Phospholipid Powder Wholesale Price,Influence on absorption and utilization

The absorption and utilization of phospholipids in feed by aquatic animals are affected by various factors, mainly including the following aspects:

I. Feed Factors

Phospholipid Types: Different types of phospholipids have differences in structure and properties, which affect their absorption and utilization. For example, lecithin and cephalin have different fatty acid compositions and polar heads. Aquatic animals generally have a better absorption of lecithin because its structure is more easily acted upon by digestive enzymes, and it has better solubility and emulsification in the intestine.

Phospholipid Content: Both too high and too low a content of phospholipids in the feed are not conducive to their absorption and utilization. If the content is too low, it cannot meet the needs of the growth, development, and physiological functions of aquatic animals; if the content is too high, it may lead to an increase in feed costs and may also cause problems such as fat metabolism disorders. Generally, the appropriate content of phospholipids in the feeds for different aquatic animals varies. For example, the phospholipid content in shrimp feed is usually around 2%-5%.

Feed Composition: Other nutrients in the feed will interact with phospholipids, affecting their absorption. For example, the content and proportion of proteins, carbohydrates, and fats will affect the secretion of digestive enzymes and intestinal peristalsis of aquatic animals, and thus affect the digestion and absorption of phospholipids. Excessive dietary fiber may adsorb phospholipids, reducing their utilization rate.

II. Factors of Aquatic Animals Themselves

Species and Growth Stages: Different species of aquatic animals have different digestive systems and physiological characteristics, resulting in differences in their ability to absorb and utilize phospholipids. Generally speaking, the demand and absorption ability of carnivorous fish for phospholipids may be higher than that of herbivorous fish. At the same time, aquatic animals have different demands for and absorption of phospholipids at different growth stages. The larval stage usually has a relatively large demand for phospholipids because phospholipids are crucial for the formation of the cell membrane and the development of the nervous system of the larvae. As they grow and develop, the demand will gradually change.

Health Status: The health status of aquatic animals directly affects their digestion and absorption functions. When aquatic animals are infected with diseases or in a state of stress, the activity of intestinal digestive enzymes decreases, and the intestinal mucosa is damaged, which will affect the digestion and absorption of phospholipids. For example, fish suffering from enteritis will have a significantly reduced absorption and utilization rate of phospholipids in the feed.

III. Factors of the Aquaculture Environment

Water Temperature: The water temperature affects the metabolism and digestive enzyme activity of aquatic animals. Within the appropriate water temperature range, as the water temperature rises, the metabolism of aquatic animals speeds up, the activity of digestive enzymes increases, and the efficiency of absorption and utilization of phospholipids improves. However, both too high and too low water temperatures will inhibit the activity of digestive enzymes and affect the digestion and absorption of phospholipids. For example, cold-water fish have a relatively weak ability to absorb and utilize phospholipids when the water temperature is low.

Water Quality: Indicators such as dissolved oxygen, pH value, and ammonia nitrogen in the water quality have an important impact on the health and digestion functions of aquatic animals. Low dissolved oxygen will lead to poor respiration and metabolic disorders in aquatic animals, affecting digestion and absorption. An inappropriate pH value will change the activity of digestive enzymes and the intestinal environment, and thus affect the absorption of phospholipids. Exceeding the standard of harmful substances such as ammonia nitrogen will cause damage to the liver, intestine, and other organs of aquatic animals, reducing their ability to absorb and utilize phospholipids.