Crayfish culture does not need to add salt in the water. It is necessary to lay yellow sand on the bottom of the cylinder because it has the habit of burrowing.
It is best not to keep up with small turtles, because they all have offensive "weapons" and they will hurt each other.

Crayfish growth habits

Living water bodies and water quality requirements Crayfish are highly adaptable. From the investigation, no matter whether lakes, rivers, ponds, drains, or paddy fields can survive, even waters that are difficult for some fish to survive can survive. The lobster is very adaptable to dissolved oxygen in the water. It can not only climb up the shore in the absence of oxygen in the water, but also can use the floating plants or aquatic plants in the water to lay the body on the water side, and use the side of the body to breathe in order to maintain survive. In order to determine the critical value of lobster dissolved oxygen in the water, we conducted an experiment in a laboratory aquarium tank. The water depth of the 40cm60cm tank was 25cm deep. There is no floating matter that can be attached to the lobster in the water. After releasing the lobster, the lobster is allowed to gradually consume dissolved oxygen in the water. When the lobster in the aquarium reaches 73% due to the lack of oxygen, the dissolved oxygen in the water is determined to be 0.67 mg/L.

The food habits of lobsters are very complex. A variety of fresh plants, benthic animals, mollusks, and large zooplanktons in water bodies, as well as the bodies of various fish and shrimps and similar corpses, are lobster-like feeding materials for artificial feeding. The feed is also very much like eating. During the growing season, many water surfaces of phytoplankton in the downwinds of the pond can observe the phenomenon that the lobsters place the mouthparts at the water level and use two large claws to keep the water to send the algae to the population, indicating that the crayfish can even be used. Algae in the water.

Digging habits

1. The depth and speed of burrowing The depth of lobster burrowing is a key factor in determining the degree of damage. According to our on-the-spot measurements of 35 cave lobster burrows, most caves have a depth of 50 to 80 centimeters, accounting for about 70% of the measured caves, and some caves have a depth of more than 1 metre. We measured the longest cave Up to 2.1 meters. In general, lobster caves with horizontal planes tend to have a depth of more than one meter, while caves with vertical depths are generally shallow. Lobster burrowing is very fast, especially in releasing a new living environment. We observed the lobsters in the Dafeng Lobster Test Site after an overnight observation. Under sandy soil conditions, most of the new holes dug by lobsters were more than 30 cm deep.

2. Position of lobster caves The location of the lobster burrowing hole is usually selected at the level of the river. However, this option often causes the caverns to rise or fall below the water level due to the change of the water level. Therefore, the lobster caverns are generally at the bottom 20 centimeters above the water surface. . However, the choice of location for lobster burrowing is not very strict. There are lobster caves at our test site, at the water pool, at the water slope, and at the bottom of the shallow water pool.

3. Influence of living environment on lobster burrowing The impact of water body sediment conditions on lobster burrowing is more obvious. In sandy soil with lack of sediment organic matter, lobster burrowing phenomenon is more, and hard soil burrowing is less. In the condition of more water quality, more bottom sludge, and rich organic matter, the lobster caverns are significantly reduced. However, no matter what kind of living environment, the number of lobster holes in the breeding season increased significantly.

In biology, folliculogenesis is the maturation of the ovarian follicle, a densely packed shell of somatic cells that contains an immature oocyte. Folliculogenesis describes the progression of a number of small primordial follicles into large preovulatory follicles that occurs in part during the menstrual cycle.

Estrogen levels peak towards the end of the follicular phase. This causes a surge in levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH). This lasts from 24 to 36 hours, and results in the rupture of the ovarian follicles, causing the oocyte to be released from the ovary.

We have Pregnant Mare Serum Gonadotropin (PMSG) Injection and Luteinizine Hormone-Realeasing Hormone A3 (LHRH A3) to help farmers to solve breeding problems in this phase.

Folliculogenesis and Ovulation

Folliculogenesis and Ovulation,Pregnant Mare Serum Gonadotropin,Veterinary Medicine Ovulation Injection,Pregnant Mare Serum Gonadotropin

Jiangxi Institute of Biological Products Inc. , https://www.jxinstitute.com