Spiny-breasted frog artificial breeding

The common names of spines and frogs are Stonehenge, Phosphorus, and Bone ridges, belonging to phylum, amphibians, anura, frogs, and frogs. The artificial breeding of spiny-breasted frogs to provide sufficient seedlings for artificial breeding is of great significance to the development of artificial breeding. Gutian County, Fujian Province, "Qingyuan spiny frog ecological farm" through more than 10 years of painstaking exploration, has accumulated rich experience in artificial seedlings, in 2004 using artificial breeding of pro-frogs for artificial reproduction, nursery success, to cultivate abnormal frogs More than 10,000 only provide a good way to adjust the rural industrial structure, develop characteristic aquaculture, increase the efficiency of freshwater aquaculture, and increase the income of farmers in inland areas. The main techniques for artificial breeding of spiny-breasted frogs are summarized as follows:
First, the cultivation and selection of pro-frogs
1. Site selection and structure of the pro-frog pool The spiny-breasted frogs should be built in spring waters with adequate water sources, no pollution sources, easy irrigation and drainage, convenient transportation, quiet environment, and cool shaded mountains (above 600m above sea level). , Shanshui and groundwater are the most ideal; the frog pool is generally a concrete pool with a height of about 1m, an area of ​​3 to 5 square meters, and a maximum size of 10 square meters; the pool shape is a rectangle, and the bottom of the pool is slightly inclined. Water restriction hole is provided. The hole is 10cm to 20cm away from the bottom of the pool. The water level can be adjusted freely. The water inlet pipe is installed on the side above the pool, and the drainage hole is located at the lowest position. The pool is equipped with water surface, land, stone caverns, grasses, and feed platforms, etc. There are awnings and anti-escape nets. The new pool should be washed with water for several times (about 1 month) to eliminate alkalinity and then used after routine disinfection.
2. The stocking density of frog stocking and rearing-like stocking is 10/m2 to 15/m2, and the conditions can be reduced to 5/m2 to 8/m2 in the spawning season. The ratio of male to female is 1:1. The live bait that feeds frogs is mainly quail. It is fed once a day before dark in the evening. The daily feeding amount is about 5% of the total weight of the frogs, which depends on the climate, water temperature, and frog's feeding. Flexible control, generally based on the principle of a slight surplus on the second day.
3. Selection of pro-frogs Before hibernation to reproduction, the parental frog should be screened and selected. Individuals should be sized (female frog weight should be above 150g, male frog weight should be above 200g), well-developed, and no injury or illness should be considered. The breeding frog used in the year.
Second, artificial breeding
1. The optimum temperature for spawning and fertilization of spiny-breasted frogs is between 18°C ​​and 26°C. In the inland mountainous areas in eastern Fujian Province, from late April to mid-September, the breeding season of spiny-breasted frogs is mid-May to mid-May. The peak of the spawning season is in late June. During the breeding season, mature male frogs will issue courtesy calls for “fighting and squeaking” to attract female frogs. After the two sides contact each other, they will hold the pair. After a few hours, the female frog will be stimulated to expel eggs, and the male frogs will quickly platoon. Sophisticated, in vitro fertilization, sperm and eggs combined in water to complete fertilization. Female frogs spawn three times each year, and the annual egg production varies with the size and age of the individual, generally 400 to 600, and up to 1,000. The fertilized eggs of the spine-breasted frog are larger and spherical, the animals are extremely black, and the plants are extremely white. They have colloidal membranes and are sticky. When they have just been produced, they have egg diameters of 3 to 4 mm, and they can increase in size when they swell in water. 2 ~ 3 times. Between the eggs, the egg membranes are adhered to each other in blocks and adhere to pool walls, rocks, or artificially set eggs (in the pool, nylon mesh bags, etc.). Some of the eggs that have just been produced are extremely upward and some animals are extremely upward. The normal fertilized eggs will be automatically transposed after a few hours of output and the animals will be extremely upward. If they are not automatically transposed after several hours, they are Unfertilized eggs. Under normal circumstances, the fertility rate of natural reproduction can reach more than 90%.
2. Frog eggs collection and hatching During the breeding season, the pool was patrolled once in the morning, and it was found that the egg masses had to be hatched out in time to avoid leaving the pool for a long time. The glial membrane softened and sank into the bottom of the pool, causing hypoxia and death of the egg cells. The hatching pool is located in the interior and is a concrete pool structure. It has an area of ​​2 square meters and a water depth of about 20cm. It can deliver 4 eggs per square meter to 5 groups/square meter. During the incubation period, the microfluidic state is maintained, and the unfertilized eggs that cannot be normally transposed in the animal and the egg becomes turbid white should be removed in time to prevent the fungus from infecting the hydromycosis. Water temperature 16 °C ~ 23 °C, the general 7 days to 8 days can be hatched larvae; water temperature 25 °C ~ 28 °C, it will take 4 days to 5 days hatch maggots. If the water quality is good, the climate is normal, and the management is proper, the hatching rate can reach more than 80%.
Third, quail feeding
1. Dianchi pool is not informal, but it should be structured, with an area of ​​10 m2 to 30 m2. The walls of the pool were plastered with cement. The central pool built 3 to 4 dew platforms (also known as frog islands) with an area of ​​1 square meter and a height of 1cm to 3cm above the water surface. Died of drowning for a long time. The depth of the pool water is 20cm to 30cm, which does not submerge the young frog island. Inlet and outlet openings are installed to prevent escape. In order to adapt to the ambiguous living habits of Yu Xiyin, black shade fabrics can be added to the top of the pool.
2. Preparations before stocking First, dredging, desalination, Dianchi pond should be cleared after the completion of the pool, covered with clean sand, and soaked in water for about 2 weeks during the irrigation, drainage flush 3 ~ 4 Times. The second is disinfection. Disinfection is carried out with lime 120 mg/L, potassium permanganate 20 mg/L or bleach 10 mg/L 7 days to 10 days before stocking.
3. After 4 to 5 days of hatching, the yolk sac disappeared and the digestive system became sound. At this point, the earthworms should be picked up from the hatching pond and fed into the pond. The stocking density depends on the size of the storks. The stocking density of the 10-day-old pupa is 1000 to 2,000/m2, 300 to 500 larva/m2 for 30 days and over, and the breeding period is about 30 days. Size sorting, grading rearing, classification stocking density can be reduced to 100 / m2 ~ 200 / m2; if the initial stocking density is 100 / m2 ~ 200 / m2, midway do not need to pool dilute.

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