Imported Phospholipid Raw Materials,the amount in aquatic animals

Due to differences in physiological characteristics, growth rates, metabolic patterns, and feeding habits, different types of aquatic animals also have varying demands for phospholipids. The following are the differences in the demands for phospholipids among some common aquatic animals:

I. Fish

Carnivorous fish: Such as sea bass and groupers. In their natural environment, they mainly prey on other small aquatic animals and have a relatively high demand for phospholipids. This is because they have a relatively fast growth rate and require a large amount of phospholipids to support rapid cell division and tissue growth, especially in tissues rich in phospholipids such as the nervous system and the retina. Studies have shown that the appropriate addition amount of phospholipids in the feed for juvenile sea bass is 2% - 3% to meet their growth and development needs.

Herbivorous fish: Such as grass carp and bream. They mainly feed on aquatic plants and have a relatively low demand for phospholipids. This is because plant-based feeds already contain a certain amount of phospholipids, and the growth rate of herbivorous fish is relatively slow, so their demand for phospholipids is not as urgent as that of carnivorous fish. Generally speaking, an addition amount of about 1% - 1.5% of phospholipids in the feed for grass carp can meet their basic physiological needs.

Omnivorous fish: For example, crucian carp and common carp. Their food sources are relatively diverse, including plant-based baits, animal-based baits, and organic debris. The demand for phospholipids of omnivorous fish is between that of carnivorous fish and herbivorous fish. Under artificial breeding conditions, the addition amount of phospholipids in the feed is usually controlled at 1.5% - 2% to ensure their normal growth and health.

II. Shrimps

Shrimps have a relatively high demand for phospholipids, especially in the juvenile shrimp stage. This component plays an important role in the growth, development, and reproduction of shrimps. The cell membrane structure and physiological functions of shrimps need it to maintain normalcy. At the same time, phospholipids also participate in the fat metabolism and energy transfer of shrimps. For example, the appropriate addition amount of phospholipids in the feed for juvenile Litopenaeus vannamei is 3% - 5%. As the shrimp grow, the addition amount of phospholipids in the feed for adult shrimps can be appropriately reduced to 2% - 3%.

III. Crabs

Crabs have different demands for phospholipids at different growth stages. In the crab seedling stage, due to their rapid growth, the demand for phospholipids is relatively high, and generally, the addition amount in the feed needs to reach 3% - 4%. As the crabs grow and reach the adult crab stage, the demand for phospholipids decreases, and the addition amount of phospholipids in the feed can be adjusted to 2% - 3%. The demand of crabs for phospholipids is closely related to their molting process. It helps with the formation and hardening of the new shells of crabs, improving the success rate of molting and the growth rate.

There are obvious differences in the demands for phospholipids among different types of aquatic animals. In aquatic breeding, it is necessary to reasonably adjust the addition amount of phospholipids in the feed according to the specific breeding species and growth stages to meet the nutritional needs of aquatic animals and improve breeding efficiency.