Australian crayfish farming methods and environmental needs.
1. Overview. Australian crayfish, scientific name red camouflage crayfish, is a freshwater crayfish found in Australia. Due to its unique appearance and delicious meat quality, it has become a popular aquaculture species worldwide. Especially in China, the Australian crayfish farming industry has developed rapidly in recent years, and the market demand continues to grow. To meet this demand, many farmers have joined the industry. However, successful Australian crayfish farming is not an easy task and requires an understanding and mastery of some key farming techniques and environmental conditions.
Second, the breeding method.
Pond conditions: Ponds for Australian crayfish should be selected in a quiet place with good water quality. The size of the pond should be moderate, generally 1-5 acres, and the water depth should be 1-15 meters between. At the same time, the bottom of the pond should be flat to facilitate crayfish to burrow and perch.
Water quality management: Australian crayfish has high requirements for water quality, so it is necessary to test the water quality regularly. The pH of the water quality should be maintained at 65-8.Dissolved oxygen should be kept above 3-5 milliliters. In addition, it is necessary to control the content of harmful substances such as ammonia nitrogen and nitrite to keep the water fresh.
Seedlings: Before seedlings, the pond should be disinfected to eliminate pathogens and predators. When releasing seedlings, it is necessary to choose crayfish seedlings with strong physique and consistent specifications, so as to facilitate later management and improve the survival rate.
Feeding management: Australian crayfish are omnivorous animals and need to be fed an appropriate amount of protein and energy feed. According to the growth stage and weather conditions of crayfish, the feeding amount and feeding time should be reasonably arranged. At the same time, it is necessary to regularly check the growth of crayfish, and adjust the feed formula and feeding amount in time.
Disease control: Australian crayfish are susceptible to diseases such as bacteria, viruses and parasites. Therefore, it is necessary to establish a regular disease detection and prevention system. If sick shrimp is found, it should be isolated and ** in time to prevent the spread of the disease. At the same time, the pond should be disinfected regularly to keep the water clean and hygienic.
3. Environmental needs.
Water temperature: The suitable water temperature range for Australian crayfish is between 18-32 degrees Celsius. During the breeding period and the beginning of growth, the water temperature should be maintained between 24-28 degrees Celsius;In the later stages of growth, the water temperature can be appropriately reduced.
Light: Australian crayfish need plenty of light to maintain their normal life activities. During the breeding process, it is necessary to ensure that there is enough natural light or artificial light source around the pond.
Dissolved oxygen: Australian crayfish has a high requirement for dissolved oxygen, which should generally be above 3 milliliters. In the case of high temperature seasons or deterioration of water quality, aeration measures should be taken or new water should be replaced to maintain sufficient dissolved oxygen.
pH: Australian crayfish is suitable for pH 65-8.0 between water life. In the process of breeding, the pH of the water quality should be regularly tested and adjusted.
Ammonia nitrogen and nitrite: Ammonia nitrogen and nitrite are important factors affecting the growth of Australian crayfish. In the breeding process, the ammonia nitrogen content should be controlled to be less than 05 mg liters, nitrite content less than 01 mg liter.
Prevention of predators: In the process of breeding, it is necessary to prevent birds, fish, snakes and other predators from invading Australian crayfish. Measures such as setting up anti-bird nets and repelling fish can be taken to protect the growth and survival of Australian crayfish.
Autumn and Winter Check-in Challenge