Cultivation method for improving the survival rate of black-spotted frogs used in paddy field cultivation

A cultivation method and technology of survival rate, applied in the field of ecological agriculture, can solve the problems of increasing mortality during metamorphosis, low survival rate, limited nutrient accumulation, etc. Effect

Active Publication Date: 2022-06-07
CHENGDU ACAD OF AGRI & FORESTRY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method reduces the food intake of tadpoles and forces them to quickly enter the metamorphosis period to shorten the growth cycle of frogs. However, for frogs, entering the metamorphosis period too early means that their nutrient accumulation during the tadpole period is limited, and it is often difficult to pass through metamorphosis smoothly. During the metamorphosis period, the mortality rate in the metamorphosis period is increased. Even if it successfully develops into a young frog, it is still a very small young frog. In the process of breeding in a complex rice field, the survival rate is extremely low.

Method used

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  • Cultivation method for improving the survival rate of black-spotted frogs used in paddy field cultivation
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  • Cultivation method for improving the survival rate of black-spotted frogs used in paddy field cultivation

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Effect test

Embodiment 1

[0033] The present embodiment provides a culture method to improve the survival rate of black spotted frogs for rice field farming, comprising the following steps:

[0034]S1. Pre-breeding screening: The eggs of the black spotted frog are put into the hatchery, the water temperature in the hatching pond is 18 °C, the pH is 7.8, the light is 18h per day, the light intensity is 4800lux, and after 10d, the tadpole seedlings with a body length of more than 10.5 mm are selected.

[0035] S2. Phase I screening: The tadpole seedlings screened out in step S1 are moved into the breeding pond, and the water depth in the breeding pond is maintained at 20 cm and the water temperature is 25 °C. When the average body length of tadpole seedlings reaches 20mm, slowly increase the amount of water inlet, so that the water depth in the breeding pond is increased to 43cm, using pellet feed feeding, the pellet feed used in this embodiment is made of soybean meal meal, wheat bran, peanut cake and fish ...

Embodiment 2

[0039] The culture method of the present embodiment comprises the following steps:

[0040] S1. Pre-breed screening: Put the eggs of the black spotted frog into the incubation pond, keep the water temperature in the hatching pool at 23 °C, pH value of 8.3, light for 16h per day, light intensity of 5500lux, after 13 days, select tadpole seedlings with a body length of more than 10.5 mm.

[0041]S2. Phase I screening: The tadpole seedlings screened out in step S1 are moved into the breeding pond, and the water depth in the breeding pond is maintained at 25 cm and the water temperature is 20 °C. When the average body length of tadpole seedlings reaches 22.5mm, slowly increase the amount of water inlet, so that the water depth in the breeding pond is increased to 48cm, using pellet feed feeding, the pellet feed used in this embodiment is made of soybean meal meal, wheat bran, peanut cake and fish meal, the feeding amount is 2% of the tadpole body weight, after feeding for 22d, the tad...

Embodiment 3

[0045] The culture method of the present embodiment comprises the following steps:

[0046] S1. Pre-breed screening: Put the eggs of the black-spotted frog into the hatching pool, keep the water temperature in the hatching pond at 20 °C, pH 8, light for 17h per day, light intensity of 5200lux, after 12d, select tadpole seedlings with a body length of more than 10.5mm.

[0047] S2. Phase I screening: The tadpole seedlings screened out in step S1 are moved into the breeding pond, and the water depth in the breeding pond is maintained at 22 cm and the water temperature is 23 °C. When the average body length of tadpole seedlings reaches 21mm, slowly increase the amount of water inlet, so that the water depth in the breeding pond increases to 45cm, using pellet feed feeding, the pellet feed used in this embodiment is made of soybean meal meal, wheat bran, peanut cake and fish meal, the feeding amount is 2.5% of the tadpole body weight, after feeding for 20 days, the tadpole seedlings w...

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Abstract

The invention discloses a cultivation method for improving the survival rate of black-spotted frogs used in paddy field cultivation, which belongs to the technical field of ecological agriculture cultivation, and includes: S1. Screening before breeding: hatching, cultivating and screening frog eggs in the hatching period; S2. Phase one screening: cultivation and screening of tadpoles in growth phase; S3. Phase two screening: cultivation and screening of tadpoles in metamorphosis phase. Through the multiple screening process of the black-spotted frog seedlings from the incubation period to the metamorphosis period, the young frog seedlings with good development potential, activity ability and adaptability are screened out, which is conducive to improving the survival of the black-spotted frog in rice field culture Rate.

Description

Technical field [0001] The present invention relates to a culture method to improve the survival rate of black spotted frogs for rice field farming, belonging to the field of ecological agricultural breeding technology. Background [0002] Rana nigromaculatus , an amphibian , tailless , frog family , lateral fold frog genus , gregarious , inhabits swamps , ponds , rice paddies and other waters and nearby grasses , tadpoles are omnivorous , hypertrophied , green and scattered with irregular dark markings , metamorphosis into juvenile frogs , with arthropod insects as their main food. The meat of the black spotted frog is tender, delicious, excellent taste, its fat is low, low sugar, rich in protein, calcium, phosphorus, iron, vitamins, creatine and carnosine and other nutrients, is a superior green food and tonic. Modern medical research has shown that the black spotted frog has a cool and sweet taste, and has the effect of clearing heat, detoxifying, reducing swelling and relievi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K67/02A23K50/00A23K10/30A23K10/22A23K10/20A23K10/26
CPCA01K67/02A23K50/00A23K10/30A23K10/22A23K10/20A23K10/26Y02A40/81
Inventor 李良玉唐洪张小丽黄小丽陈德芳袁晓梅王恒程东进郭云建李世春王定国苏中海仇美红廖敏吴谦吴艳蓉
Owner CHENGDU ACAD OF AGRI & FORESTRY SCI
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