1. by having a proper bio mass control. I.e knowing the exact number of fish and exact mean weight of the fish in each pond.
2. sort the fish at regular intervals to keep the size range in each pond at a minimum
you can do it by increasing natural of live food items to your ponds
You may use several additive feed which specially made with some materials, ie. natural plants, phytoplankton ect. to your pond.
Encourage conditions that favor more live food production in the pond
make your feed high in energy and if possible use highly digestible ingredients.
You can also go for alternate feeding of low and high protein diets. This can save cost on aquafeed to some extent
Dear,
I think you can minimize the feed input to a very limited extent because you put the condition without hampering the growth. You know fish meal is the main quality protein sources in the aquaculture industry all over the Globe which is costly as well. Again if you practice standard post stocking management, you can try to fertilize the pond with organic and inorganic fertilizer which boost up the phyto as well as zooplankton however be careful concerning the water quality (It is better to have the facility to water exchange). These are some common practice particularly in Bangladesh.
Again I put here a practical experience regarding poly culture of Pangus and Chinese carps where I can reduce considerable amount of feed costs by following (these may not suitable for every one)
1. Maintain feeding regime as (provide feed for six days then off in seventh day which facilitate reduces the excess wastes in the pond) (additionally I stock 10 local Heteropteneus fossilis (Shingi)/Clarias batrachus (Magur) per decimal as scavenger feeder).
2. I use raw Soyabean seed instead of de-hulled extracted soyabena from oil indusrty.
Please see the following doc.
Article Impacts of goat and sheep manures alone and in combination w...
Dear you can also follow the following articles which may be helpful for you.
Article Influence of dietary lipid/protein ratio on survival, growth...
Article Dietary probiotic and prebiotics improved food acceptability...
Dear, Hope by reading the article you will certainly got some helpful information.
https://www.researchgate.net/publication/255925755_Short-term_periodic_feed_deprivation_in_Labeo_rohita_fingerlings_Effect_on_the_activities_of_digestive_metabolic_and_anti-oxidative_enzymes
Article Short-term periodic feed deprivation in Labeo rohita fingerl...
I agree with MM Hossain. There are good number of publications in India and abroad on 'periodic feed deprivation' or 'alternate day feeding' or 'feeding 3 days-a-week', which do not affect growth, but feed input is drastically reduced. More research to be done in field to strengthen these ideas, which will benefit the entrepreneurs and the ecosystem also.
Dear Dipesh Debnath,
Thank you very much and nice to hearing that you are agree with my opinion so far.
I also have a publication on 'alternate feeding' applied on milkfish. We termed it "cyclic feeding' It is attached here.
In carpculture i was able 2 reduce supl feed8_9k/ha from 12_13k/h a just by increasing feedig freqency/d but reducing eqhired feed % /dfrm3to 1.5% bod wt anx getting smilr rate of fizh pfoduction@8-9k/ha.
Another wy iz to use feed dispensers which can be dezigned / modified asper fishez reared and their feeding habits.
Adopting it.cost of production reduce n improve water quality..end product more vrowth nproduction
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