FISH BREEDING TECHNIQUES AND HATCHERY MANAGEMENT

FISH BREEDING TECHNIQUES AND HATCHERY
MANAGEMENT

1.0 INTRODUCTION
Aquaculture sector is the only division of fisheries where its output can easily be
determined depending on the type of production system used. In Nigeria today,
aquaculture has provided economic, social and environmental benefits by
strengthening relationship between the youth and the Government, decreasing
dependence on Government for white collar job and also provides security to our
economy and culture. However, the increase in world production and change in diet
demand a large, more reliable and expensive supply of animal protein and fish
products. According to FAO report in 2002, Nigeria requires two million metric
tones of fish annually for consumption but all fishery activity in Nigeria including
industrial fishery, artisanal fishing and aquaculture can only produce 2 percent (2%)
of this requirement.
The aquaculture industry in spite of recorded successes has various hindering
problems which include inadequate fish fingerlings for farmers. This has
necessitated the Nigerian Institute for Oceanography and Marine Research, Sapele
to organize a workshop; on the Technology of Fish Fingerlings (Fish Seed)
production; for farmers, so that there would be enough catfish fingerlings for table
size fish production. Meanwhile, this handout is specially designed for catfish
fingerlings production and its management.
Subsequent workshop will look into other aspects of aquaculture.

Comments

Feeding fish

Many fish feed companies keep a good listening ear to suggestions, feedbacks that my company furnishes them with including pricing. We can't say we are alone but God is good always n that informs some allowing us to check out there feeds Let's start with foreign feeds. Biomars, coppens and Ziegler fishfeed are feeds that we experimented on during this period. Specifically we tested them on our fish both in earthern ponds n concrete tanks. The results were quite surprising because we understood that there is a difference between "best before " $ "expired " Most imported feeds are carrying best before doesn't mean that after d date feed is not fit for fish but it simply means it's quality has reduced. Now here is d twist. Best before in concrete/tarpaulin tank fish culture. We found out that after the best before date up-to 6minths the feeds still had good aroma, colour and fish still ate it very well and developed. The difference was not th...

FISH SEED PROPAGATION

2.0 FISH SEED PROPAGATION What is fish seed? Fish seeds are young fish (Larvae, fry and fingerlings) that grow to become table or parent fishes. What is Seed Propagation? This is the science of assisting parent fish to multiply and have descendants. Method of fish Seed Propagation Fish seed propagation could be by:  Natural spawning  Induced spawning without hormone treatment  Hormone induced natural spawning  Artificial spawning) making parent fish to produce off spring willingly in a controlled environment). Why Artificial Spawning?  Fish seed collection from the wild is seasonal and unpredictable.  By manipulation of hormonal and environmental factors, fish seeds can be produced un-interrupted all year round.  The disease and genetic history of wild fish are unknown and as such wild seed are less tolerant to changing physical and chemical conditions in ponds than the hatchery-bred.  Health history and genetic history of hatchery-bred fish could be traced ...

Fish feed formulating 2

Starting from 1.The pulverizer Materials like maize,,,soy products,,,,or any other materials that isn't easily digested by monogastric are to be pulverized using mesh size of about 1mm,,,most feed mill won't use such mesh as it tends to slow down the production compared to bigger size mesh,,,, Improperly pulverized maize or soya meal,toasted soya,,ful fat soya,wheat,, are mostly wasted when included in the ratio as about 50% or more won't be digested by catfish But each feed ingredient also has its digestibility % Each has distinct effects on the quality of the end product Yes,,, feed material digestibility % can be increased when properly processed,,,for example finely pulverized maize that is steamed before pellets won't have digestibility % like crushed maize At the mixing stage... All materials most be mixed evenly so as to have same feed taste,,quality and colour in a certain production Feed additives are one of the major secret that's giving most i...

Agro farming

Search This Blog