salinity & tilapia culture
DESCRIPTION
2011 uog summer research apprentice programTRANSCRIPT
By: Jhon Delfin & Liana De Soto
Salinity & Tilapia Culture
(Oreochromis Niloticus x Oreochromis Mossambicus)
The Beginning: Calculations
The Beginning: Calculati ons-Volume : ∏r 2(h)
Finding the inflow rate
Exchange rate
Salinity (ppt)
R H V Inflow Rate Exchange Rate
(in.) (m) (in.) (m) (m3) (m3/min) (%)
33 27.5 0.6985 23 0.5842 0.895 0.016 2574
24 28 0.7112 24 0.6096 0.968 0.019 2826
4 27.5 0.6985 23.25 0.59055 0.905 0.01 1592
14 27.75 0.70485 24 0.6096 0.951 0.0165 2498
Tank # Time:
Target Exchange Rate
Target Salinity
Calculate Inflow Rate(m3/min)
Inflow Rate(liter/min)Total Inflow
Total Exhange Rate
(%) (ppt) SeawaterFreshwater Seawater Freshwater (m3/min) (%)
OT51:04pm 100 33 0.001 0.000 0.622 0.000 0.001 100
OT61:30pm 1600 24 0.007 0.004 7.134 3.567 0.011 1592
OT111:44pm 1600 4 0.000 0.01 0.000 10.000 0.010 1600.000
OT121:45pm 1600 14 0.004 0.007 3.504 7.007 0.011 1592
Calculating Salinity Adjustments
Acclimating tilapia to targeted salinity
Salinity MonitoringMaintenance & Feeding
Weight & count
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 336
8
10
12
14
16
18
20
f(x) = 0.609977116704806 x − 0.403524027459953R² = 0.943990112961662f(x) = 0.530091533180778 x + 1.13409610983982R² = 0.962122570409208f(x) = 0.524942791762014 x + 1.04118993135011R² = 0.939108449116478
f(x) = 0.654233409610984 x − 0.148054919908468R² = 0.964250602164039
Salinity vs. Tilapia Weight
4Linear (4)14Linear (14)24Linear (24)33Linear (33)
July
Ave
rage
Wei
ght (
g)
18 20 22 24 26 28 30 320
0.5
1
1.5
2
2.5
3
3.5
4
Food Conversion Rate
3324414
July
FCR
(%)
33 24 4 143.8
3.9
4
4.1
4.2
4.3
4.4
4.5
Specific Growth Rate
Salinity (ppt)
Dai
ly S
GR
in P
erce
ntag
es (%
)
33 24 4 1482
84
86
88
90
92
94
96
98
100Survival Rate
Salinity (ppt)
Surv
ival
Rat
e in
Per
cent
ages
(%)
33 24 4 1462
64
66
68
70
72
74
76
78
80
Weight Gain
Salinity (ppt)
Body
Mas
s G
aine
d in
Gra
ms
(g)
Conclusion
Feeding
Making of Fish Roe
Algae
CENSORED
Miscellaneous