Detailed Explanation of the Characteristics and Usage Methods of Micro Particulate Feed

Micro particulate feed can generally be divided into 3 types: micro-bound feed, micro-coated feed, and micro-encapsulated feed.
　　
Micro-bound diet (MBD for short)
Micro-bound feed is made by finely pulverizing the feed ingredients, then formulating and mixing them according to the nutritional requirements of the fry and juveniles, and after they are uniform, adding diluted binder, stirring fully and mixing evenly, drying, finely pulverizing, and sieving, to produce micro particulate feed with a particle size generally of 100-300μm (generally 50-150μm for fish larvae).
Micro-bound feed uses a binder to bind the raw materials together, so as to maintain the shape of the bait and its stability in water, making it easier for larvae of fish, shrimp, crabs, and other aquatic animals to feed on it, improving feed utilization efficiency, and preventing water quality deterioration. The binder should have the characteristics of low price, small dosage, non-toxicity, wide availability, simple processing, no effect on the absorption and digestion of nutrients by larvae of fish, shrimp, crabs, and other aquatic animals, good binding effect, and strong stability in water. Commonly used binders include casein, zein, sodium alginate, carrageenan, agar, gelatin, and nylon-protein.
　　
Micro-coated diet (MCD for short)
Micro-coated feed is a feed in which micro-bound feed is wrapped with a coating, which can improve the stability of the feed in water. The particle size is generally 10-300μm. The coating components are generally zein, nylon-protein, lecithin, etc.
　　
Micro-encapsulated diet (MED for short)
Micro-encapsulated feed is a feed made by wrapping liquid, gel-like, paste-like, or solid feed ingredients that do not contain a binder with a coating, and the particle size is generally 10-300μm. Depending on the type of coating used, the properties of the resulting particles also differ. The stability of this feed in water is mainly maintained by the coating. The coating components are generally nylon-protein, gelatin, egg protein, etc.