Catfish Production

(1)

Catfish Production

 most widely grown

production fish in the US

 smooth skin with no scales

(2)

Catfish Production

 nearly 100,000 metric tons

produced each year at a value of $380 million

 survive on lower levels of

dissolved oxygen than most

other production fish

(3)

Channel Catfish

 mose widely used

 Mississippi leads in channel cat production

 raised in ponds less than 6

feet deep

(4)

Egg production

 female catfish lay eggs in nests that are provided by the producer

 eggs are collected and

placed in tanks or jars in the

hatchery

(5)

Egg production

 eggs are moved back and

forth by use of paddles in a wave-like action

 fish eggs must be turned

just as bird eggs are in order

to hatch

(6)

Egg production



When small fish hatch (called fry) they are placed in tanks until

they are about two inches long (then called fingerlings)



fingerlings are transferred into a pond or huge tank until they

weigh two pounds

(7)

Egg production

 fish are fed twice a day

 fish are harvested using seines (large nets)

 another method of raising

production fish is using large

submerged cages

(8)

Cages

 advantages

 fish may be inspected more closely

 less feed is wasted

 predator problems are solved

 harvesting is easier

(9)

Tilapia Production

 native to Africa

 resemble our native sunfish

 reproduce prolifically

 grow rapidly

(10)

Tilapia Production

 can survive high temp, low oxygen and overcrowded

conditions

 cannot survive in water

below 50 degrees

(11)

Trout Production

 considered the best tasting fish

 high percentage of their body is edible meat

 cold water fish

(12)

Trout Production

 most trout are raised in

concrete raceways where the water is constantly moving

 moving water keeps the water

cooler and keeps the dissolved

oxygen level higher

(13)

Trout Production

 disease control is easier in

this environment

(14)

Salmon Production

 cold water fish

 raised in floating net cages that are anchored in bays of oceans

 usually takes 18-24 months to finish out the fish

 harvested at 9-11 pounds

(15)

Salmon Production

 very meaty fish with a favorable taste

 most salmon that is

consumed is caught in the

ocean rather than raised in

captivity

(16)

Sport fishing

 hatcheries stock lakes and streams

 recreational fishing creates other industry

 fishing tackle stores

 boats

(17)

Sport fishing

 guide services

 restaurant, hotel and other

stores near the water

(18)

Bullfrog Production

 frog legs are considered a gourmet food

 most frogs are raised in the wild

 demand for frogs far exceed

the supply

(19)

Bullfrog Production

 attempts to raise bullfrogs in captivity have been

unsuccessful for many reasons

 1. Animals are territorial

 2. Frogs only eat food that is

alive, no processed food

(20)

Bullfrog Production

 3. Predators (raccoons and snakes)

 research is still being done to find a way to raise

bullfrogs for production

purposes

(21)

Crayfish

 Craw Dads, Crawfish, or Mud Bugs

 Louisiana leads in crawfish production

 1000 pounds per acre can

be produced

(22)

Crayfish

 raised in large earthen ponds that are less than two feet

deep

 can be grown along with crops such as rice

 crawfish are omnivorous (they

eat both plants and animals)

(23)

Crayfish

 main diet is decaying

plants, worms and insect

larvae

(24)

Alligator Production

 alligators were hunted to a point near extinction

 hides are very valuable

 conservation efforts have

brought the population back

(25)

Alligator Production

 alligators are harvested at the age of 26 months of age and five to six feet long

 hides are sold to make bags, boots, shoes and various

other leather type goods

(26)

Alligator Production

 skulls and teeth are also a hot commodity

 meat is very tasty and is

sold to restaurants

(27)

Alligator Production

 process of raising alligators

 females build nests from

vegetation and mud and lay

an average of 40 eggs each

time

(28)

Alligator Production

 producers remove the eggs

from the nest to limit the loss to predators

 eggs are marked so that the

proper end will be in the right position to ensure a good

hatch

(29)

Alligator Production

 eggs are wrapped in hay and are kept moist

 the hay contains a bacteria that breaks down the shell

allowing the babies to break

through the shell

(30)

Alligator Production

 temperature is critical to determining the sex of the newborn alligator

 temps above 93 degrees

produce all males

(31)

Alligator Production

 temps below 86 degrees produce all females

 temp of 88 degrees produces an even mixture

 alligators are fed fish,

products from poultry industry

(32)

Alligator Production

 carcasses of animals that

are slaughtered for their fur

only