• Sonuç bulunamadı

2. The water quality in aquaculture and the selection of culture site

N/A
N/A
Info
İndir
Protected

Academic year: 2021

Share "2. The water quality in aquaculture and the selection of culture site"

Copied!
11
0
0

Yükleniyor.... (view fulltext now)

Şimdi indir ( 11 sayfa )

Tam metin

(1)
(2)

Fundamentals for optimal performance and on-farm

disease prevention and control

Fish

Environment

Pathogen

• Good husbandry

• Good nutrition

• Good genetic stock

• Good management

• Good environment

• Good bio-security

Ta

ke

n

Fr

om

:

.o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ad s/ Pr s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(3)

Ta

ke

n

Fr

om

:

htt p: // im ag es .p cm ac .o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ion s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(4)

Succession

• The aquatic organisms within an aquaculture pond will vary

over time

• It is therefore important to have a good understanding of the

population dynamics within your pond to stabilise population

numbers of aquatic organisms and to ensure that the system

will not crash.

Ta

ke

n

Fr

om

:

.o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ad s/ Pr s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(5)

Changes in Oxygen level due to different algae density

Ta

ke

n

Fr

om

:

htt p: // im ag es .p cm ac .o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ion s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(6)

Oxygen dynamics

Ta

ke

n

Fr

om

:

.o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ad s/ Pr s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(7)

pH daily fluctuations

Ta

ke

n

Fr

om

:

htt p: // im ag es .p cm ac .o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ion s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(8)

Osmoregulation

• A freshwater fish will gain water via osmosis.

• Excess water is excreted in the urine and ion uptake is through the gills

• If salinity is too high, the fish will start to lose water to the environment. As

freshwater fish are not physiologically adapted to osmoregulate within a

saline water source, decreased growth and survival can occur under these

conditions

Ta

ke

n

Fr

om

:

.o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ad s/ Pr s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(9)

Alkalinity changes in different types of pond

Ta

ke

n

Fr

om

:

htt p: // im ag es .p cm ac .o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ion s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(10)

Water quality limits

Ta

ke

n

Fr

om

:

.o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ad s/ Pr s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

(11)

Water quality limits

Boyd (1998) “Water Quality for Pond Aquaculture”

Ta

ke

n

Fr

om

:

htt p: // im ag es .p cm ac .o rg /S iS Fi les /S ch oo ls/ AL /M ob ileC ou nty /B ry an tH ig h/ Up lo ion s/ W AT ER %2 0Q UA LIT Y%2 0A ND %2 0M AN AG EM EN T.p pt

Referanslar

Şimdi indir ( PDF - 11 sayfa - 496.61 KB )

Benzer Belgeler

The outer pipe is used to pull flow from the bottom of the tank and the inner pipe is used to set the water depth within the tank

b) Make sure that the bottom level of the inlet is at the same level as the bottom of the water feeder canal and at least 10 cm above the maximum level of the water in the pond..

Strength of Selection Pressure Is an Important Parameter Contributing to the Complexity of Antibiotic Resistance Evolution

For the majority of the drugs, we found that strongly selected populations ac- quired higher number of mutations compared with mildly selected populations although they acquired

Is it possible to have a role of coronary artery course anomaly in the pathogenesis of atherosclerotic lesions?

Due to her ongoing symptoms, computed tomography coronary angiography was performed which revealed right coronary artery (RCA) originating from the left coronary sinus and,

2) Quantitative analysis: It is aimed to determine the quantities of the substances

Analytical methods are classified according to the measurement of some quantities proportional to the quantity of analyte. Classical Methods and

It should be ensured that the amount of the indicator to be used is to be as small as possible.

The turning range of the indicator to be selected must include the vertical region of the titration curve, not the horizontal region.. Thus, the color change

• Understand the components of the cash cycle and the operating cycle and why it is important

• Operating cycle = inventory period + accounts receivable

THE STUDY OF POPULATION ECOLOGY APPROACH TO ORGANIZATION

In this study, the meaning of ecology and its history, divisions of ecology, environment and natural selection, Relationships with their environment in a

Understanding the Harms of HES: A Review of the Evidence to Date

The aim of the journal is to contribute to the literature and field of anaesthesiology by publishing clinical and experimental research articles, case reports, letters to