What Affects Fish Feed Pellet Quality?

As an important factor in scaled fish farming and aquaculture industry, fish feed production has the big effect on both fish growth efficiency and fish farming cost. Since the past decades, there has been an obvious increasing in the use of floating fish feed because it is a kind of high-quality environmental-protection fish feed with superior water stability, better floating properties, ease in digestion, less pollution and zero wastage of raw materials and high energy, all of which make it becoming the irresistible trend of aquaculture feed industry development. Here, Zeno pellet machine would proceed a discussion about which factor influcence fish feed quality.

In aquaculture and fish farm, the use of fish feed pellet has been more and more popular, so for fish farmers, especially for those who do not produce fish feed with fish feed extruder by themselves, it is crucial to know about how to distinguish the quality of fish feed pellets. Since fish feed accounts for 50-70 percents of aquaculture costs, and what’s more, fish feed has become the crucial source of nutrients for fish growing. Therefore, farmers choose a better “cost-effective” fish feed, which is an important factor in obtaining the best breeding benefits.

• Fish feed formulation: fish have their own characteristics at nutrient requirement for feed, for instance, fish can make the most of protein and fat in feed, but cannot absorb carbohydrate very well, and it is hard for fish to digest cellulose. Moreover, fish with different feeding habits have various needs on nutrient. So it is necessary to make scientific and nutritional formulation according to various fish growing demands. Only the nutrients in feed pellets consistent with fish needs can promote digestion and absorption and lower feed coefficient.
  
  
• Quality of feed ingredients: if the types, origin, grade, foreign matter content and storage conditions of feed ingredients are different, the difference of nutritional component will be large. Thus, feed ingredients have a direct effect on the nutrient composition and quality of fish feed pellets. Raw materials with good quality and high grade can be made into feed pellets achieving the perfect nutrition level, while the reverse is also true. In particular, the storing time of feed raw materials can greatly influence the nutrition of fish feed pellets.
  
  
• Processing technology of feed pellets: the particularity of fish feed has higher requirement on the processing technology, and the main indexes affecting processing quality contain grinding particle sizes, steam pressure of tempering and temperature. The thin particle size of raw material means the large surface area, which can acquire better tempering effect. The high curing degree and full gelatinization lead to pellets with good cohesiveness that is not easy to loose after entering water, all of which make feed pellets easier to digest and absorb.extrusion type fish feed pellet mill can do full gelatinization for the fish feed pellet .