DMPT Basic Info.
Application object: freshwater fish: carp, crucian carp, eel, eel, rainbow trout, tilapia, etc.; sea fish: Pseudosciaena crocea, porgy, turbot, etc.; crustaceans: shrimp, crab, etc.
usage and dosage: 0.2-0.4g pure food is added to feed and 0.4-1g is recommended for fishing. It can be used in spring, summer and autumn when water temperature is high and hypoxia is mild. It has a good performance in low oxygen water, and has a large number of fish and a long duration.
residue problem: DMPT is a natural substance in aquatic animals, which has no residue problem and can be used for a long time.
Nowadays, the products of DMPT in the domestic market are mixed with fish and dragons. Many dishonest merchants often use similar products DMT as real DMPT. It is necessary to distinguish the concepts of DMPT and DMT Mechanism of DMPT
The chemical names are different: the chemistry of DMT is thietidine dimethylacetate, while that of DMPT is thietidine dimethyl - β - propionate; they are not the same compound or the same product at all.
Different production methods: DMT is synthesized by the reaction of dimethyl sulfide and chloroacetic acid in the presence of catalyst, while DMPT is prepared by the reaction of dimethyl sulfide with 3-bromopropionic acid (or 3-chloropropionic acid).
Different production costs: the real production cost of DMPT is much higher than that of DMT.
Different appearance and gas: real DMPT is white powder, while DMT is white crystal. Real DMPT has less fishy odor than DMT, which has unpleasant odor.
The effect of DMPT was better than that of DMT.
There are different forms in nature: real DMPT exists not only in seaweeds, but also in wild fish and shrimp, and widely exists in nature; while DMT does not exist in nature and is a pure chemical synthetic substance.
The flavor of aquaculture products is different
DMPT is a characteristic substance of marine fish which is different from freshwater fish. It is one of the flavor substances that marine products have seafood flavor (not freshwater fish flavor). The meat quality of fish and shrimp fed with real DMPT was close to that of wild fish and shrimp, but DMT could not.
1.Food attractant effect:Dimethyl - β - Timothy propionate (DMPT) can be stimulated by aquatic animals with low concentration of chemicals through olfaction. It can distinguish chemical substances and is very sensitive. The folds in its olfactory burr can increase the contact area between DMPT and the external water environment, so as to improve the olfactory sensitivity. Therefore, fish, shrimp and crabs have a strong physiological mechanism to attract DMPT. DMPT follows the unique habits of aquatic animals, so as to improve the feeding frequency of aquatic animals. As a growth promoting agent for aquatic animals, it can significantly promote the feeding behavior and growth of many kinds of marine freshwater fish, shrimps and crabs. The feeding stimulation effect of glutamine was 2.55 times higher than that of glutamine (glutamine was the best known stimulant for most freshwater fish before DMPT).
2.High efficiency methyl donor, promoting growth: The (CH3) 2S - Group on the molecule of dimethyl - β - thiazolidine propionate (DMPT) has the function of methyl donor, which can be effectively used by aquatic animals, promote the secretion of digestive enzymes in animals, promote the digestion of fish and the absorption of nutrients, and improve the utilization rate of feed.
3.To improve the ability of anti stress and anti osmotic pressure
It can also be used as an osmotic buffer to improve the endurance of aquatic animals to osmotic shock.
4.It has the similar effect of ecdysone
The results showed that the shelling rate of shrimp and crab was increased, especially in the middle and late period of shrimp and crab culture.
5.It has liver protection function
Dimethyl - β - Timothy propionate (DMPT) has liver protection function, which can not only improve the health status of animals, reduce the visceral / body weight ratio, and improve the edible ability of aquatic animals.
6.Improve meat quality
DMPT can improve the meat quality of aquaculture products, make fresh water varieties present marine flavor and increase economic value.
DMPT also has the health and antibacterial effects similar to allicin.