Brazilian adult fish breeding technology
Brazilian bran, also known as the South American salmon, is native to the Parana River system in southern Brazil and is the main freshwater economic fish in Brazil. It has the advantages of rapid growth, strong disease resistance, easy feeding, easy fishing, and less tender thorns.
First, the water body requirements
Each year from late April to early May, fish species (water temperature above 15°C), aquaculture area of ​​5-15 mu, water depth of 1.5-1.8 meters, adequate water, fresh water, and convenient drainage and drainage. Seedlings are suitable for 10-15 cm, and the fish species can be washed with 2-3% saline for 10-15 minutes. Its breeding mode has the following kinds:
Second, breeding mode
1. Set-up: Put 5-10 centimeters in Brazilian bream species, 250-300 mu in general, and raise about 500 fish species.
2, the main support: acres of stocking 30-50 grams of large-size species of fish 1000-1200 tail, equipped with turtles? 200 or so.
Third, daily management
Brazil is omnivorous, and it is advisable to feed 25-30% protein. It is advisable to adhere to the "four principles" and timely adjust the amount of bait. The daily amount of bait is 3-7% of the fish's body weight (according to the fish condition and water temperature). However, it is necessary to change the water regularly to maintain a water clarity of about 30cm. It is best to use lime twice a month to improve water quality.
Fourth, fish disease prevention
Brazilian juvenile adult larvae have a short breeding cycle and few diseases, and should be prevented first and supplemented by treatment. Trichlorfon is very sensitive to Brazilian cockroaches and it is best not to use it when fighting fish diseases.
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