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Sanu Jose
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Sanu Jose likes the comment:
Hi Sanu. A recent study entitled, “Effect of Water Velocity on Tilapia, Oreochromis niloticus Fingerlings Growth Parameters and Body Composition” (Belal, 2015) looked at horizontal water velocities in fingerling Nile tilapia production. A velocity range of 20-35cm/sec was considered optimal, although lower FCR’s were recorded at a velocity of 25cm/sec as opposed to 35cm/sec where the higher veloc ...
Sanu Jose likes the comment:
Hi SanuFurther to my comments above.It would appear that moderate training actually reorganizes metabolism so as to spare the muscle [against muscle loss] in many teleost's including tilapias (Belal, 2015) with the result that protein growth is promoted over lipid growth in fish that are both fed and continually swum (Christiansen et al., 1989; Lauff and Wood, 1997). The Belal (2015) study indicat ...
Participation in Forum on January 23, 2020
hi, Ray , Great work, what is the logic for higher water movement? better mixing and suspension of the floc? wont the fish be over exercised? affect harvest weight and FCR? is'nt tilapia natural in passive or slow flowing water? any cultured custom probiotics used in feed and water at "Chambo"?? here we are consistently getting 0.7-0.75 FCR in round BFT tanks with co settling tanks, (4 mont ...
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Sanu Jose likes the comment:
Hi Sanu.We wont try to enhance density as there is a correlation between density and FCR's that was apparent in the Chambo Fisheries BFT tank systems operating at 16-22kg/m^3 (as a function of fish size. Rather through further design optimization the aims are to use less power via a more efficient sub-surface diffused aeration system and elevated horizontal water movement from 20cm/sec to 30cm/sec ...
Participation in Forum on January 16, 2020
Hi Ray, Thanks for the reply, wish all success on your 250 ton/year BFT upcoming facility, Where is the location? What is the stocking density proposed? Directional aeration and circulation with airlifts? Solids removal and PH enhancement with settling tank? Oxygen dosing with "U" tube oxygenation of culture water to 8 ppm for higher stocking density, these were some that came to mind after readin ...
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Participation in Forum on January 16, 2020
Dear Ramon, All the "Best Wishes" on your oncoming book "A Guide to Tilapia Production in Biofloc Technology (BFT) Systems" expect it to be path breaking as your "chambo fisheries" innovation, .really looking forward to it. Any new project modifications on the chambo model, what was limitation on higher stock density DO or TAN or other ? 40kg/m3 would have been "GREAT" because you had to ...
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Participation in Forum on January 16, 2020
Dear Ramon, Yes, efficient aeration using nano bubble aeration will help promote the proliferation of beneficial aerobic enzymes and bacteria to live in an aquatic environment. beneficial aerobic enzymes and bacteria will naturally reduce organic loads in an aquatic environment. I think the air bubbles really nano , implodes and transfer the gas to the medium, and the rest rises and burst on the s ...
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Sanu Jose likes the comment:
To all interested Engormix list members. I'm afraid I'm always under pressure and cannot always answer your questions. I am busy writing a book to be called, "A Guide to Tilapia Production in Biofloc Technology (BFT) Systems". I wont be covering shrimp BFT production as there is already a good publication available through the World Aquaculture Society (WAS). My mission is promote tilapia product ...
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January 16, 2020
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Location:Thrissur, Kerala, India
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