Technical communication

Taming method of forage mandarin fish

2022, can be said to be a year of mature feed mandarin fish technology. With the unremitting efforts of aquaculture industry in Guangdong in the past few years, replacing live bait fish in traditional mandarin fish farming with artificial compound feed can greatly reduce the cost of aquaculture and increase the net profit of mandarin fish farming. At the same time, the incidence of pests and diseases of mandarin fish can also be reduced.

The mandarin fish feed has the habit of top water, so the mandarin fish taming should be set up in the pond or indoor breeding pond flushing device. The method of opening the pipe can be used to flush the water with a water pump to form water flow and sound. Make the mandarin fish gradually form a conditioned reflex. At the same time, the mandarin fish's natural tendency is to hide in the shadows and attack other fish. Therefore, the transparency of the water body is best not Want too much. If it is the taming material in the outer pond, it can be operated in the early stage of cultivating algae. Increase the opacity of the water body. It also increases the dissolved oxygen in the water.The mandarin fish can distinguish the movement status and general shape of the bait fish, so as to prey on the bait fish by surprise. The lateral canal system of the head of the mandarin fish has complex branches, the diameter of the lateral canal and the nerve colliculus are large around the eye, and the top of some lateral canals is not completely ossified or not ossified, so the mandarin fish is sensitive to vibration stimulation, so that the mandarin fish can still eat normally when the visual function is not very good. salmon The oropharyngeal cavity of fish has taste buds, which are suitable for the final recognition of food entering the mouth. If the feed doesn't taste right, it will spit it out.

The tamer of mandarin fish artificial feed is divided into three steps

1. Train mandarin fish to swim to the surface to grab live bait fish under flushing conditions.

2. When it gets used to it, it will gradually reduce the feeding amount from the fourth day to domesticate the mandarin fish to form a fast and accurate feeding reaction, which will take about 7 days. After a good feeding response has been established, some chilled bait can be added to the live feed fishFeeding. Before feeding, a small amount of trial feeding, until the surface of the water to eat, and then a large number of feeding. The dead fish should be fed slowly in order to prolong the falling time of the dead fish so that the mandarin fish can fully feed on the chilled fish. Then slowly and gradually increase the proportion of chilled bait. 3. When the mandarin fish has formed a good feeding reaction, it is necessary to completely switch to cold bait fish, which takes about 15 to 16 days. Finally, surimi diet was added to the chilled bait fish, and the fish content was gradually reduced, and finally the artificial compound diet was completely transferred.

3.Due to the effect of flushing, the artificial feed moves at the moment when it falls into the water, which meets the sensory requirements of the mandarin fish. Therefore, the purpose of training the mandarin fish to swim to the surface of the water to grab the fallen food can be achieved. After domestication, the mandarin fish can also feed well on the falling food in the middle and lower layers. Although the mandarin fish generally do not eat the artificial feed at the bottom of the fish pond, but because of artificial feeding

The food is in a state of motion in the process of falling into the water. As long as the mandarin fish has actively approached and tracked the food when the food sank to the bottom, the food is still in relative motion. Therefore, as long as the mandarin fish is trained to attack the food without stopping, the mandarin fish can eat the relatively stationary food in motion.Taming the mandarin fish requires patience and skill. At present, there is no guarantee that the taming success rate of mandarin fish is 100%. Because of genetic limitations. It can only maintain a certain taming success rate. There will always be some members of the group who will not eat until they starve to death. We should respond with a sense of equanimity. Feed nutrition, we should choose a reputation of brand feed. Pay attention to the addition of dynamic protection supplies. Can be Multi-dimensional and liver protection products are used for mixing. Reduce the stress of mandarinfish to the fish body at the beginning of feed acclimation. In terms of water quality, we must ensure that the dissolved oxygen of water is sufficient, the PH is stable, and the ammonia nitrogen and nitrite are kept within a reasonable range.