Aquaculture Aquaculture Objectives Explain How definitions are derived

Aquaculture

Aquaculture �Objectives �Explain How definitions are derived �Compare/contrast aquaculture and livestock production �Compare aquaculture with fisheries �List examples of aquatic crops �List and describe the functions of aquaculture

Aquaculture VS Livestock cont. What are the characteristics of: �Aquaculture �Occurs in Water �Limited by O 2 �Limited by water �Many animals and crops �Uses wild organisms �Livestock �Occurs on land �Limited by water �Many Plants and crops �Domesticated organisms

Aquaculture VS Livestock �Aquaculture � 2 to 1 feed conversion �Move freely in environment �Livestock � 3 -6 to 1 feed conversion �More energy used to counter gravity.

Aquaculture VS Fisheries �Aquaculture �Controlled Culture �Individuals own crop �Fisheries �Hunters/gatherers �Open access of people to crop

Definition of Aquaculture �Science, art and business of cultivating aquatic plants and animals. �Science implies objectivity �Art implies subjectivity �Business implies making money �Cultivating implies caring for the crop �Aquatic describes where organisms grow

Functions of Aquaculture �Hatchery- reproduce young �Growout- grow young to market size �Marketing- deliver aquacrops to consumer

Role of Hatcheries �Produce seed (reproduce) �Maintain parental stock (brood fish) �Consider feed and growth needs to produce quality seed

Growout Facilities �Produce aquacrop from young �Used for human food, animal feed, pets and recreation �May Use: �Ponds �Tanks �Raceways �Cages �Vats �Pens

Growout Facilities �Intensive System �High Population density of aquacrop �Require careful management �Examples include tanks raceways and ponds �Extensive systems �Lower population density �Different approach to management used �Examples include ponds with low stocking rates and natural streams and lakes.

Factors in a growout facility �Species selection �Water quality �Water oxygenation �Disease prevention � Feeding �Regulation �Use of theraputents �Discharge of effluents/ environmental concern

Ponds

Ponds

Net Pens

Cage

Cage Feeding Tilapia

Raceways Idaho

Raceways

Indoor Recirculation System

Harvesting �Involves capturing crop �Types of harvesting: �Topping(partial) �Total

Marketing Functions �Assembling �Grading �Hauling �Processing �Packaging �Storing �Wholesaling �Retailing �Advertising �Change of ownership

Available Markets �Personal use �Recreation �Food �Sell �Processors �Live haulers �Fee fishing �Direct to restaurant �Aquarist trade

Type of Processing: Change the form of. �Minimal- Little change in product form examples �Medium- considerable change in the form examples �Value Addedexamples �Easy to prepare forms �Attractive packaging