Home Agriculture Farming What Experts Share About Perch Farming Techniques

What Experts Share About Perch Farming Techniques

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What Experts Share About Perch Farming Techniques

Field perch is a type of fish that lives naturally and is common in the Mekong Delta, adapts well to bad water environment; Fish spawned in large quantities, with good meat quality, favored by the market. This is also the reason why the farming model of perch is increasingly being expanded. To get the highest yield of perch per crop. Farmers, do not rush to give up through farming techniques of perch shared in this post.

Farming technique of perch

The best pond for farming perch is 500 – 1,000 m2, near a clean water source for easy water change. The pond banks need to be surrounded by nets to protect and avoid fish loss. The pond bottom is flat and slopes towards the drain for easy fish harvesting. The height of the pond water level is about 1.2 – 2 m.

The optimal size of the perch pond is from 500-1000m2 .
The optimal size of the perch pond is from 500-1000m2 .

For old ponds: 7-10 days before stocking fish, the water must be drained, cleaned of vegetation around the pond, dredging the pond bottom, filling holes around the pond. For new ponds, water must be taken to soak and discharge alum many times.

Apply lime 5 – 10 kg / 100 m2 (pond in alum area 10 – 20 kg / 100 m2), the effect of lime is to kill bacteria, kill trash fish, stabilize pH. increase the effectiveness of lime. Dry the pond bottom for 3-5 days. For ponds that do not have the conditions to drain the water, and want to kill all trash fish, bad fish use the roots of fish medicine or a powdered product containing Rotenon to kill trash fish.

Take water into the pond through a fine mesh filter bag to prevent trash fish, predators, and fish eggs from entering the pond. Checking for satisfactory environmental factors, fish can be stocked such as pH = 6.5 – 8.5; oxygen = 3 – 8 mg/l, water temperature 28 – 300C.

Stocking

For field perch, the farming results depend greatly on the quality of the fingerlings. When choosing to buy fingerlings, it is necessary to pay attention to the following criteria: fish with beautiful bright colors, agile swimming, no deformity, skin abrasions, missing themselves; fingerlings before being sold must be trained in ponds, wide and clear, and starved. Stocking density is about 15-25 fish/m2.

When bringing the fingerlings, you should not immediately release the fish into the pond, but you must soak the bag for the temperature inside and outside the pond to balance before opening the bag for the fish to swim out slowly. To prevent disease for fish, it is recommended to bathe the fingerlings in 2-3% salt water for 5-10 minutes.

Breeding copper perch should choose the same size seed
Breeding copper perch should choose the same size seed

Feed, care, manage

With the form of industrial farming, fish can be fed pellets throughout the farming process or homemade food from animal by-products. When the fish is young, feed with protein content over 30%, feed amount 5 – 7% total weight of fish, feed 3-4 times/day. When the fish is big, the protein content in the food is gradually reduced but must be above 25%, the amount of feed 2 – 3% of the total weight of the fish; feed 2 times/day.

However, the amount of food increased or decreased depending on the level of use of the fish (especially on rainy days, fish should reduce food). If the food is well managed, the water environment will be stable. Periodically check and measure environmental factors to take timely remedial measures. Periodically change about 30% of the water in the pond. After changing the water, use lime and salt (in turn) to mix the water evenly across the pond to prevent fish diseases. When raising about 4-5 months, the fish can reach about 10 fish/kg and can be sold.

Industrial farmed perch can be fed pellets
Industrial farmed perch can be fed pellets

It is advisable to raise with artificial breeds and especially to control the origin of the breed. When the fry have been reared for 40-60 days, it is possible to filter the cages so that the fish are relatively the same size and thereby select a school of fish with a high percentage of female fish to raise. Thus, the fish will grow quickly and the efficiency will be high (because in the school of fingerlings, about 50% are female, 50% are male; female fish are usually larger in size than male fish, so when filtering the cage, the female fish will stay in the cage and select these females to raise. If the breeder does not know the origin of the fingerlings when buying, it is easy to be mistakenly bought as this cage-filtered male).

Note

+ The feed must ensure protein content according to each stage of fish development and feed continuously with sufficient quantity because if the fish is not fed enough quality and the fish quantity will be slow to grow, prolong the farming time and be ineffective.

+ The food of field perch has a very high protein content, so the pond water gets dirty very quickly; Therefore, it is possible to put together about 10% of the zebrafish because the zebrafish eat algae or plant water spinach or water hyacinth in a corner of the pond (1/10 of the pond surface area) to absorb nutrients, thus partly helping. Maintain good quality of pond water.

+ In the change of seasons and in the rainy season, once every 2 weeks, lime is used to spread around the pond, and at the same time, soak the lime to take that lime water and sprinkle it all over the pond to stabilize pH and prevent fish diseases (the amount of lime soaked is 1-3 kg/100 m3 of water).

With diseased perch, it needs to be isolated for treatment
With diseased perch, it needs to be isolated for treatment

+ During the farming process, it is important to keep the pond water very good to prevent diseases for fish, especially in the middle of the growing season because at this time, the amount of waste from fish, excess food, dead algae layers accumulate. accumulate at the bottom of the pond a lot. Therefore, periodically change pond water, use pond bottom treatment agents such as Zeolite or biological products.

If farmers carefully study the technical issues of farming perch above, they will contribute to the success of their farming. Wish farmers success with this model of farming perch.

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