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Korean aquaculture feed industry overview

Class culture. Jade plate is used only part of the fish farms. As raw fish feed (MP feed) poor stability in water, and water will cause pollution. Coupled with high cost, making it the amount is limited. Recent years. Fish farmers began to feed in their MP to add feed. And the upward trend in consumption (Table 1). In 1988,[link widoczny dla zalogowanych], the amount of dry feed was 2%; up to 9% in 1993, and the remaining 91% of living fish (mostly wet,[link widoczny dla zalogowanych], frozen fish); and now, with feed use increasing. Meanwhile, the formula feed in recent years been widely used for freshwater and marine fish farming. Korea, 1998-2001 Table 1 Consumption of aquatic feed thousands of t Source: Ministry of Maritime and Fisheries (1998-2001); percentage. 1981 years ago, South Korea, fish farmers feed fish with a self-made. Carp feed products company first by DaehanSugar farmers under the orders of a production,[link widoczny dla zalogowanych], feed formulations can be in the domestic procurement of raw materials. In 1982, the company began production of goods and fish feeding table 2 Korea's main business of aquatic feed production in 2002 t Gao Ling: Granville Co., Ltd.. Li Mei: Information Centre of China Feed Industry Association, researchers. Global Liao Wang R Letter called ndWorldGlance34 feed Canton 2005 South Korea 14 Table 3 The fish feed production, 1993-2002, t material. Subsequently, many companies have started production of fish feed. South Korea fish feed production up 16 enterprises in 1998, the production of commercial fish feed production totaled 5.6540 million t, 2002, the registered fish feed production enterprises increased to 25, total output of 1O. 44,840,000 t (Korea Association of feed ingredients, 2003) (Table 2). 1993. South Korea carp feed production accounts for half of total production of fish feed. Was 5.2125 million t, eel feed for 1.3371 million t, trout feed for 1.1527 million t, flounder fishes and fish feed production touch Division were 6146t and 625t. However, carp feed production in 2002 was only 2315t, flounder fishes and fish feed production touch subjects were quickly rose to 16363t and 19110t (Table 3). Contains a lot of wet feed with the feed water stability of the well. Seems to be getting wet from the current pellet production of extruded pellets turn, but if the growth rate of farmed fish decline, then we should be used with caution. If extruded pellets can be used alone. Farmers can not only reduce pollution in order to reduce outbreaks of fish diseases contribute to significant savings but also the cost of farming. �� (from the WWW, aquafeed.corn, etc.) (Continued from page 26) 1O ~ 15 years ago, gave up a lot of equipment suppliers 3O years ago, the slow common law using a rapid method. Now coming back to using the slow method. Conditioner designed to make the introduction of the steam point is in close contact with the powder condensation occurs immediately, which requires the conditioner housing more than one inlet or have a longer gap for steam to enter, and these into air intake should be kept clear so that the steam into a lower speed so as not too quickly through the powder. Stirring shaft speed should be avoided below 8O turn / min. Stir to avoid bad and the powder is slow through. By replacing the drive belt and pulley, or installing variable frequency drive motor controller (VFcontroller) to change the stirring shaft speed. Need different speeds in different feeds, raw materials,[link widoczny dla zalogowanych], seasonal changes may also require different speed. In short. Stirring blade angle and speed of the shaft are interconnected rather than independent. 2.1.4 water of conditioning is the increase during the formation of granular materials play an important role in adhesion component. As described earlier. In a typical granulation process, the only added in the form of water vapor is added. In the U.S., most areas have at least 6 to 8 months of insufficient water during the granulation. In maize grains as the main areas in which each of the new corn comes there is always excess water. However,[link widoczny dla zalogowanych], as time goes by. Stored grain gradually reach the market. At this time of grain received relatively dry. The humidity should be about the best powder 16. O% ~ 17.5%. Of which 4% to 5% from the quenching process. Sometimes, if not to limit the level of humidity can not achieve the target temperature; have some time. Grain drier. The temperature is relatively high. If the temperature does not exceed the target this time to make sufficient quantities of steam into the powder. Comparison of dry cereal in the process of conditioning an increase of 1% to 2% of water can improve pellet quality and productivity. Quenched with water when the current problems have not been adequately studied. (Qin Chongde translation) ��