There are a few simple features which you must ensure prior to carp aquaculture.
1. Pond bottom and water quality
2. Juvenile stocking density and survival
3. Feeding
4. FCR
1. Fertilisation is a crucial feature of aquaculture since it ensure high quality plankton development which aids in carp feed conversion.
A. Ensure the installation of an underground water pump which will assist in 30% water exchange once in 28 days. What is the present source of fresh water? Water should be pumped into the pond from a depth of 40 feet.
pH of water for carp should be around 6.8 to 7.3
B. Pond area needs to be prepped well prior to addition of water. Fertilizers to be mixed for pond bottom construction been detailed below:
Urea: 9 kg per acre
Single super phosphate: 9 kg per acre
Quick Lime: 360 kg per acre
ZeroTox: 40 kg per acre
AquaCyclo: 5 kg per hectare
After mixing and prep of pond bottom, one must ensure the water height should be a constant 1 meter. First 20% water is filled, then followed by the remaining after 2 days.
For an existing pond with foreign eggs issue, nothing much can be done at this point. For future, your aqua pond must be dried out once every winter season for preparing. That way to control unwanted seeds.
During pond construction all holes in the pond bottom must be sealed and bleaching powder is recommended to clear out all foreign eggs and disease. Bleaching powder (>33% chlorine) @ 200 kg per acre.
Once all water has been pumped in, allow to stay and fertilize for 10 days. After this, your pond is ready for the carp fingerlings.
2. Juveniles must be a combination of Rahu, Catla and Mrigala. The stocking density of 1/sq.m, 1/sq.m, 0.5/sq.m. The stocking density can be a maximum of 3 times of given values, not exceeding.
Individual fingerlings of body weight 40 to 60 grams recommended.
3. Feed optimization is a crucial step. Start the culture with 10% of total biomass, divided equally into 4 portions fed daily. To ensure proper feeding, use floating feeds, 32% protein, 1 mm pellet size. Construct a netted nylon tent with an open bottom. The bottom part of the net should be dipped 6 inches to 1 foot below water surface. The top send needs to be constructed on a bamboo to create a conical or cylindrical shape. The net must be installed near the bank of the pond by fastening it to a bamboo horizontal pole which is in turn tied to a vertical pole on the dyke. You must add the feed into this feeding net. Since the bottom of the net is submerged in water, feed cannot float away. And you can monitor how much feed is actually been consumed. Carp feeding time is 30 mins. For eg. if the total fish biomass in the pond is 100 kg. Then you need to feed 10 kg feed per day. This is 2.5 kg per feeding time. So you add the 2.5 kg in to the feeding tray and observe how much is being actually consumed. If you see they are actually eating 2 kg in 30 mins, then next time to give them 2 kg. Floating feed helps you to monitor the volume of feed being consumed. Remove feed not consumed from the feeding net after 30 mins.
You should change the feeding programme once every 2 weeks after checking length and weight of at least 25 fishes once a fortnight. The philosophy is to gradually reduce feed quantity with time. Feed should always be used as supplement, since carp will feed on plankton. Contact us for more info on this feature.
We recommend you to use Matsya360 at 1.5 lites per acre, once in 3 weeks, 30 days from culture start. This should be combined with AquaCyclo used at 1 kg per hectare once in 3 weeks. These are probiotics which will ensure proper cycling of ammonia and sulphides along with plankton balance, reduced FCR, increased D.O. with pond bottom quality.
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