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CHANNEL CATFISH CULTURE

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Title: PowerPoint Presentation Author: Leonard Lovshin Last modified by: ckasper Created Date: 6/16/2000 3:20:20 PM Document presentation format: 35mm Slides – PowerPoint PPT presentation

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Title: CHANNEL CATFISH CULTURE


1
CHANNEL CATFISH CULTURE
2
Channel Catfish ( Ictalurus punctatus )
3
Native Range of Channel Catfish in the United
States
4
Food Habits
5
Preferred Habitat
Reservoirs and lakes
Rivers
6
Reproductive Live History
  • 1. Sexual maturity is reached in 2 to 3 years in
    the southeastern U. S.
  • 2. Spawning takes place in a cavity formed by
    rocks, logs or a hole in a lake or river bank.
  • 3. Preferred spawning water temperatures 21-29
    C, with optimal temperature 24 to 26 C.

7
Sexual behavior
  • 1. Males defend a territory/cavity.
  • 2. Female enters the cavity and spawns.
  • 3. Males incubate eggs and defend fry.
  • 4. Males can spawn with more than one female a
    season.

Spawning cavity
8
  • Catfish are grown in 4 to 10 ha earthen ponds
    with flat bottoms.

9
Catfish ponds are filled with either
Filtered surface water or rainfall
Well water
10
Spawning in captivity
  • 1. Stock adults 3 to 8 years old
  • 2. Stock 1 male to 2 females
  • 3. Stock 800 kg of brooders/ha

male
female
11
Spawning Containers
Ammo cans
Milk cans
float
Wooden box
Boxes in spawning pond
12
Spawning occurs during May and June in the
Southeastern U. S. Spawning cans are checked
every 2 to 3 days for spawns.
13
Hatching Shed
Eggs are transported to a hatching shed.
14
Eggs are placed in 5-mm square wire mesh baskets
suspended in a paddlewheel incubator.
15
Eggs hatch in 5 to 6 days at water temperatures
of 24 to 26 C.
16
Fry are placed in screen boxes or troughs for 7
to 14 days before stocking in ponds.
Fry are fed powdered feed.
Screen bottom boxes
Fiberglass trough
17
Fry are stocked at 150,000 to 250,000/ha and
grown for 5 months.
18
Fry are fed powdered, crumbled and pelleted
feeds.
19
Fingerlings are stocked in fattening ponds during
January to March. Stocking density is 15,000 to
20,000/ha.
20
Catfish feed is purchased by the bag or delivered
in bulk and stored in silos.
21
Floating pellets are distributed by a feed blower
mounted on a truck.
Floating pellets
corn wheat soybean
22
Feed amount is controlled by an electronic
scale located in the truck cab. Catfish are fed
what they will eat up to a maximum of 120
kg/ha/day.
23
Dissolved oxygen concentration is checked night
and day to assure that levels remain above 2
mg/l.
24
Electric (fixed) and tractor (mobile) powered
paddlewheels are used to increase D. O. levels.
No water exchange is practiced because ponds are
large and pumping water is costly.
25
Low D. O. can kill catfish within 1 or 2 hours.
26
Many diseases cause fish mortality.
27
Birds consume many fish in some regions.
Shoo !
Gas cannon to scare the birds
28
Catfish are removed from the pond with a
seine stored on a hydraulic reel powered by a
tractor.
29
Management systems used
  • Monoharvest
  • All catfish are removed from the pond when they
    reach 0.5 to 1.0 kg, 6 to 12 months from
    stocking.
  • Ponds are drained yearly.
  • 2. Multi-harvest
  • Only catfish larger than 0.5 kg are removed by
    partial seine harvest.
  • Ponds are restocked yearly with small catfish.
    Large and small catfish are in the pond together.
  • Ponds are partial harvested 2 to 3 times per
    year. Ponds are drained every 5 to 8 years.

30
Catfish are retained in a holding net overnight
to eliminate small catfish. Fish are crowded for
loading onto the transport truck. A crew of 5 can
load 15,000 kg of fish in 1 hour.
31
Catfish are weighed onto trucks taking the fish
to the processing factory. Each basket holds 900
kg of fish.
scale
32
Fish are checked for off-flavor 2 weeks, 1 day
and upon arrival at the processor. Off-flavor
fish are not harvested.
33
Catfish are weighed a second time upon arrival at
the processor. Fish arrive alive.
scale
34
Catfish are cleaned, filleted and frozen by the
processor.
35
Processed forms as a percentage of total catfish
processed
whole
1. Whole - 20 2. Pieces and bellies - 20 3.
Fillets - 60 Preservation method as a
percentage of total catfish processed 1. iced
- 20 2. frozen - 80
36
The catfish industry maintains a quality control
program to insure the consumer a fresh and
healthy product.
37
Principle farming states are located in the
Southeastern U. S.. Mississippi (MS) Alabama
(AL) and Arkansas (AR) produce 90 of the
farmed catfish.
Mississippi accounts for 65 of farmed catfish
38
The channel catfish industry developed in
the Southeast because
1. Popular food fish - market
2. Warm climate
3. Abundant water and clay soils
4. Close to major grain farming regions - cheap
fish feeds
39
Pond yield
4,000 to 7,000 kg/ha/year
40
Channel Catfish Growth in Live Weight Processed
and Average Price per Kilogram, 1970 - 2002
  •  
  • YEAR LIVE WEIGHT AVG. PRICE
  • PROCESSED, KG PER
    KG, US.
  • ------- ---------------------
    -----------------
  • 1970 2,609,545 0.75
  • 1975 7,336,363 1.09
  • 1980 21,120,000 1.50
  • 1985 87,098,181 1.58
  • 163,636,360 1.69
  • 203,130,000 1.74
  • 1999 271,194,000 1.63
  • 269,819,540 1.65
  • 271,141,272
    1.43
  • 2002 286,636,810 1.25
  • Price to farmer for fish delivered to the
    processing plant

41
EAT MORE CATFISH
42
(No Transcript)
43
The End
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