Four factors to reduce the fish feed coefficient
Fish species
Establish a standardized seed breeding base. First of all, to ensure the purity and quality of the parent, and then use the differences between the individual and species, select and breed fast-growing, disease-resistant, delicious meat, nutritious, strong adaptability to the environment of the breed.
Feed quality
Measure the merits and demerits of feeds, nutrients and water stability. Therefore, the improvement of feed quality includes the two major components of feed nutrients and feed processing technology.
Fish feed must be full price. The feed formula should be fully balanced according to the nutritional needs of the fish. If there is not enough nutrients in the feed and it cannot be digested and used by the fish, it will not only affect the growth of the fish, but also cause the feed not to be deposited by the fish and deposit the bottom of the pool. Water quality deteriorated.
Feed processing technology is also a key part of improving feed quality. At present, due to the non-standardization of domestic feed processing technology, the physical properties and nutrient composition of feed produced by each manufacturer are different even in the same formulation. Therefore, in order to obtain high-quality feed, it is necessary not only to have a scientific and reasonable feed formula, but also to configure a well-efficient feed processing technology. The processing quality of feed includes its physical properties such as particle size, shape, length, evenness, hardness, density, etc., as well as its physicochemical and biochemical properties, such as feed during smashing, mixing, extrusion rolling, heating, boosting, etc. , Also accompanied by the gelatinization of starch, the modification of macromolecule nutrients, the inactivation of harmful Enzymes, and the complementarity between various nutrients. Good processing technology can greatly improve the quality of feed, enhance shape retention and stability, and can reduce the loss of nutrients in water, and make nutrients such as proteins and sugars more easily digested and used by fish, and enhance their palatability. Sexuality and digestibility, thus improving the efficiency of feed utilization and reducing the feed coefficient and cost.
Water quality
Aquaculture water needs to meet various needs of fish, and should have appropriate water quality conditions, the most important of which are: containing appropriate amounts of dissolved salts; rich dissolved oxygen, almost saturated; containing appropriate organic substances; non-toxic; pH value Near 7, it is neutral or slightly alkaline. Therefore, according to the needs of environmental protection and protection of aquatic resources, the specific indicators of the relevant projects shall be further stipulated as "fishery water quality standards" and promulgated and implemented in the form of decrees.
Control feeding
Feeding technology is the key to reducing the feed coefficient after fish species, feed and water quality are solved. First of all, we must understand the aquatic life of fish and the characteristics of the lower-temperature animal, and determine that it is different from the characteristics of terrestrial and higher-temperature animals, livestock and poultry. 80% to 100% of the fish's satiation is suitable for feeding, usually 90% of the satiety is the optimum feeding amount, so as to not only cause feed wastage, but also ensure rapid growth of fish. To sum up, we must deal with and coordinate the above issues in order to reduce the feed coefficient and obtain the highest profit with the lowest investment.
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