Bulk Order Phospholipids,add amounts in aquatic animal feed

The formulation basis for the addition amount of phospholipids in aquatic animal feeds mainly includes the following aspects:

I. Types and Growth Stages of Aquatic Animals

The demands for phospholipids vary among different types of aquatic animals. For example, the demand for phospholipids in shrimps is generally higher than that in fish. This is because the cell membrane structure and metabolic characteristics of shrimps require more phospholipids to maintain normal physiological functions.

The demand for phospholipids of the same aquatic animal also differs at different growth stages. Aquatic animals in the larval stage usually require a higher addition amount of phospholipids. This is because they have a fast growth rate and frequent cell divisions, and need more phospholipids to construct cell membranes and synthesize bioactive substances. As the aquatic animals grow, their demand for phospholipids will gradually decrease.

II. Composition of Feed Ingredients

If the feed contains a large amount of plant-based protein sources, such as soybean meal and rapeseed meal, since the phospholipid content in plant-based proteins is relatively low, and the phospholipids in plant cell membranes have a different structure from those in animal cell membranes, the bioavailability may be relatively low. Therefore, it may be necessary to add a relatively large amount of additional phospholipids to meet the needs of aquatic animals.

When the fat content in the feed is high, appropriately increasing the addition amount of phospholipids can promote the emulsification and absorption of fats, improve the utilization rate of fats, reduce the deposition of fats in the liver and intestines, and thus reduce the risk of diseases such as fatty liver in aquatic animals.

III. Aquaculture Environment Factors

In stressful environments such as poor water quality, low water temperature, or high aquaculture density, the immunity and metabolic functions of aquatic animals will be affected to a certain extent, and their demand for phospholipids will correspondingly increase. Phospholipids can enhance the stability of the cell membranes of aquatic animals and improve their stress resistance. Therefore, in such cases, it is necessary to appropriately increase the addition amount of phospholipids.

For example, in a low-temperature environment, the metabolism of aquatic animals slows down, the activity of digestive enzymes decreases, and the ability to digest and absorb nutrients in the feed declines. At this time, adding an appropriate amount of phospholipids can improve the digestion and absorption of fats, provide sufficient energy for aquatic animals, and maintain their normal growth and physiological functions.

IV. Types and Quality of Phospholipids

Different types of phospholipids, such as lecithin and cephalin, have different biological functions and bioavailability. Generally speaking, lecithin contains more choline and unsaturated fatty acids, which play an important role in the growth and development of aquatic animals, and its addition amount may be relatively high.

The quality of phospholipids also affects its addition amount. High-quality phospholipid products have high purity, few impurities, and good biological activity, so the addition amount in the feed can be relatively low. However, low-quality phospholipid products may contain more impurities and oxidation products, which will affect their biological functions. It is necessary to increase the addition amount to achieve the same effect, but excessive addition may have a negative impact on aquatic animals.

V. Aquaculture Costs and Economic Benefits

When formulating the addition amount of phospholipids, it is also necessary to consider aquaculture costs and economic benefits. Phospholipids are relatively expensive, and excessive addition will increase feed costs and reduce aquaculture benefits. Therefore, on the premise of meeting the nutritional needs of aquatic animals, it is necessary to determine the optimal addition amount of phospholipids through experiments and production practices to maximize economic benefits.

Determining the addition amount of phospholipids in aquatic animal feeds requires comprehensive consideration of multiple factors, including the types and growth stages of aquatic animals, the composition of feed ingredients, the aquaculture environment, the types and quality of phospholipids, and aquaculture costs. The most appropriate addition amount should be determined through scientific experiments and practices to improve the growth performance, immunity, and aquaculture benefits of aquatic animals.