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Number of Results: 176

P

PABA (PARA-AMINOBENZOIC ACID)

PACKED CELL VOLUME

PACKED CELLS

PACKED COLUMNS

PANCREAS

PANCREAS DISEASE

PANCREATITIS

PANDEMIC

PANTOTHENIC ACID

PANTOTHENIC ACID DEFICIENCY

PAPILLOMA

PARAMETER

PARASITE

PARASITE

PARASITISM

PARENCHYMA

PARTICULATE ORGANIC MATTER (POM)

PASTEURELLOSIS

PASTEURIZATION

PASTEURIZED FISH

PATHO-BIOLOGY

PATHOGEN

PATHOGENESIS

PATHOGENIC

PATHOLOGICAL CONDITION

PATHOLOGY

PCR

PECTORAL FIN

PEDIVELIGER

PEDUNCLE

PEDUNCLE DISEASE

PELECYPODA

PELLET

PELVIC FIN

PENDULUM FEEDER

PENICILLIN

PENTASTOMIDA

PEPSIN

PEPSINOGEN

PEPTIDE

PERICARDIUM

PERILEMMA

PERISHABILITY

PERISTALSIS

PERITONEAL CAVITY

PERITONEUM

PERITONITIS

PERIVASCULAR

PERMANGANATE

PERNICIOUS ANAEMIA

PEROXIDE VALUE

PESTICIDE

PETRI DISH

PFISTERIA .SP.

pH

PHAGE

PHAGOCYTE

PHAGOCYTIC

PHAGOCYTOSIS

PHARYNGEAL

PHARYNX

PHASE CONTRAST MICROSCOPY

PHENOGRAM

PHENOL

PHENOTYPE

PHOSPHATES

PHOSPHATES

PHOSPHOLIPID

PHOSPHORUS

PHOSPHORUS

PHOTOPERIOD

PHOTOPERIOD MANIPULATION

PHOTOPERIODISM

PHOTOSYNTHESIS

PHOTOTROPH

PHYSIOLOGY

PHYSOCLISTOUS

PHYSOSTOMOUS

PHYTOPLANKTON

PIGMENT

PIGMENTATION

PINEAL

PINOCYTOSIS

PISCINE

PITUITARY GLAND

PLACOID SCALE (denticle scale)

PLANKTON

PLAQUE

PLASMA

PLASMA CELL

PLASMID

PLASMODIUM

PLASTICENE

PLEOPOD

PLEROCERCOID

PLOIDY

PNEUMATIC BARRIER

PNEUMATIC DUCT

POIKILOTHERMIC

POISON

POISONING

POLLUTION

POLYCHAETES

POLYCULTURE

POLYMERASE CHAIN REACTION (PCR)

POLYMORPHISM

POLYNUCLEAR AROMATIC HYDROCARBONS (PAH)

POLYPLOID CELL

POLYPLOIDY

POLYSACCHARIDE

POLYUNSATURATED

POLYUNSATURATED FATTY ACID)PUFA)

POPEYE

POPULATION

POPULATION EQUIVALENT

POSTERIOR

POSTERIOR

POTASSIUM (K)

POTASSIUM PERMANGANATE

POTENTIATED SULPHONAMIDES

Ppb

Ppm

Ppt

PRAWN

PREDISPOSITION

PREMIX

PREOPERCULE

PRESERVATION

PRESSURE SHOCK

PREVALENCE

PREVENTATIVE MEDICINE

PREY

PRIMARY LAMELLA

PRIMARY PRODUCTION

PRIMER (MOLECULAR GENETICS)

PROBIOTIC

PROCAMBRUS CLARKII

PROCERCOID

PROCESSED DIET

PROCTODERM

PRODUCER

PRODUCTION

PRODUCTIVE PROTEIN VALUE

PRODUCTIVITY

PROGENY

PROGNOSIS

PROGRESSIVE INFECTION

PROKARYOTE

PROLIFERATIVE KIDNEY DISEASE; PKD

PRONEPHROS

PROPAGATION

PROPHYLAXIS

PROTEASE

PROTEIN

PROTEIN EFFICIENCY RATIO

PROTEIN SKIMMING

PROTEIN UTILIZATION

PROTEINACIOUS

PROTHROMBRIN

PROTOZOA

PROTOZOEA

PSEUDOBRANCH

PSEUDOBRANCHIUM

PSEUDOCYST

PSEUDOFAECES

PSEUDOMONADAL SEPTICAEMIA

PUFA

PURIFIED DIET

PURULENT

PUS

PUSTULE

PUTREFACTION

PYKNOSIS

PYLORIC CAECA

PYRIDOXINE

a

b

c

d

e

f

g

h

i

j

k

l

m

n

o

p

q

r

s

t

u

v

w

x

y

z

BATCH CULTURE

Definition

A form of culture in which a given volume of liquid medium is inoculated with cells (e.g. bacteria,unicellular algae) capable of growth in that medium, and the inoculated medium is incubated for an appropriate period of time. Cells growing under these conditions are exposed to a continually changing environment caused by the gradual consumption of nutrients and the accumulation of metabolic wastes, among other factors. The growth curve obtained by monitoring a batch culture commonly exhibits a sequence of four main phases of growth. In the lag phase, the growth rate (the rate of increase in cell numbers or biomass) is initially minimal but subsequently rises to a value dictated by the prevailing conditions (e.g., temperature, concentration of nutrients, etc.). The length of the lag phase is influenced by the cultural history of the cells in the inoculum. For example, if slowly dividing cells from a nutrient-poor environment are transferred to a nutrient-rich medium which can support a higher rate of growth, there is usually a relatively long lag phase during which time the cells become adapted to the new environment; during this period of adaptation the cells exhibit unbalanced growth. Subsequently, growth occurs at a new, higher rate permitted by the higher levels of nutrients. At the end of the lag phase, the cells enter the exponential (= logarithmic or log ) phase of growth in which, for a given organism, the growth rate is both constant and maximal for the particular growth conditions. In this phase there is an exponential increase in cell numbers and biomass; this type of growth is referred to as balanced growth. In the stationary phase the growth rate declines and eventually reaches zero. In the death phase the number of viable cells in the culture (maximal in the stationary phase) declines.

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