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Improving the osmoregulatory capacity of Pacific white shrimp grown in low salinity
https://www.globalseafood.org/advocate/improving-the-osmoregulatory-capacity-of-pacific-white-shrimp-grown-in-low-salinity/?_rt=MTYzfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=60917915e8…salinity. Using the equation by Boyd and Thunjai (2003), we can estimate: SECx = (Sp) (Rx) where SECx is the equivalent concentration in seawater of the ion x; Sp is…
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Low-salinity, inland shrimp culture in Brazil and Ecuador
https://www.globalseafood.org/advocate/low-salinity-inland-shrimp-culture-in-brazil-and-ecuador/?_rt=MTY0fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=2d104b7bb2…regions, however, ion concentration in water due to excessive evaporation can lead to high alkalinity in freshwater. Boyd (1990) noted that clay or loam soils often contain high amounts of…
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Zero exchange, aerobic, heterotrophic systems: key considerations
https://www.globalseafood.org/advocate/zero-exchange-aerobic-heterotrophic-systems-key-considerations/?_rt=MTY1fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=077cd8d711…practices can be addressed effectively by zero exchange, aerobic, heterotrophic (“ZEAH”) culture systems (Boyd and Tucker 1998). Although these systems are already in limited use, their number is growing rapidly…
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Efficacy of probiotics in grow-out systems
https://www.globalseafood.org/advocate/efficacy-of-probiotics-in-grow-out-systems/?_rt=MTY2fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=8677ae6d72…did not produce any measurable improvements in water or sediment quality, or shrimp yield over the untreated tanks. Tests with other species Claude Boyd and co-workers at the International Center…
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Waste in aquaculture: Part 1
https://www.globalseafood.org/advocate/waste-in-aquaculture-part-1/?_rt=MTY3fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=3243ae91dc…culture tanks. According to Boyd (2003), the Global Aquaculture Alliance (GAA) recommended total ammonia nitrogen (un-ionized ammonia + ionized ammonia) of 5 mg/L in the aquaculture effluents as part of…
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Point: There are no essential ingredients in aquaculture feeds
https://www.globalseafood.org/advocate/point-there-are-no-essential-ingredients-in-aquaculture-feeds/?_rt=MTY4fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=125bb67c83…474-475. Pikitch, E.K., Rountos, K.J., Essington, T.E., Santora, C., Pauly, D., Watson, R., Sumaila, U.R., Boersma, P.D., Boyd, I.L., Conover, D.O. and Cury, P., 2014. The global contribution of forage…
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How automatic shrimp feeders impact water and soil quality of grow-out ponds in Ecuador
https://www.globalseafood.org/advocate/how-automatic-shrimp-feeders-impact-water-and-soil-quality-of-grow-out-ponds-in-ecuador/?_rt=MTY5fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=b30c6ca601…determine their organic matter content according to the ignition method (Boyd, 1995). Acoustic feedback-based feeding systems are the most evident example of the benefits offered by automatic feeding technology to…
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Cómo los alimentadores automáticos de camarones impactan la calidad del agua y el suelo de los estanques de engorde en Ecuador
https://www.globalseafood.org/advocate/como-los-alimentadores-automaticos-de-camarones-impactan-la-calidad-del-agua-y-el-suelo-de-los-estanques-de-engorde-en-ecuador/?_rt=MTcwfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=1565ea8fe2…BioMar en Durán (Guayas, Ecuador) para determinar su contenido de materia orgánica según el método de ignición (Boyd, 1995). Los sistemas de alimentación basados en retroalimentación acústica son el ejemplo…
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A circular economy approach to transform the future of marine aquaculture
https://www.globalseafood.org/advocate/a-circular-economy-approach-to-transform-the-future-of-marine-aquaculture/?_rt=MTcxfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=bf0869d89f…Macroalgae Research Inspiring Novel Energy Resources (MARINER) program. Nevertheless, sustained research and development, including the assessment of potential environmental impacts by Boyd et al., will be required to make offshore…
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Global Seafood Alliance: 25 years in the making | A look back to 1997
https://www.globalseafood.org/blog/25th-anniversary-george/?_rt=MTcyfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=a387a8027a…Claude Boyd The first objective of GAA was to gather the facts about mangrove destruction by shrimp farms. A group of international mangrove experts was commissioned to meet in Bangkok…
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Un enfoque de economía circular para transformar el futuro de la acuacultura marina
https://www.globalseafood.org/advocate/un-enfoque-de-economia-circular-para-transformar-el-futuro-de-la-acuacultura-marina/?_rt=MTczfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=3be21f9cec…investigación y desarrollo sostenidos, incluida la evaluación de los posibles impactos ambientales por parte de Boyd et al., para que la acuacultura oceánica en alta mar sea comercialmente viable y…
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Prueba de caliza agrícola en estanques acuícolas
https://www.globalseafood.org/advocate/caliza/?_rt=MTc0fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=7ffa860071…y 12 por ciento. SA-BOYD-Limestone-Tabla-1.csv Fuente(1)Variable: Ca (%)Variable: Mg (%)Variable: pH de la suspensión ID (2) GA-1 30.8 ± 1.3 a3 4.0 ± 0.4 c 8.1 ± 0.1 d Caliza…
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Study identifies maximum holding times for water samples
https://www.globalseafood.org/advocate/study-identifies-maximum-holding-times-for-water-samples/?_rt=MTc1fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=effa7ee088…hardness, which were stable for 72 hours, likely could be held longer, but samples should always be analyzed promptly. Boyd, Recommended holding times, Table 1 VariableTime (hours) pH Analyze on…
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Pangasius juveniles tolerate moderate salinity in test
https://www.globalseafood.org/advocate/pangasius-juveniles-tolerate-moderate-salinity-test/?_rt=MTc2fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=76efc22352…final weights at 20 ppt were significantly lower than at 3 and 13 ppt (Table 1). Boyd, Mean final weight of Pangasius, Table 1 Salinity (ppt)Initial Weight (g)Final Weight (g)…
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Evaluating the effect of a commercial additive on growth and survival of larval Pacific white shrimp
https://www.globalseafood.org/advocate/evaluating-the-effect-of-a-commercial-additive-on-growth-and-survival-of-larval-pacific-white-shrimp/?_rt=MTc3fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=63af6e3c7cResults showed improved growth and survival, including for animals challenged with AHPND Results of this study showed that the application of a commercial additive combining immersion and feeding during larval…
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Evaluating hydrolysates as functional ingredients in Pacific white shrimp feeds
https://www.globalseafood.org/advocate/evaluating-hydrolysates-as-functional-ingredients-in-pacific-white-shrimp-feeds/?_rt=MTc4fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=90641fb451…hydrolysates, they were classified according to the degree of hydrolysis used as high, medium and low degree of hydrolysis (Table 1). Boyd, FCR, Tabla 1 FCRN (kg/t)P (kg/t)Demanda de oxígeno…
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Can a low-cost salt mixture replace sea salts for low-salinity shrimp farming?
https://www.globalseafood.org/advocate/can-a-low-cost-salt-mixture-replace-sea-salts-for-low-salinity-shrimp-farming/?_rt=MTc5fDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=3d44c726b6…commercial reconstituted sea salt (RSS) used to obtain seawater equivalent concentrations of cations (Boyd 2018 ; https://www.aquaculturealliance.org/advocate/revisiting-ionic-imbalance-in-low-salinity-shrimp-aquaculture/ ). https://www.globalseafood.org/advocate/revisiting-ionic-imbalance-in-low-salinity-shrimp-aquaculture/ The low-cost salt mixture (LCSM) used in our trials was…
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Decomposition and accumulation of organic matter in ponds
https://www.globalseafood.org/advocate/decomposition-and-accumulation-of-organic-matter-in-ponds/?_rt=MTgwfDEwfGJveWR8MTc4NTI2OTk4Mg&_rt_nonce=15c2c39190Aquaculture ponds accumulate organic matter from organic fertilizer, remains of microorganisms produced within the pond, feces of the culture animals and uneaten feed. Claude E. Boyd, Ph.D., details the leading…