1. Feeding management during flood season
The pupa period is an extremely important period in the individual life history of Rana sylvatica. It usually lasts for 40-50 days. Artificial sheds are a good facility for keeping crickets.
(1) Feeding in the flood season: The quail is omnivorous. The main feeding targets are algae, weeds, wild vegetables, vegetables, various animal meats, and internal organs. Under artificial rearing conditions, a certain amount of artificial feed should be fed in order to cultivate high quality young frog populations. The specific methods are as follows:
1-7 days of age: mainly eat the egg film, no artificial feed.
8-14 days of age: eat plant feed, mainly soybean milk and cooked sheep's hoof leaves, sesame seeds and other young leaves. Feed once a day for a dose of 250 g/m2.
15-29 days old: eat young pods, eucalyptus leaves, hoof leaves, wormwood, etc., combined with feed concentrate (corn flour: soybean meal: fish meal: bone meal 1:1:0.5:0.5) or with nutritional value Quite the fish feed. Daily investment 1-2 times, the amount of concentrate material is 500-1000 g/m2.
30 days old: During the metamorphosis period, food is stopped and artificial feed is stopped.
The feed for alfalfa is mainly vegetable feed. The proportion of fine and coarse feed is about 1:2. The feed can be directly put on the water intake or the water intake board.
(2) Management of flood season:
1 density adjustment. When the density of artificial rearing alfalfa is about 10 days of age, 4000-5000 eggs will be stocked per square meter of water; when it is 15-20 days old, the density will be controlled to 2500-3000 eggs per square meter of water; 25-30 days of age , 1500-2000 eggs should be stocked per square meter of water.
2 The same principle as the age of the same pool. Artificial breeding of earthworms, the high density, easily lead to the phenomenon of day-to-day mutual grueling, generally eating small. After the start of eating, it is very harmful to the later egg groups. They can quickly bite the unhatched egg membrane and cause a large number of eggs to die. Therefore, the eggs must be placed in the same incubation pool for the same period to ensure consistency with the age of the pool.
3 feeding. Feeding should be regular and fixed, while feed should be guaranteed and guaranteed. If the amount of material is not enough, then they will kill each other. Usually they will bite small ones, or they may siege one quail until they are eaten. Excessive feed quantity will seriously pollute the water quality, causing the pool to reduce the amount of dissolved oxygen, and it will easily cause a lot of death.
4 pool water management. The key points of the management of pool water management during the flood season can be summarized as “water quality, water quantity and water temperatureâ€.
In the flood season, sufficient water sources must be ensured and irrigation and drainage at any time. The surface of the pool requires smooth water injection. In the early stages of growth, the temperature of the water is adjusted by irrigation and is performed at 14-15 p.m. every afternoon. Generally shallow irrigation during the day and sunny days, deep irrigation at night or overcast days. In the late growth stage, when the water temperature reaches above 24°C, the amount of irrigation water should be increased to reduce the water temperature.
In addition, it is necessary to constantly check the water level in the pool and clean up the sediments in time to ensure that the rearing pond keeps water and stinks, and prevents pollution such as sewage and pesticides. The pH of the pool water should be 6.5-7.0. Replace the pool thoroughly once a week.
2. Metamorphosis management
When the cormorants grow to 25-29 days of age, they have a total length of 4.3-5 centimeters, a body length of 1.2-1.5 centimeters, a flat round shape, a diameter of 0.9-1 centimeters, a tail length of 3.2-3.5 centimeters, and basic development of hind legs. Intact, 1-1.5 cm long, with two small projections at the front legs, which begin to go over metamorphosis. The characteristic of the pupa entering the metamorphosis is that the forelimbs appear on the body side, the abdomen shrinks, the body becomes smaller and stops eating.
When the pupa grows to metamorphosis, if there is a reservoir (area of ​​2-4 square meters) in the frog breeding circle, the metamorphosis quail can be collected directly and transported to the reservoir of the breeding circle for natural completion. Metamorphosis, feeding directly into the circle.
If there are no reservoirs in the breeding circle, wait for the frogs to metamorphose and catch them in a timely manner. When catching, it is best to use the hand to operate the net instead of directly using the hand so as not to damage the frog.
Before the arrival of the metamorphosis period, pre-selected plastic sheets should be used to enclose the metamorphosis pool and require the fence to be tight and seamless to prevent the frog from escaping.
During the metamorphosis period, it is necessary to prevent some birds from infestation and feeding.
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