UTIL ILIZING FEED ADDIT ITIV IVES IN IN PRACT CTIC ICAL TIL - PowerPoint PPT Presentation

UTIL ILIZING FEED ADDIT ITIV IVES IN IN PRACT CTIC ICAL TIL ILAPIA IA DIE IETS FOR DIS ISEASE PREVENTION D.Sc. Gustavo Luiz Naslausky Bozano

Summary - Aquaculture in Brasil. - Current issues in tilapia production. - Results in the use of feed additives in the prevention and control of bacteriosis.

Freshwater fis ish cult lture in in Brasil il 2014 578.800 758.006 t 2015 638.000 10% 722.560 t 2016 640.510 0% 31% 691.700 t 2017 691.700 8% 2018 722.560 4% 640.510 t 2019 758.006 5% 638.000 t 578.800 t Source: PeixeBr, 2020. 2014 2015 2016 2017 2018 2019

Brazilian fish trade balance (US$ millions) 322.000 ton. (Salmon 30%, Sardine 24%, Hake 14%, Cod 6%) Imports Exports Deficit Source: PeixeBr, 2020.

Freshwater fis ish production - 2019 - Brazilian production of farmed freshwater fish reached 758,006 tons in 2019. - This performance represents a growth of 4.9% in relation to the level of the previous year. - Tilapia remains leader among the most produced species in the country. Source: PeixeBr, 2020.

Tila ilapia production - 2019 - Tilapia production was 432,149 tons, representing 57% of the entire Brazilian fish farming production in 2019. - The production of 2019 was 7.96% higher than the production of 2018. - This result consolidates Brazil as the 4th largest tilapia producer in the world. Source: PeixeBr, 2020.

Nativ ive specie ies production - 2019 - Native fish production reached a total of 287,930 tons. - It represented 38% of total production in 2019, having dropped almost 2% in comparison to 2018. Source: PeixeBr, 2020.

Nativ ive specie ies - 2019 Source: Panorama da Aquicultura, Sergio Rocha, Pesca e pescaria.

Other (exotic) specie ies production - 2019 - In the year 2019, the performance of other species of farmed fish, led by carp, trout and panga, jumped 8.72%, rising from 34,370 to 37,927 tons (which remains low). - Their participation in total production rose from 4.6% to 5%. Source: PeixeBr, 2020

Other (exotic) specie ies - 2019 Source: Wikipedia.

Several production systems

Several production systems…with different sizes

Several dif ifferent weather condit itions Brasil have 12 different climates Source: Wikipedia.

Several different weather conditions… wide range of temperatures Source: TempoCampo, 2019.

Dis iseases in in tila ilapia - Mandatory notific ications in in Brasil - Streptococcosis - Streptococcus agalactiae, S. iniae e S. dysgalactiae ; - FNO - Francisella noatunensis subsp. orientalis ; - Motile septicemia - Aeromonas hydrophila, A. caviae e A. sobria . - Edwardsella tarda, Flavobacterium columnare . Source: CNA, 2018.

Dis iseases in in tila ilapia - Streptococcus Source: Panorama da Aquicultura.

Dis iseases in in tila ilapia - Francis isella la Source: Panorama da Aquicultura.

Streptococcus by region / / month Region South Southeast Mid-West Northeast Disease Streptococcus Streptococcus Streptococcus Streptococcus January +++ +++ +++ +++ February ++ +++ +++ +++ March ++ +++ +++ +++ April + ++ ++ ++ May - - - + June - - - + July - - - + August - ++ ++ +++ September + ++ +++ +++ October ++ +++ +++ +++ November ++ +++ +++ +++ December +++ +++ +++ +++

Francisella by region / / month Region South Southeast Mid-West Northeast Disease Francisella Francisella Francisella Francisella January - - - - February - - - - March + + - - April ++ ++ - ++ May +++ +++ + +++ June +++ +++ + +++ July +++ +++ + +++ August ++ ++ - ++ September + + - - October - - - - November - - - - December - - - -

Dis iseases in in tila ilapia – „Traditional treatment“ - Streptococcosis: • Vaccination against Streptococcus agalactiae / Serotype 1 & 2 . • Antibiotic (florfenicol and oxytetracycline). - FNO: • Antibiotic (florfenicol and oxytetracycline).

Protocol to mit itig igate bacteriosis - Vaccination (Streptococcus); - Reduce fish stocking density; - Acquire fingerlings from known and trusted suppliers, ask for external health reports; - Eliminate fishes with all kinds of abnormalities when grading them; - Where Francisella history already exists, do not handle tilapia with less than 150g in temperatures below 22 0 C.

Protocol to mit itig igate bacteriosis - Use a feed strategy, be proactive with your fish nutrition: • Adjust your fish feed before handling them and before periods known of changes in temperatures and rainfall patterns; • Utilize feed additives that can help prevent disease and/or recover animals.

Prebio iotic ic + Se vs. . Control - Protocol - Yeast + Organic Se dosage of 0.5 kg / ton. and 0,15 kg / ton. of feed; - Vaccinated fish; - Stocking density of 65 kg / m 3 . - 76.362 fish in the trial.

Prebio iotic ic + Se vs. . Control - Result lts Fish cost was reduced by 5.35% (0.05 USD/kg), net margin increased in 28.34%.

Prebio iotic ic + Se vs. . Control - Result lts - Fillet yield was improved in 2.20%: • Less discard of fish with deformities; • Less discards of fish weighing less than 400g; • Less discard of fillets with wounds due to streptococcus.

Enhanced organic acid id vs. . Antib ibiotic ic - Protocol - Antibiotic dosage (florfenicol) 15-20 mg / kg biomass, 15 days of treatment, two treatments; - Enhanced organic acid dosage of 0.5 kg / ton. of feed; - Unvaccinated fish; - Stocking density of 55 kg / m 3 .

Enhanced organic acid id vs. . Antib ibiotic ic - Result lts Date Days of trial Initial ammount Initial weight (g) Initial biomass (kg) Organic acid 06/jul 89 19.998 13,60 272,00 13/jul 110 59.997 14,90 894,00 20/jul 101 60.307 16,30 983,05 27/jul 117 41.183 16,80 691,91 07/aug 107 19.999 20,50 410,00 10/aug 110 40.358 17,86 720,68 Total 106 241.842 16,42 3.971,64 06/jul 95 19.999 13,60 272,00 13/jul 102 59.995 14,90 894,00 Control 20/jul 82 39.998 16,30 652,00 27/jul 102 41.008 16,80 689,00 07/aug 96 41.087 19,43 798,32 10/aug 111 19.998 18,50 370,00 17/aug 108 19.998 20,00 400,00 Total 99 242.083 16,83 4.075,33

Enhanced organic acid id vs. . Antib ibiotic ic - Result lts

Enhanced organic acid id vs. . Antib ibiotic ic - Result lts Date Final biomass (kg) Final weight (g) GPD (g) F.C.R. Survival rate (%) Organic acid 06/jul 2.801,76 161,95 1,67 1,08 86,51% 13/jul 11.576,85 218,43 1,85 1,40 88,34% 20/jul 11.977,34 219,61 2,01 1,25 90,44% 27/jul 8.777,26 238,12 1,89 1,49 89,50% 07/aug 3.749,24 214,73 1,82 1,67 87,30% 10/aug 6.540,42 216,57 1,81 1,60 74,83% Total 45.422,87 216,96 1,88 1,41 86,57% 06/jul 2.653,09 165,30 1,60 1,32 80,25% 13/jul 8.811,75 169,46 1,51 1,62 86,67% Control 20/jul 5.131,62 154,89 1,69 1,42 82,83% 27/jul 7.441,90 199,51 1,80 1,43 90,96% 07/aug 7.481,45 193,82 1,83 1,46 93,95% 10/aug 3.875,14 221,44 1,83 1,91 87,51% 17/aug 3.897,94 211,73 1,78 1,96 92,06% Total 39.292,89 184,48 1,70 1,57 87,98%

Enhanced organic acid id vs. . Antib ibiotic ic – Economic Results Control Organic acid Number of fish (initial) 242.083 241.842 Survival rate % 87,98% 86,57% Final weight (g) 184,48 216,96 Biomass (kg) 39.293 45.423 Days of production / trial 99 106 FCR 1,57 1,41 Feed price (US$/kg) $ 0,58 $ 0,33 22,9% Fish production cost (US$/kg) $ 1,05 $ 0,81 Total cost $ 41.186,80 $ 36.701,78 Fish price (US$/kg) $ 1,40 $ 1,40 Total income $ 55.010,20 $ 63.592,20 1,95x Margin $ 13.823,40 $ 26.890,42

Overall ll remark In an increasingly unpredictable environment, a well elaborated feed strategy is paramount to improve the performance of your business and the use of feed additives can help to enhance zootechnical and economical results.

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