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Effects of sand, sediment, vertical surfaces on intensive shrimp production
https://www.globalseafood.org/advocate/effects-of-sand-sediment-vertical-surfaces-on-intensive-shrimp-production/?_rt=NTV8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=3f0f41159de72d6954d30d4ed630fc2f64c65099a75a6f17bb981431a38ee9ca…spokes of a wheel. All treatments had bare walls. The tanks were filled with 25 ppt salinity water from the Colleton River and operated with no water exchange during a…
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Nutrition and genes research at Virginia Tech
https://www.globalseafood.org/advocate/nutrition-and-genes-research-at-virginia-tech/?_rt=NTZ8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=44c61ee3ae1e03b5e1f6d7a3042e3fc2f664785a9857757d56d1617c723719c7…or stress resistance, and thus may be targeted via nutritional intervention to increase the performance or welfare of the cultured animal. Microarray technologies have examined treatment effects on abalone, shrimp,…
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Building a better shrimp nursery, part 2
https://www.globalseafood.org/advocate/building-better-shrimp-nursery-part-2/?_rt=NTd8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=e5c542097567ac9b255acbc01b893a3ecb3d0f88917f86e12d86478894b2269e…with sufficient capacity and emergency back-up power; generator and diesel-powered units as an additional layer of security if electricity and generator(s) fail. And typically installed to run only the air…
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Building a better shrimp nursery, part 3
https://www.globalseafood.org/advocate/building-better-shrimp-nursery-part-3/?_rt=NTh8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=15da4f79c49e1406a04da5198c0d590cb78b2f2ecd3e24b2875f18c85e6838da…valuable production tool that can provide proven benefits and allow for much more efficient use of the carrying capacity of ponds over direct stocking of PL. They can also help…
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Construyendo un mejor pre-criadero de camarones, parte 1
https://www.globalseafood.org/advocate/construyendo-un-mejor-pre-criadero-de-camarones-parte-1/?_rt=NTl8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=3b86c4d00b730de78efd5d2008aff8a20a7ecbe12da542cebdd0fceb63bf99f0…aumentan las densidades de población y disminuye el recambio de agua, las mayores cargas orgánicas aumentan los riesgos para la calidad adecuada del agua y la salud animal. Y hay…
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Construyendo un mejor pre-criadero de camarones, parte 2
https://www.globalseafood.org/advocate/construyendo-un-mejor-pre-criadero-de-camarones-parte-2/?_rt=NjB8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=14f48d3a6b2093ded400da5bd742285a1e24f2448a93f5199da82b1c5b7f402fTecnología de biofloc y consideraciones de calidad de agua Los sistemas de pre-criaderos producen juveniles de camarón que son más fuertes, crecen más rápido y típicamente tienen mejores tasas de…
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Construyendo un mejor pre-pre-criadero de camarones, parte 3
https://www.globalseafood.org/advocate/construyendo-un-mejor-pre-pre-criadero-de-camarones-parte-3/?_rt=NjF8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=2b9d033daf8a261c1fa82468bfc67e3b522737f44643849941cbcf41faf4b166…más eficiente de la capacidad de carga de los estanques comparado con la siembra directa de PL. También pueden ayudar a manejar varios riesgos durante los primeros 20-40 días del…
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Global brine shrimp supply a potential bottleneck to aquaculture expansion, part 1
https://www.globalseafood.org/advocate/brine-shrimp-bottleneck-expansion-part-1/?_rt=NjJ8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=a6fa133bcdef5e77e2eec9c30ace43908750afa06ac2c2ad1dfce2385b9407e2…J. Oceanol. Limnol., 33(6): 1436-1450. 2015), total global production of artemia in recent years has been between 3,000 and 4,000 tons per year. Out of this total, the GSL produces…
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Parasite treatment reduces F. columnare infection in tilapia
https://www.globalseafood.org/advocate/parasite-treatment-reduces-f-columnare-infection-in-tilapia/?_rt=NjN8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=6f3332583b84c876c8c36097c73672d6188ab2fe9070c671226a137be9a9850a…would reduce F. columnare infection in fish and ultimately result in improved fish survival. Sex-reversed hybrid tilapia of about 10-cm length reared in three, 340-L indoor tanks at the Aquatic…
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Virulent Aeromonas hydrophila in channel catfish
https://www.globalseafood.org/advocate/virulent-aeromonas-hydrophila-in-channel-catfish/?_rt=NjR8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=59acd75013161ed671ff758ca30973b215b66c013efbf3afdd8d30c9ce878f33…the cell density reached to approximately 2 x 109 cells/mL. For pathogen challenges conducted in this study, bacterial cells were propagated in TSB using the same batch of stock culture…
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Parasitism enhances tilapia susceptibility to Flavobacterium columnare
https://www.globalseafood.org/advocate/parasitism-enhances-tilapia-susceptibility-to-flavobacterium-columnare/?_rt=NjV8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=23067a285533a6f39abea0b070841aba0027785c8b19645d6f3800527337c89eMucus, epidermis are first lines of defense against invasive microorganisms Tilapia infected with Ichthyophthirius multifiliis show white spots on skin and fins (left). Flavobacterium columnare infection causes lesions in the…
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Ich parasite serves as vector to transmit bacteria to fish
https://www.globalseafood.org/advocate/ich-parasite-serves-as-vector-to-transmit-bacteria-to-fish/?_rt=NjZ8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=9fcadc51dd8bbb2bca786a3264e3501b5cf6c3a185ad73c6087f5a0851c845b9…theront solution, and the tagged E. ictaluri were added at concentrations of colony-forming unit, 4 x 103 CFU and 4 x 107 CFU/mL. The theronts were exposed to E. ictaluri…
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Parasitism enhances susceptibility to bacterial infection in tilapia
https://www.globalseafood.org/advocate/parasitism-enhances-susceptibility-to-bacterial-infection-in-tilapia/?_rt=Njd8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=4d2405ad8530fa6ea0eeae0d575488bfcb774e49528750fa9277b305df2f1cb2…Gyrodactylus and 200 fish free from the parasite were used in the infection trial. These fish were divided into four, 90-fish groups and received one of the following treatments: parasite…
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Common off-flavors in channel catfish following partial pond harvest
https://www.globalseafood.org/advocate/common-off-flavors-channel-catfish-partial-pond-harvest/?_rt=Njh8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=cf0bacd0b8a10b33280f13f9be8fee3f2ea5e7076dd39019deaf78c45ec29eebChanges over time likely due to variation in quality, inadequate sampling The detection of off-flavors in catfish after partial harvest is more likely a statistical anomaly than the result of…
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High-density split-pond systems offer high output, low maintenance
https://www.globalseafood.org/advocate/high-density-split-pond-systems-offer-high-output-low-maintenance/?_rt=Njl8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=7cbcd15f78f71ce81b6a60767b1d19b01e37467b7e38bb40bfe4dfeb6760847b…dissolved-oxygen concentration is 5 mg/L. A six-bladed, 3.66-m-long, 2-m-diameter paddlewheel operated at 2.5 rpm produces a water flow of 60 m3/minute, which is more than adequate to provide oxygen to…
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Antigens provide immunity against ich in channel catfish trials
https://www.globalseafood.org/advocate/antigens-provide-immunity-against-ich-channel-catfish-trials/?_rt=NzB8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=e50142c68cd2a5da8f8792f13bc6a98ce40fac75a3b9166e0233e55f53dcf9ec…sonicated trophonts per gram of fish I.P. injection with 5 percent bovine serum albumin (BSA) Non-immunized control. Four fish were sampled from each immunized group 12 and 21 days after…
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Bath immersion, booster vaccination strategy holds potential for protecting juvenile tilapia
https://www.globalseafood.org/advocate/bath-immersion-booster-vaccination-strategy-holds-potential-for-protecting-juvenile-tilapia/?_rt=NzF8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=1a2fda17d3ecd17acee3a94c47364ef666c7ce5d1270e9ff65679b4f1c84698c…S. iniae serum antibody titers 29 days after vaccination and before S. iniae challenge. The serum antibody was previously shown to correlate with protection against S. iniae (Shelby et al.,…
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Misuses of sodium bicarbonate in pond aquaculture
https://www.globalseafood.org/advocate/misuses-sodium-bicarbonate-pond-aquaculture/?_rt=NzJ8NHxjcmFpZyBsLiBicm93ZHl8MTc5Mjc4NDEwNg&_rt_nonce=d5580971b578db9ba5f61d17d97f7ecda3ca56dfd158b88c06da51dc65323924…long-term solution. Sodium bicarbonate is often added to hauling tank water to improve fish survival. Treating off-flavors Chemicals produced by some blue-green algae can give pond-raised fish and shrimp undesirable…