spawn Learn more about spawn
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How much is the price of 2019 forest frogs per jin? What is the method of building the spawning pool of Rana chensinensis?
Chinese forest frog is an amphibian family, frog genus, commonly known as the toad, is a kind of high economic value of food and medicine as one of the precious amphibians. Next, let's introduce how much the forest frog costs per jin and how to build the spawning pool of the Chinese forest frog.
2020-11-11 2019 forest frog price more less money one jin China spawning pond -
How to catch carp during the spawning period
Carp spawning period to find a suitable place for fish to spawn fishing, usually in the water plants, or in the shallow water where there are stones. Although the female carp do not eat during the spawning period, the male carp will chase the female carp and eat naturally when they see the food. In this way,
2020-11-11 Carp spawning period how fishing carrying carp to find -
To protect mackerel mothers from spawning, Taiwan announced for the first time that mackerel fishing was banned for 20 days during the peak spawning period.
To protect mackerel mothers from spawning, Taiwan announced for the first time that mackerel fishing was banned for 20 days during the peak spawning period.
2018-02-12 -
Technical measures to reduce the death of spawning parent fish
Reducing the death of spawning parent fish is an important technical work in fish fry culture. There are two main factors causing the death of parent fish in spawning. One is that parent fish consume a lot of physical energy in the process of spawning and reproduction, which increases the side effects of spawning drugs and reduces the resistance of parent fish. If the fish is seriously injured, various pathogens will take advantage of the opportunity to infect the fish and cause disease, resulting in the death of the parent fish. Second, the physique of the parent fish is poor, or the water temperature changes greatly during the induction of labor, and the improper dose of the drug (the dose is too high or too low), the parent fish can not give birth normally.
2019-01-16 -
Breeding methods of brocade carp
Most of the cultured koi are artificial breeding methods, which can make the fertilization rate and hatching rate higher, so what are the breeding methods of koi? First, prepare before laying eggs. Isolation: changing the environment is good for mating, while artificial isolation is the most direct.
2020-11-11 Koi breeding methods koi most of them. -
Spawning technology of parent fish of cultured turbot
Turbot is found in coastal waters from the Mediterranean to Norway. Turbot is a valuable farmed fish in Europe. Turbot culture has developed continuously in the past 10 years. The production of turbot culture increased from 150t in 1985 to 3700 t in 1998. In the Atlantic coastal waters, turbot reproduces naturally in summer, but it may reproduce all year round by artificially controlling the light cycle and water temperature, or only by controlling the light cycle. Turbot spawned in batches and spawned as many as 10 times during the breeding period. Under the conditions of reception
2019-01-16 -
Key Techniques for Reducing the Casualties of Parental Fish
The main factors leading to the death and injury of spawning parent fish are as follows: one is that the parent fish consumes a lot of physical energy in the process of spawning and reproduction, and the side effects of spawning drugs make the resistance ability of the parent fish decrease. If the fish body is injured, the pathogen infection is easy to cause diseases; the other is that the parent fish is poor in constitution, or the water temperature changes greatly during spawning, and the dosage of spawning drugs is improper. The parent fish cannot spawn normally, and thus causes its own physiological activity disorder and death. Therefore, in production, it is necessary to effectively grasp the prenatal cultivation of parent fish, so that the gonad development of parent fish is normal.
2019-01-16 -
When do goldfish spawn
Goldfish is a common ornamental fish in life. Because of its good appearance and easy to feed, goldfish is deeply loved by fish friends. Many people like to keep several goldfish at home. When do goldfish lay eggs? When do goldfish spawn? Goldfish usually rain at temperatures above 16 degrees.
2020-11-11 Goldfish when spawn goldfish yes life common -
Feeding and management of young frogs
Frog breeding is very common in our country, but we all know that frogs are evolved from tadpoles, so when the tadpoles and young frogs finally grow into adults, the growth environment they need at each stage is different. Frog young frog
2020-11-08 Frogs young frogs breeding management frogs in our country -
Breeding and hatching of Rana chensinensis in South China-- Reproductive technique
The technique of reproduction and hatching is one of the key techniques for the culture of Rana chensinensis in the south. Usually in early March, before the water temperature rises to 10 ℃, it is necessary to prepare for reproduction.
2019-02-28 -
Techniques of semi-artificial propagation of cultured Pelteobagrus fulvidraco
Because the male testes of Pelteobagrus fulvidraco are dendritic and unable to extrude semen, the male fish are usually killed in artificial reproduction, and the testes are cut up for artificial insemination. Most of the female fish will die after artificial egg squeezing. Whole person
2020-11-08 Aquaculture Pelteobagrus fulvidraco semi artificial reproductive technical due to -
Breeding techniques of cultured forest frog
The reproduction technology of forest frog is a main link in production, and the level of reproduction technology is directly related to the benefit of artificial breeding forest frog. The breeding technology of closed ditch frog mainly includes seed selection, spawning, hatching and feeding and so on. Egg breeding and frog breeding are the main production of frogs at present.
2020-11-08 Breeding forest frog breeding technology -
How many years do Sturgeon breed and spawn
According to relevant studies, the age of female fish at spawning is about 16-29 years old, and their body weight is about 170-300 kg, while the age of sexual maturity of male fish is about 9-22 years old, and the weight is about 40-125 kg. Fish schools stop eating during spawning, and fish eggs are the most
2020-11-08 Sturgeon breeding how many years spawning abstract according to related research -
When do crayfish spawn? How many times a year can you lay eggs? How many eggs are laid?
Crayfish is a kind of freshwater economic shrimp, which is very popular because of its delicious meat. It is an indispensable delicacy at midnight snack stalls in summer. So do you know when crayfish spawn? How many times a year can you lay eggs? How much eggs are laid? According to crayfish culture
2020-11-11 Small lobster what season spawning a year can several times quantity yes -
How do sea cucumbers reproduce? What's the difference between sea cucumber and sea cucumber?
Sea cucumbers grow in deep-sea areas and have no pollution. Due to natural environmental factors and the influence of tides, their fishing is seasonal, and sea cucumbers with insufficient growth years are generally not fished. This is why sea cucumbers are fleshy and have good taste toughness.
2020-11-11 Sea cucumber how reproduction and sea cucumber where is the difference? -
The breeding method of fairy fish
The breeding method of fairy fish
2018-07-06 -
When does the black fish lay eggs?
At present, black fish is a popular kind of edible fish, which is not only of high nutritional value, but also has few spines, so it is suitable for both men and women, old and young, so many areas are farmed. If you want to raise black fish well, you must understand the knowledge related to spawning. When will the black fish lay eggs?
2020-11-11 Black fish when spawning black at present yes compare -
How do swallow fish breed?
Swallow fish, also known as fairy fish, angel fish. It also has no special requirements for water quality and can be mixed with most fish in a weakly acidic water environment. So, how do swallow fish reproduce? 1. How do swallow fish reproduce? 1. Swallow fish are egg-laying fish.
2020-11-11 Swallow fish yes how breeding swallow fish also known as immortal fish -
Don't forget to protect the parent fish in order to induce labor.
Reducing the death of spawning parent fish is an important technical work for fish fry producers. In the production practice, we found that there are two reasons for the death of parent fish: first, the physical exertion of parent fish in the process of spawning and reproduction, coupled with the side effects of spawning drugs, reduce the resistance of parent fish, if the fish is seriously injured, a variety of pathogens will take advantage of the opportunity to infect the fish and cause disease, resulting in the death of the parent fish. Second, the physique of the parent fish is poor, the gonadal development is poor, or the water temperature changes greatly during the induction of labor, and the dosage of drugs used to induce labor is inappropriate.
2019-01-16 -
Selection method of breeding Frog in Stone Frog Culture
The spawning and hatching season of stone frog is from April to September, and the spawning peak is from May to June. In order to improve the spawning rate and hatching rate, we must start from the hibernating recovery of breeding frogs, and do a good job in the selection, breeding, spawning and hatching of breeding frogs. The selection of frogs is the basis for artificial reproduction.
2020-11-08 Stone frog breeding planting frog selection method stone frog spawning