Due to the high consumption of carp during transportation and the delicateness of the fish, the shipping density is lower than other fish species.
First, the species of transport
1. Transportation methods: (1) Fishing rods (fish buckets), canvas buckets transport: This mode of transportation is mostly suitable for short-distance transportation.
When transporting summer fish species, it can hold 10-15 tails per kilogram of water, depending on the temperature; transport large species of fish (30-50 grams of tail fish), can hold 5-10 tails per kilogram of water. When using this method to transport, the vibration of the water can not stop, the car stops people hitting the water, the car looks at the water and finds that when the fish activity is abnormal, it is necessary to add water or change the water in time.
(2) Oxygen transport in plastic bags: This method is suitable for long-distance transportation. At a water temperature of 20-25°C, 300 bags of carp summer flowers can be maintained for 18-20 hours.
2, matters needing attention
(1) Selection of high quality seedlings: The body mass of the sturgeon directly affects the survival rate of transportation. The body of the fish is thin and sick. It has poor ability to tolerate oxygen deficiency, high temperature and poor water quality, and cannot withstand long-distance transportation. To this end, we should select the seeds that are neat, robust, non-invasive, and lively.
(2) Before the departure, the net should be exercised: intensive training should be conducted 1-2 days before the shipment of squid. The method is similar to the conventional grazing net exercise to reduce the secretion of mucus and the excretion of feces during transportation, thereby reducing water quality deterioration. Impact.
(3) Adjusting water temperature: When transporting summer fish species, the temperature is generally higher. To increase the survival rate of transport, ice can be used to reduce the temperature, but the water temperature should not be too low, and the temperature can be controlled at about 20°C.
(4) Control of water quality and water quantity: When transported by rods and canvas barrels, the water quality is better controlled. When the floating head is found, new water is replaced in time. However, the amount of water that can be changed once cannot exceed 2/3 of the original amount of water. Change the water to be lighter and operate carefully. The difference between the water temperature and the original water temperature should not exceed 5°C. In addition, dead fish in containers such as oysters and barrels should be promptly removed to avoid damaging the water quality. When the plastic bag is transported by oxygen, the transportation water requires fresh water, non-toxic, high dissolved oxygen, and low organic content. The amount of water in the bag is 2/5-1/2 of the total bag volume.
(5) Ensure sufficient oxygen: transport by plastic bag, oxygenation is appropriate for the bag surface full and elastic. The amount of oxygenated air is 60-70% of that on the ground. This prevents the high air pressure and oxygen in the bag from bursting.
Second, adult fish transportation
Bulk caravans often use live fish carts. Live fish vehicles have the functions of oxygenation, sewage discharge, and water exchange. They have a large volume of transportation and low cost. The ratio of carp and water shipped is 1:3-4. Long-distance transport of small quantities, often using rubber bags oxygenation. The shipping method is: the bag holding water should be controlled at 1/3 volume, and the amount of fish is 1/4 of the amount of water.