CN1033143A

CN1033143A - The domestication method of bullfrog

Info

Publication number: CN1033143A
Application number: CN 87102109
Authority: CN
Inventors: 喻良刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-14
Filing date: 1987-11-14
Publication date: 1989-05-31

Abstract

The domestication method of bullfrog belongs to the breed of general biology.Under the condition of shallow-layer clear water reserviors high-density breeding, adopt and progressively change bait structure and the jejunitas method that combines of short-term, make bullfrog be domesticated for the food manufactured feed, thereby solve the problem of the living bait source difficulty in the bullog cultivation industry, for the development bullog cultivation already lays the first stone by the food living bait.The inventive method is simple and easy to do, tames effectively, does not need special appointed condition, reaches the purpose of domestication.

Description

The domestication method of bullfrog

The domestication method of bullfrog belongs to the breed of general biology.

Bullfrog (Rana Catesbeiana Shan) is a kind of large edible frog, its fast growth, and the meat flavour deliciousness, the protein content height, nutritious.Approaching to frog cortex simultaneously and tough and tensile, is the raw material of system high leather, and it is significant to the raising people's living standard therefore to develop the bullog cultivation industry.

The many provinces of China successively propagated artificially from external introduction bullfrog the beginning of the sixties, because bullfrog food living bait habit is difficult to change, therefore the bullfrog feed becomes a difficult problem in propagating artificially, and most of at that time provinces and cities carry out the field and banish culture experiment, all failures successively.The eighties, the breed of bullfrog begins again, is still an important key in the artificial culture technology but change bullfrog food living bait habit.Feeding habits of the frog and tadpole fundamental difference are food fully with the living bait.Under field conditions (factors), bullfrog is bait with the insect mainly, so can install light trap in the frog pond, solve the part bait problem of bullfrog with the insect of luring, but under the intensive culture condition, depend merely on and lure the collection insect, can not satisfy the bait needs of the frog, the artitificial food of must throwing something and feeding.The just abnormal frog, can throw fly maggot, the spiral shell that smashes, mussel meat, small fish and shrimp etc., can throw trash fish, umbles, earthworm etc. later on, this artitificial food is fed bullfrog must improve the cost of the commodity frog, feed source is limited simultaneously, also is restricted with regard to the development that makes the bullog cultivation industry.Therefore changing the bullfrog feeding habits, make it to adapt to the manufactured feed of throwing something and feeding, is an effective way of development bullog cultivation industry.

The present invention is intended to adopt in the raising pond of certain condition artificial acclimation method to change the habit of bullfrog food living bait, is anthropophagy worker's manufactured feed; Thereby the living bait that solves in the commodity production in enormous quantities comes source problem, with development bullog cultivation industry.

Solution of the present invention is: 1-3 week after the metamorphosis of bullfrog Ke bait, froglet is transferred to high-density breeding in the shallow-layer clear water reserviors, progressively changes bait structure ， And and combine with short-term is jejunitas, to making the artifical compound feed of all throwing something and feeding, change bullfrog food living bait habit.The water layer height in frog pond is decided on different growing stage frog body size, is generally 2-10cm, and during the domestication beginning, the breeding density of froglet can reach 200-250/m ², the step of bait structural change is progressively mixed manufactured feed again for the living bait of all throwing something and feeding earlier in living bait, manufactured feed to be mixed reach a certain amount of after, through jejunitas 3-4 days, the manufactured feed of can all throwing something and feeding.

Be described in further detail the present invention below: bullfrog is an amphibian, generally speaking, except the water surface, certain land surface should be arranged in the frog pond, has a rest and ingest for bullfrog in the cave that should plant water plants such as lotus rhizome, hornwort simultaneously and build some.But in such ecotope, carry out domestication, it is difficult changing bullfrog food living bait habit.Therefore the present invention will raise the froglet in abnormal 1-3 week of pond tadpole to be transferred to shallow-layer clear water reserviors middle-high density breed ， And to carry out domestication in this ecotope.Raising the pond can be Tu Chi, also can be cement pit; Can be indoor, also can be outdoor, the outdoor pond of building will be chosen under the tree shade or takes cool canopy, all adopts the clear water of the 2-10cm degree of depth to culture in the pond, and promptly not planting water plants in the pond does not have sheltered situations such as cave yet.The wall of must placing obstacles around the pond is escaped to prevent bullfrog, and the degree of depth of water layer should be decided according to the individual size of the different vegetative stages of bullfrog, and when generally squatting with bullfrog, head surfaces and is as the criterion.The individual size of bullfrog in certain same growth period is variant, therefore raises the pond middle water level and differs everywhere, and raising the pond simultaneously should have certain slope, is convenient to discharging when changing water in order to frog pond, raises the pond and should refresh the water periodically, and the time interval decides on water quality.The water temperature of culturing bullfrog should maintain 24 °-26 ℃ and be advisable, and temperature should remain on 24 °-30 ℃ and be advisable.When the froglet domestication began, its breeding density can reach 200-250/m ², to grow up with frog body later on, and when individual difference in size occurring, can divide the pond, the output of the last commodity frog can reach 15-20 kilogram/m ²Under suitable temperature condition, adopt shallow-layer clear water, high-density rearing's method that the bullfrog domestication is had following benefit:

1. raise in the shallow-layer clear water reserviors of sheltered situations such as no aquatic plant, no cave, being beneficial to increases the bullfrog activity, promotes bullfrog appetite, and does not have the barrier that hinders the bullfrog visual field, makes bullfrog easily find bait, is beneficial to bullfrog to ingest, and promotes the bullfrog growth.

2. high density is put in a suitable place to breed, be to make full use of the raising pool area on the one hand, the more important thing is in the big raising pond of bullfrog density, the activity of each bullfrog all can cause the fluctuation of the water surface, the pellet of throwing something and feeding is movement therewith also, the help bullfrog is found the bait target and ingests that the domestication process is easy to finish.

The domestication process of manufactured feed of throwing something and feeding adopts and progressively to change bait structure and the jejunitas method that combines of short-term, and domestication is to carry out under shallow-layer clear water reserviors high-density breeding condition simultaneously, causes an environment that promotes bullfrog appetite.Fixed point, the feed of throwing something and feeding quantitatively, regularly make bullfrog produce the conditioned reflex of feed.Manufactured feed will be made graininess, and the particle specification should adapt with frog body size, to change the habit that bullfrog licks with the tip of the tongue, increases food-intake, satisfies the bullfrog growth needs.Raising under the bigger situation of pool area, should in the pond, ， And be separated by the froglet size packets in the pond before the domestication with net, every group is 1000-1500, domestication is raised respectively.The domestication initial stage, the bait injected volume will suitably be controlled, the 4/5-3/4 And that is generally normal daily ration, feeding quantity progressively increases the input ratio of manufactured feed wherein by 1/5 to 1/2, the phenomenon of manufactured feed surplus can take place in the domestication process, but 1-2 fades away after week, got final product jejunitas 3-4 days, the manufactured feed of all throwing something and feeding again, its throwing amount is normal 1/2, is enlarged to normal amount later on gradually, after several days as find to also have the minority bullfrog still not eat manufactured feed, then separately put in a suitable place to breed, bullfrog with other groups continues domestication again, and domestication rate according to said method can reach more than 95%.

With the bullfrog that manufactured feed is raised, 5-6 is the average individuality 400-500 gram that weighs after the month, at this moment can select defect individual wherein to do the close frog, shifts close relative frog pond and continues to culture.

The inventive method is simple and easy to do, tames effectively, is not needing under the special appointed condition, changes bullfrog food living bait habit, has solved a difficult problem in the bullog cultivation industry, lays the first stone for forming the bullog cultivation industry.

Claims

1, the domestication method of a kind of bullfrog, in less raising pond, the artitificial food of throwing something and feeding, carry out intensive culture, it is characterized in that being transferred to high-density breeding in the shallow-layer clear water reserviors 1-3 week after the Ke Ke metamorphosis, progressively change the bait structure, And combines with short-term is jejunitas, to making the artifical compound feed of all throwing something and feeding, change bullfrog food living bait habit.

2, according to the described bullfrog domestication of claim 1 method, it is characterized in that the water layer height in frog pond, decide on different growing stage frog body size, be generally 2-10cm.

3, according to the domestication method of the described bullfrog of claim 1, when it is characterized in that the domestication beginning, the breeding density of froglet can reach 200-250/m ²

4, according to the domestication method of the described bullfrog of claim 1, the change step that it is characterized in that erbium material structure is progressively mixed manufactured feed again for the living bait of all throwing something and feeding earlier in living bait, manufactured feed to be mixed reach a certain amount of after, through jejunitas 3-4 days, the manufactured feed of all throwing something and feeding.