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lobster traps breeding adult fish stocking density of 20 to 30 / m

Data:2013/10/23 0:14:22


Fish stocking should take four aspects: First, species Yiyou. Second, the specification should be large. Third density appropriate. Fourth, pay attention to methods.
(A), the source species
Selection of the desired grass seed breeding pond netting or lobster traps farmed fish, and the best selection of lobster traps cultivated species, species to adapt quickly to the environment is conducive to growth, but also improve the survival rate of breeding, you can not use a dry pond fish species, to avoid bruising the fish. Some farmers in order to advance into the fish time to market and put Specifications 500-1000g / tail of two adult grass carp species.
(Two), fish quality
Requirements infirmity, disease no injury, no deformity, specifications and tidy, lively action, clustering and strong, scaly fin intact an age of fish.
(Three), stocking density
lobster traps breeding adult fish stocking density of 20 to 30 / m 2 (into the box size 250 grams or more grass species, out of the box size 2500 grams or more), with a weight of bighead carp fingerlings 20-30 tail.
(Four), fingerlings into the box before the lobster traps treatment
Species into the box before 10-15 days to lobster traps set up and put into the water until the lobster traps attached to a certain species of algae after stocking, reducing lobster traps for fish friction.
(Five), fish quarantine and disinfection
Species (refer to 10cm above specifications) into the box should be vaccinated (ie, fishing needles), the use of grass carp dorsal vaccine injections, was calculated according to the size of fish is generally used 0.2-0.5 ml / tail. Meanwhile, the fish into the tank should be disinfected, medication type, concentration and method refer to the following table.
Species disinfection medication type, concentration and method table
Drug Concentration (%) Time (min) Method
Salt 3% -5% 10-15 Immersion
(Six), fish stocking requirements
The same lobster traps requires a place full of fish, the same specifications.
(Seven), stocking time
BREEDING ADULT FISH STOCKING IN LATE FALL OR EARLY WINTER TIME NORMALLY, THE WATER TEMPERATURE AT 15 ○ C ABOUT WHEN STOCKING BETTER, NO LATER THAN THE END OF MARCH.
(EIGHT), FISH STOCKING METHODS
TRANSPORTATION BACK FISH, LOBSTER PREPARED TO PUT TRAPS INSIDE SURFACE OF THE PLASTIC DISH, STIR BAGGING OXYGENATED WATER TO BE TRANSPORTED TO REDUCE CARBON DIOXIDE AND AMMONIA CONTENT (OPEN FREE SHIPPING THIS OPERATION), AND THEN ADD WATER TO ADJUST THE WATER TEMPERATURE STEP, TO BE CONSISTENT WITHIN AND OUTSIDE TEMPERATURE (THE TEMPERATURE DIFFERENCE IS LESS THAN 2 ○ C) AFTER DISINFECTION, AND THEN INTO THE LOBSTER SPECIES TRAPS. STOCKING OF FINGERLINGS FROM CLOSE LOBSTER TRAPS, CULTIVATED DIRECTLY WITH A SMOOTH CONTAINER CAREFULLY PLACED LOBSTER TRAPS CAN BE.



FIVE, FEEDING AND MANAGEMENT
lobster traps grass carp, generally not a lot of grass fed, grass undernutrition is difficult because of its fast growth promotion, the full price of pellets should be fed in order to improve feed utilization, reduce bait on water pollution.
(A), feeding
1, feed varieties requirements
lobster traps grass carp, the artificial bait pellets mainly to add some plants, dry grass and other plant feed and vitamins, etc., in order to compensate for the lack of artificial pellet feed, while reducing the cost of farming.
2, feeding training
Grass carp into the box after 2 days to 3 days you can start feeding, feeding prior to domestication, in accordance with the "slow - fast - slow" pace and "less - and more - less" ration day, 1hour to domestication 1.5 hours continuous domestication 10 days, most of the fish can be floating snatch, they can carry out normal feeding. Into the box from the lobster species tr aps cultivation training is not required for feeding.
3, the amount of feeding
When the water temperature up to 16 o C, NEED DAILY UNIFORM FEEDING. THE DAILY RATION OF FORAGE BY LOBSTER TRAPS IN THE OVERALL WEIGHT OF 25 GRASS CARP TO 30% FEEDING. CONCENTRATED FEED daily ration of fish total weight 3% to 5%, the daily fed 3 to 4 times, each feeding about 0.5 hours to 1 hour, master, "eight full" principle, with most fish species fed walk for the degree. Each ration also according to changes in water temperature, weather changes, and activities such as feeding fish reasonably be adjusted. In the feeding method should pay attention to "four", "four to see" principle.Take a small Caesar feeding the cast, an eating Zaisa second put, when the fish are not snatch intense, you can cast a small amount of slow, so that weak constitution also eat fish feed, ensure balanced growth. Grass carp in water temperature 25 ℃ ~ 34 ℃ when the fastest growth, should increase the amount fed, in the rainy, hot, thunderstorms and other inclement weather to reduce feeding or stop feeding. Green fodder can be fed once every night, with 1% bleach disinfection put lobster traps, the ration to the next without leftover grass prevail.
4, THE ADJUSTMENT OF THE AMOUNT OF FEEDING
DETERMINATION OF PERIODIC SAMPLING TO ESTIMATE THE AMOUNT OF GRASS CARP DEPOSIT BOX IN ORDER TO RATIONALIZE THE AMOUNT OF FEEDING. GENERALLY EVERY 7 TO 10 DAYS TO ADJUST THE AMOUNT OF TIME FEEDING.
5, CONCENTRATED FEED FEEDING TIME AND FREQUENCY
WHEN THE TEMPERATURE REACHED 16 - 18 0 C WHEN FEEDING 1 DAY 12:00; WHEN THE WATER TEMPERATURE REACHED 19 - 25 0 C, THE DAY 10:00, 15:00 AND 18:00 EACH FEEDING 1; WHEN THE WATER TEMPERATURE REACHED 26 0 C ABOVE , THE DAY 8:00, 11:00, 14:00 AND 18:00 EACH FEEDING 1.

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