Facts about catfish production,management and marketing (ONLOOKER)
More On Facts about catfish production,management and marketing (ONLOOKER)
The favoured catfish species in Nigeria aquaculture include: Clarias gariepinus, Heterobranchus bidorsalis, Clarias X Heterobranchus hybrid (Heteroclarias) and Clarias nigrodigitatus. Heterobranchus sp is the more commonly cultured fish in the South Eastern parts of Nigeria.
Despite the popularity of the
African catfish and its great market potentials, the production is still basically
at subsistence level due majorly to inadequate
availability of seed for stocking and feed problems. In Europe, about 75% of Clarias fingerling demands are supplied by a few producers.
In Nigeria however, the fingerlings supplied from both the government and privately owned hatcheries are not enough to meet the catfish farmers’ fingerling demands. Artificial propagation of C. gariepinus is now carried out in hatcheries with hormonal induction. Farmers have found the homoplastic pituitary gland suspension cheaper, practical and more highly reliable than the imported synthetic hormonal analogues.
More info on Facts about catfish production,
The C. gariepinus brood stock weight used for artificial breeding ranges between 0.3kg and 2kg (Olaleye, 2005). Despite the breakthrough with use of hormone in induced spawning; fry survival is still beset with a number of biotic and abiotic factors. The biotic factors include cannibalism, heavy predation by frogs/aquatic insects and the abiotic factors include water temperature, dissolved oxygen (>4.5mg/L-1),
levels of ammonia. During the first week after stocking, the most critical
factor for the successful nursing of the catfish larvae is the availability of zooplankton.
Feeds and feeding of the larvae fry and fingerlings of the catfishes have been
most studied and shown to influence the growth and survival of the fish.
Studies have revealed that live zooplankton is the preferred larval food. Many
smallholdings merely rear larvae to fingerling size in organically fertilized
ponds at a density of between 30-1000 larvae/ m2. Fingerlings are stocked into rearing
ponds at a rate of 50-75 fish/m3 under good management.
THE CULTURE SYSTEM
dragonfly and other predatory insects from breeding in the ponds. Poly-culture of Clarias gariepinus and Tilapia species is practiced. A poly-culture of Clarias gariepinus and Oreochromis niloticus, integrated with poultry with some supplementary feeding had been shown to be viable.
FEED AND FEEDING:
documented and these are arginnie, methionine and lysine. In order to formulate and compound aqua feeds that will meet the nutrient requirements of the catfish at affordable cost, several conventional and non-conventional animal by-products and plant residues have been tested to substitute or replace fishmeal.Feeding development has moved from the use of single ingredient, broadcasting un- pelleted meal to pelleting and in fact the use of pelleted floating feed which has made a big difference to aquaculture development in Nigeria as C. gariepinus is being raised to maturity within 6 months.
Culture System Modification On Facts About Catfish Production
fish in burrow pits, abandoned minefields and in earthen ponds on extensive production
system. The introduction of concrete tanks allows for manageable pond size and
modification of the environment through a water flow-through system and supplementary
feeding thus allowing for higher fish yield. The advent of the indoor water re-
circulatory system (WRS) has ushered in a new prospect for aquaculture. The
introduction of WRS has created a turning point in the production of catfish in
of fish supply in Nigeria hangs on its development and culture. Recent trends
all over the world, point to a decline in landing from capture fisheries, an
indicator that fish stocks have approached or even exceeded the point of
maximum sustainable yield. Aquaculture therefore remains the only viable alternative
for increasing fish production in order to meet the protein need of the people.
fish species caught in the year 2000, catfishes were more abundant next to
Tilapia. (Table 2). FAO (1993) reported that 27,488MT of catfishes produced
in1990 were consumed locally. This implies that there is still great need for
higher production for both local and international markets. Interested in fish
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- Title Page
- Table of Content
Chapter One: Introduction
is catfish different from other fishes?
1.3 Fish classification
- Lastly, Morphology
- Giant Catfish of the World
- Scientific classification
- Firstly, Catfish Family
- Second Larval production
- The culture system
- Feed and Feeding
- Also, Hybridization of catfish
- Culture system modification
- Lastly, Prospect and problems of cultured fish
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- Firstly, Pond
- standard features of a fish pond
- Types of pond
- Likewise, Earthen (Natural) Pond
- Concrete Pond
- Tarpaulin/Plastic/Mobile Pond
- Also, Step in fish Pond establishment
- Important of liming
- Fertilizing a pond
- Lastly, Fish Pond management
- Fish Stocking
- Stocking of fish can take the form of mono/poly-culture
- channel catfish
- Species of channel catfish
- Life cycle of channel catfish
- The Electric Catfish
- Feeding in electric catfish
- Firing in electric fish
- Finally, Importance tips in managing electric catfish
- Firstly, African Giant catfish
- Secondly, Habits of African catfish in the wide
- Natural spawning in the wide
- Rearing of African giant catfish
- Hatching techniques in catfish
- materials needed for (hatching) spawning
- Prerequisite for (Hatching) spawning in catfish
- Also, Steps in (hatching) spawning
- Some reasons why spawning (Hatching) falls
- Characteristics of catfish stages
- Lastly, Transportation of catfish
- Firstly, Fish Management
- How to identify oxygen Depletion in ponds
- Questions most people ask about catfish management
- Fish parasite and Diseases
- Fish Disease
- Causes of Diseases
- Lastly, Types of Disease
- Firstly, fish preservation
- Method of fish preservation
- Fish salting
- Drying and Dehydration
- Also, fish smoking
- How to smoke fish
- How to make millions from catfish production
- Marketing strategy
- How to sustain millions in catfish business
List of figures
Firstly, fig.1.1 Labeled diagram of a typical tilapia fish
Secondly, fig 1.2 labeled diagram of a typical catfish
Thirdly, fig 1.3 Labeled diagram of a typical external anatomy of a tilapia fish
Fig 1.4 Labeled diagram of a typical external anatomy of a carpio cyprisnus
Also, fig 1.5 Labeled diagram of a typical internal anatomy of a tilapia fish
Similarly, fig 1.6 Typical example of catfish
Likewise, fig 8.1 Diagram of electric catfish organs
Likewise, fig 9.1 claries gariepinus sample
Fig 9.2 Heterobranchus Bidorsal Sample
Also, fig 10.1 Diagram on how to inject the catfish
Similarly, fig 10.2 Diagram on how to extract the milt (sperm) from catfish
Lastly, fig 10/3 Diagram on how to strip off eggs from catfish and
to fertilize them
List of tables
Firstly, table 2.1 scientific classification of catfish
Table 3.1 catfish families
Furthermore, table 5.1 table showing water retention in soil
Table 8.1 scientific classification of electric catfish
Also, table 9.1 African Giant catfish
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