsanayanyong,&nbsp;Chi-Chung Chou,&nbsp;Niti Chuchird","doi":"10.1111/jwas.13016","DOIUrl":"10.1111/jwas.13016","url":null,"abstract":"<p>The study aimed to evaluate the effect of tributyrin on the growth performance, survival, hypoxia tolerance, and nutrient digestibility of Pacific white shrimp fed 25% and 50% soybean meal (SBM) diets. Six experimental diets were formulated: (1) 25% SBM without tributyrin; (2) 25% SBM with 0.05% tributyrin; (3) 25% SBM with 0.1% tributyrin; (4) 50% SBM without tributyrin; (5) 50% SBM with 0.05% tributyrin; and (6) 50% SBM with 0.1% tributyrin. The shrimp were fed the experimental diets daily for 10 weeks. Tributyrin supplementation at 0.1% diet significantly improved the weight gain of shrimp that fed 25% SBM but not the other groups. Nevertheless, shrimp that fed tributyrin had significant improvement in survival rate at both SBM levels. Significant reductions in <i>Vibrio</i> spp. counts in the hepatopancreas and intestine were also evident in all tributyrin-fed groups. In addition, 0.1% tributyrin in both SBM levels significantly enhanced the shrimp tolerance to hypoxia. Lastly, the digestibilities were generally unaffected by the tributyrin except only for the lipid digestibility of the 0.1% tributyrin in 25% SBM group, which showed a significant increase. Overall, tributyrin was proven beneficial for the shrimp's health, especially for those fed diet with a moderate level of SBM (25%).</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49452505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Yolk resorption and larval development in the brackish river prawn Macrobrachium macrobrachion under laboratory conditions: Perspectives for aquaculture 实验室条件下微咸水河虾Macrobrachium macrobachion的卵黄吸收和幼体发育:水产养殖前景
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-26 DOI: 10.1111/jwas.13015
Guillaume Koussovi, Arsène Mathieu Houssou, Dimas Armando Orés Daves, Farokh Niass, Clément Agossou Bonou, Laura López Greco, Elie Montchowui
{"title":"Yolk resorption and larval development in the brackish river prawn Macrobrachium macrobrachion under laboratory conditions: Perspectives for aquaculture","authors":"Guillaume Koussovi,&nbsp;Arsène Mathieu Houssou,&nbsp;Dimas Armando Orés Daves,&nbsp;Farokh Niass,&nbsp;Clément Agossou Bonou,&nbsp;Laura López Greco,&nbsp;Elie Montchowui","doi":"10.1111/jwas.13015","DOIUrl":"10.1111/jwas.13015","url":null,"abstract":"<p><i>Macrobrachium macrobrachion</i> is an African native brackish river prawn with a high commercial value. Currently, there is little information on the post-larval production of this species. Two experiments were conducted in the laboratory to develop production techniques for this species. The first experiment analyzed the duration of yolk resorption and the second described the larval stages. Yolk resorption was studied in 240 newly hatched larvae for 24 h based on the reduction in yolk area over time. For larval development stages, six breeding tanks containing 100 L with a density of 50 larvae/L were used. Larvae were fed a combination of <i>Artemia</i> nauplii, <i>Brachionusplicatilis</i>, and pelleted food (Larviva ProStart, Biomar Efico). The results have shown that the area of yolk reserves varied significantly in the hours after hatching. At 14 h after hatching, each larva resorbed approximately 85% of its yolk reserve, and at 18 h after hatching, each of them still had approximately 6.1%. Twelve larval stages were identified and described in three critical stages. <i>M. macrobrachion</i> larvae are lecithotrophic and need to start exogenous feeding at 14 h at the earliest and 18 h at the latest after hatching. These results are the first to highlight the potential for mass production of brackish river prawns.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46604509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The use of chemical and biological settlement cues in enhancing the larval settlement of abalone (Haliotis midae): Implications for hatcheries and ocean ranching 利用化学和生物沉降线索促进鲍鱼幼虫的沉降:对孵化场和海洋牧场的影响
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-20 DOI: 10.1111/jwas.13001
Ziyanda B. Mzozo, Sanet Hugo, Niall G. Vine
{"title":"The use of chemical and biological settlement cues in enhancing the larval settlement of abalone (Haliotis midae): Implications for hatcheries and ocean ranching","authors":"Ziyanda B. Mzozo,&nbsp;Sanet Hugo,&nbsp;Niall G. Vine","doi":"10.1111/jwas.13001","DOIUrl":"10.1111/jwas.13001","url":null,"abstract":"<p>Reducing the time to settlement and metamorphosis of abalone larvae is critical for ensuring that abalone larvae settle within the seeding site for ocean ranching or to increase production in hatcheries. This study investigated the effect of biological (planktonic <i>Nitzschia</i> sp.) and chemical (potassium chloride) cues in inducing settlement and metamorphosis of abalone larvae <i>Haliotis midae</i> on diatom-coated plastic sheets. Larvae were exposed to different concentrations of KCl (10–20 mM), with settlement being highest at 10 mM in the first 20 h. Settlement of larvae exposed to a combined KCl and <i>Nitzschia</i> treatment for 24 h was highest, followed by larvae exposed to KCl for 12 h, while larvae exposed to KCl for 24 h, and both controls (12 and 24 h) had the lowest settlement. However, in both experiments, larval settlement in all treatments declined after 24 h of exposure, while that of the controls (no added settlement cues) increased and surpassed the other treatments after 24 h. Finally, the settlement was very low on uncoated sheets, compared to diatom-coated sheets, regardless of exposure to different combinations of KCl and <i>Nitzschia</i>. The exposure period's results should be interpreted with caution when drawing biological conclusions for field studies. This is due to the dramatic decrease in mean settlement post-exposure to the cue. Therefore, we hypothesize that exposure of <i>H. midae</i> larvae to 10 mM KCl and <i>Nitzschia</i> sp. will not enhance settlement in the ocean, as the inducers are primarily only effective at a KCl concentration level equal to 10 mM for 12 h. However, long-term exposure to KCl and <i>Nitzschia</i> over 24 h could be used in hatcheries to improve the settlement of <i>H. midae</i> larvae.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44059251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the economic impacts of severe skeletal anomalies in Mediterranean hatcheries culturing seabream and seabass 评估地中海养殖海鲷和海鲈的孵化场严重骨骼异常对经济的影响
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-19 DOI: 10.1111/jwas.13008
Javier Cantillo, Juan Carlos Martín, Concepción Román
{"title":"Assessing the economic impacts of severe skeletal anomalies in Mediterranean hatcheries culturing seabream and seabass","authors":"Javier Cantillo,&nbsp;Juan Carlos Martín,&nbsp;Concepción Román","doi":"10.1111/jwas.13008","DOIUrl":"10.1111/jwas.13008","url":null,"abstract":"<p>The economic impact of skeletal anomalies in aquaculture farming is a significant issue for the industry, as deformed fish are frequently discarded because of their low survival rate and a variety of other disadvantages, including increased costs, consumer distrust of aquaculture products, and ethical concerns. The goal of this article is to propose a method for calculating the direct costs of severe skeletal anomalies in typical Mediterranean seabream and seabass aquaculture hatcheries using a deterministic static model programmed in MATLAB that simulates their annual operation. Our findings suggest that larger hatcheries experience higher direct costs associated with severe skeletal anomalies but have better financial stability and significantly higher expected profits. Mean results indicate that the annual economic losses of severe skeletal anomalies for seabream and seabass Mediterranean aquaculture are 22.88 million euros per year for a scenario of low severe skeletal anomalies, 65.34 million euros per year for a scenario of medium severe skeletal anomalies, and 115.98 million euros per year for a scenario of high severe skeletal anomalies. Furthermore, some options for increasing the financial stability of the hatcheries are to increase the sale price of fingerlings, reduce the feed conversion ratio, and reduce the feed unit cost.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45286324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of light spectrum, salinity, and glucose levels on Spirulina morphology 光谱、盐度和葡萄糖水平对螺旋藻形态的影响
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-18 DOI: 10.1111/jwas.13012
Ahmad Nosratimovafagh, Abolghasem Esmaeili Fereidouni, Felix Krujatz
{"title":"Effect of light spectrum, salinity, and glucose levels on Spirulina morphology","authors":"Ahmad Nosratimovafagh,&nbsp;Abolghasem Esmaeili Fereidouni,&nbsp;Felix Krujatz","doi":"10.1111/jwas.13012","DOIUrl":"10.1111/jwas.13012","url":null,"abstract":"<p>This study evaluated how light spectrum, salinity, and glucose level affect <i>Spirulina</i> morphology, using response surface methodology (RSM). A full factorial experiment was conducted including three light conditions with different predominant spectral characteristics (“white”: 100% white; “red”: 80% red, 15% blue, and 5% green; and “yellow”: 80% yellow, 15% blue, and 5% green), four NaCl concentrations (0, 5, 15, 30 g/L), and four glucose levels (0, 1.5, 2, 2.5 g/L). Light spectrum conditions and salinity had significant effects on the filament length, spiral diameter, and screw pitch length. Glucose only had a significant effect in terms of the spiral diameter. The maximum filament length (1274 μm; under 30 g/L NaCl and 2.5 g/L glucose), spiral diameter (47 μm; under 1 g/L NaCl and 2 g/L glucose), and screw pitch length (112 μm; under 1 g/L NaCl and 2 g/L glucose) were attained under yellow light. In line with the simulation, more compacted filaments, that is, with a greater diameter (41 μm) and shorter screw pitches (78 μm), are observed under “red” light (4 g/L NaCl and 2.5 g/L glucose). Because longer but compact filaments are desirable for easier harvesting, we recommend a light spectrum that is predominantly red with a NaCl concentration of 5.8 g/L deprived of glucose, for the cost-effective harvesting of <i>Spirulina</i> biomass.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43097503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The economics of recirculating aquaculture systems 循环水产养殖系统的经济性
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-11 DOI: 10.1111/jwas.13004
Carole R. Engle
{"title":"The economics of recirculating aquaculture systems","authors":"Carole R. Engle","doi":"10.1111/jwas.13004","DOIUrl":"https://doi.org/10.1111/jwas.13004","url":null,"abstract":"<p>Recirculating Aquaculture Systems (RAS) have become part of the global aquaculture landscape. Announcements of new, planned investments in large-scale RAS in countries around the world appear frequently in the aquaculture news media. Yet RAS, as a viable production system for aquaculture businesses, are not new. Blue Ridge Aquaculture Inc. (USA), for example, has been in continuous business for more than 30 years and is a clear pioneer and success story of a profitable, large-scale RAS farm. A few RAS farms have operated successfully in the United States for more than 15 years on a much smaller scale. Salmon smolt production in RAS has further emerged as a profitable sector in the salmon supply chain (Bjorndal &amp; Tusvik, <span>2017</span>). Less well publicized are other fish farming businesses that have incorporated RAS into their overall pond-based farming operations. In some cases, the RAS is used to grow fingerlings over the winter to a larger size for stocking into ponds in the spring to reach harvest size earlier in the year and extend the sales period for their crops. Other farms have installed RAS to produce specialty fish species that are sold at lower quantities but have high value in the market. Thus, there are proven examples of the profitability of RAS in global aquaculture.</p><p>What are new are the substantial investments in turn-key RAS facilities planned or proposed to operate on very large scales. While there are clear examples of profitable RAS-based businesses, many of the news stories continue to refer to the “unproven economics” of RAS. This editorial will attempt to break down what is known about the economics of RAS.</p><p>The press and those seeking venture capital for large RAS investments tout many advantages of RAS and often that RAS are the “future” of aquaculture. Chief among these claims is that RAS are more environmentally sustainable than other aquaculture production systems, and that a RAS facility can be located anywhere. Such claims are key to successful recruitment of venture capital, particularly the Environmental, Social, and Governance (ESG) capital that has been targeted by many RAS startup ventures.</p><p>Economics provides a lens through which to examine these claims. While economists use monetary values as a way to standardize discussion of relative quantities of inputs and outputs, at its most fundamental level, economics is “the study of scarcity, the study of how people use resources and respond to incentives…” (American Economic Association, <span>2023</span>). After all, if a producer uses resources very efficiently, then the costs per unit of fish, shellfish, or shrimp associated with that use will be lower than if resources are used less efficiently. Thus, production costs per kg of aquaculture product are closely associated with the efficiency of resource use.</p><p>Are RAS more efficient than pond or raceway production of aquaculture crops? In terms of land, yes. RAS produce more kg of f","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.13004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50149435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The economics of recirculating aquaculture systems 循环水养殖系统的经济学
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-11 DOI: 10.1111/jwas.13004
C. Engle
{"title":"The economics of recirculating aquaculture systems","authors":"C. Engle","doi":"10.1111/jwas.13004","DOIUrl":"https://doi.org/10.1111/jwas.13004","url":null,"abstract":"","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64366638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inclusion effect of jack mackerel, Trachurus japonicus, meal in the diet of rockfish, Sebastes schlegeli, on growth, feed utilization, biochemical composition, and innate immune responses 在石斑鱼日粮中添加青花鱼、日本沙棘鱼和鱼粉对石斑鱼生长、饲料利用、生化组成和先天免疫反应的影响
IF 2.8 3区 农林科学
Journal of The World Aquaculture Society Pub Date : 2023-07-06 DOI: 10.1111/jwas.13003
June Kim, Sung Hwoan Cho
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