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Gum culture
1. Condition of the rearing pond: The shape and structure of the pond is basically the same, but the area is larger and deeper. The general specifications are 30-40 square meters, the depth of the pond is 70-80cm, the bottom type of the bottom of the pool, and the bottom of the sewage outlet is In the middle of the pool, use a perforated plastic pipe with a diameter of 100mm to cover the sewage outlet to prevent fish escape and slow water flow. In addition, because the gums sometimes expose the water, the pool wall should be 30-50cm deeper than the actual water depth. To be equipped with the appropriate water, gas and heating equipment. Normal water is used, often inflated, and the daily water exchange capacity is maintained at 10-20 times. In winter, it is suitable to keep the water temperature warm. 2, fry transport: Available special oxygenated plastic bags shipped. Each bag is 5 to 30cm long and has 300-500 tails. Put 1/2 of fresh seawater in the bag, charge oxygen 1/2, tie the bag, and put it into the carton. Each bag contains two bags. In the hot season, a small plastic bag of ice should be placed in the carton to cool down. In the case of temperatures below 26 °C can be continuous transport 25-30 hours, the survival rate of up to 96%. 3, stocking densities: Gill larvae must be 5cm or more in product specifications. The stocking density is closely related to the amount of water exchanged, and the amount of water changed is large and the density can be larger. When the water temperature is high, it requires a larger amount of water. If you can not increase the amount of water, then the density should be smaller. At the current breeding level, the stocking density is generally 5-15 kg/m2. In the high temperature quarter (above 25°C), change the water every two hours. 4, to develop water temperature: In the development of gums to pay special attention to water temperature, feeding the appropriate water temperature is 10-27 °C. When the water temperature is too high or too long can easily cause the death of the gums. In general, gums are less resistant to high temperatures than high temperatures. The wintering temperature is preferably kept above 10°C. After this winter, the gums are more robust. 5. Casting: The artificially cultivated gums are mainly fed with small pieces of fresh or frozen fish after being crushed. The daily feeding amount is about 1%-3% of the farmed fish weight, and it is shot twice a day. The amount of bait should be eaten on the same day, and it is advisable not to leave the bait. Because the fish’s food intake is related to fish size, water temperature, and water quality, it should be adjusted according to the actual situation. The frozen bait feeds and floats on the water, but after being frozen, it is scattered on the bottom of the pool, so be careful when feeding. , ensure that the food is eaten by the fish before it is dissolved. In addition, when the water temperature is too high or too low, or when the water quality is not good and the appetite is weak, you should not feed or feed less.
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