L-threonine Wholesale Price,In Aquaculture Feed

L-threonine is an essential amino acid for aquatic animals, and its application in aquaculture feed has a significant impact on the growth, health, and feed utilization of aquatic organisms.Here is a detailed introduction to its application effects and precautions:

Ⅰ.Application Effects

1. Promoting Growth

·Enhancing Protein Synthesis:L-threonine participates in the synthesis of body proteins in aquatic animals.It provides the necessary amino acid building blocks, which helps to increase the deposition of muscle proteins, thereby promoting the growth and development of fish and shrimp.For example, in tilapia culture, adding an appropriate amount of L-threonine to the feed can significantly increase the weight gain rate and specific growth rate of tilapia.

·Improving Feed Utilization: By supplementing l-threonine, the balance of amino acids in the feed can be optimized.This allows aquatic animals to more efficiently utilize the nutrients in the feed, reducing feed waste and improving feed conversion efficiency.  In shrimp culture, studies have shown that when the l-threonine level in the feed is properly adjusted, the feed conversion ratio of shrimp can be improved, which means that less feed is needed to achieve the same growth effect.

2. Enhancing Immune Function

·Strengthening the Immune Barrier: L-threonine is involved in the synthesis of immunoglobulins and mucins in aquatic animals.  Immunoglobulins play a key role in the body's immune response, helping to identify and neutralize pathogens.  Mucins, on the other hand, form a protective mucous layer on the surface of the digestive tract and gills, preventing the invasion of pathogens.  For example, in the culture of crucian carp, adding l- threonine to the feed can increase the content of immunoglobulins in the fish serum and enhance the immune function of the fish.

·Regulating the Immune Response: It can also regulate the activity of immune cells in aquatic animals, such as macrophages and lymphocytes.  By enhancing the phagocytic ability of macrophages and promoting the proliferation and differentiation of lymphocytes, l-threonine helps aquatic animals better respond to pathogen infections.  In the case of grass carp, studies have found that appropriate l-threonine supplementation can improve the immune response of grass carp to bacterial infections, reducing the incidence of diseases.

3. Maintaining Intestinal Health

·Promoting Intestinal Development: L-threonine is beneficial for the growth and development of the intestinal mucosa in aquatic animals.  It can increase the height of the intestinal villi and the density of goblet cells, thereby increasing the absorption area of the intestinal tract and improving the digestive and absorptive functions of the intestine.  In the culture of juvenile seabass, the addition of l-threonine to the feed has been shown to promote the development of the intestinal mucosa, making the intestinal villi longer and more regular, which is conducive to the absorption of nutrients.

·Regulating Intestinal Microflora: It helps to maintain the balance of the intestinal microflora in aquatic animals.  By promoting the growth of beneficial bacteria such as Lactobacillus and Bifidobacterium, and inhibiting the growth of harmful bacteria such as Escherichia coli and Vibrio, l-threonine creates a beneficial intestinal micro - ecological environment.  This is important for the health of aquatic animals, as an imbalance in the intestinal microflora can lead to various diseases.  For example, in the culture of crayfish, adding L-threonine to the feed can regulate the composition of the intestinal microflora, increase the relative abundance of beneficial bacteria, and improve the overall health of crayfish.

Ⅱ.Precautions

·Proper Dosage: The appropriate dosage of L-threonine varies depending on the species, growth stage, and feed composition of aquatic animals.  Generally, it is necessary to determine the optimal addition amount through experiments.  Excessive addition not only increases the cost of feed but may also have adverse effects on the growth and health of aquatic animals.  For example, in the culture of juvenile shrimp, if the dosage of L-threonine is too high, it may lead to abnormal molting and reduced survival rate of shrimp.

·Feed Compatibility: When using L-threonine, it is necessary to consider its compatibility with other feed ingredients. Some ingredients in the feed, such as certain amino acids and minerals, may interact with l-threonine, affecting its availability and the overall nutritional balance of the feed. For example, excessive levels of methionine may compete with L - threonine for absorption, so the ratio of amino acids in the feed needs to be carefully adjusted to ensure the best utilization of l - threonine.

·Quality Control: The quality of l-threonine products can affect their application effects. It is necessary to choose high-quality l-threonine products from reliable manufacturers to ensure their purity and stability. Poor-quality products may contain impurities or have low biological activity, which will not achieve the expected results. For example, if the l- threonine product is contaminated with other substances, it may cause unknown effects on the growth and health of aquatic animals.

·Feeding Management: In addition to adding l-threonine to the feed, proper feeding management is also crucial. This includes reasonable feeding frequency, feeding amount, and water quality management. Maintaining good water quality can ensure the normal growth and metabolism of aquatic animals, so that they can better utilize the nutrients in the feed, including l-threonine. For example, if the water quality is poor, the appetite and absorption capacity of aquatic animals will be affected, and even if the feed contains sufficient l-threonine, its effect cannot be fully exerted.

·Feed Compatibility: When using l-threonine, it is necessary to consider its compatibility with other feed ingredients.  Some ingredients in the feed, such as certain amino acids and minerals, may interact with l-threonine, affecting its availability and the overall nutritional balance of the feed.For example, excessive levels of methionine may compete with L - threonine for absorption, so the ratio of amino acids in the feed needs to be carefully adjusted to ensure the best utilization of l-threonine.

·Quality Control: The quality of l-threonine products can affect their application effects.  It is necessary to choose high-quality l-threonine products from reliable manufacturers to ensure their purity and stability.Poor-quality products may contain impurities or have low biological activity, which will not achieve the expected results.  For example, if the l- threonine product is contaminated with other substances, it may cause unknown effects on the growth and health of aquatic animals.

·Feeding Management: In addition to adding l-threonine to the feed, proper feeding management is also crucial.  This includes reasonable feeding frequency, feeding amount, and water quality management.  Maintaining good water quality can ensure the normal growth and metabolism of aquatic animals, so that they can better utilize the nutrients in the feed, including l-threonine.  For example, if the water quality is poor, the appetite and absorption capacity of aquatic animals will be affected, and even if the feed contains sufficient l-threonine, its effect cannot be fully exerted.