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

• Aquaculture in Brasil.
• Current issues in tilapia production.
• Results in the use of feed additives in the prevention and

control of bacteriosis. Summary

Freshwater fis ish cult lture in in Brasil il

578.800 t 638.000 t 640.510 t 691.700 t 722.560 t 758.006 t

2014 2015 2016 2017 2018 2019

2014 578.800 2015 638.000 10% 2016 640.510 0% 2017 691.700 8% 2018 722.560 4% 2019 758.006 5%

31%

Source: PeixeBr, 2020.

Brazilian fish trade balance (US$ millions)

Imports Exports Deficit 322.000 ton. (Salmon 30%, Sardine 24%, Hake 14%, Cod 6%)

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
• f 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
• f 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
• ther 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

Source: Wikipedia.

Brasil have 12 different climates

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 220C.

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
• f 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 / m3.
• 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 / m3.

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

Organic acid

Date Days of trial Initial ammount Initial weight (g) 06/jul 89 19.998 13,60 13/jul 110 59.997 14,90 20/jul 101 60.307 16,30 27/jul 117 41.183 16,80 07/aug 107 19.999 20,50 10/aug 110 40.358 17,86 Total 106 241.842 16,42

Control

06/jul 95 19.999 13,60 13/jul 102 59.995 14,90 20/jul 82 39.998 16,30 27/jul 102 41.008 16,80 07/aug 96 41.087 19,43 10/aug 111 19.998 18,50 17/aug 108 19.998 20,00 Total 99 242.083 16,83 Initial biomass (kg) 272,00 894,00 983,05 691,91 410,00 720,68 3.971,64 272,00 894,00 652,00 689,00 798,32 370,00 400,00 4.075,33

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

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

Organic acid

Date Final biomass (kg) Final weight (g) GPD (g) F.C.R. Survival rate (%) 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%

Control

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% 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%

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

Enhanced organic acid id vs. . Antib ibiotic ic – Economic Results

22,9%

Fish price (US$/kg) $ 1,40 $ 1,40 Total income $ 55.010,20 $ 63.592,20 Fish production cost (US$/kg) $ 1,05 $ 0,81 Total cost $ 41.186,80 $ 36.701,78

Margin $ 13.823,40 $ 26.890,42 1,95x

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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