How to choose the appropriate fish feed is very important for farmers. Because purchasing of feed is the largest proportion of the cost in the entire breeding, it’s the key to obtain the economic benefits of fish culture.
Firstly, selection of production enterprises: choose a large scale enterprises with good technical service, good reputation, and strong technical force. These enterprises have strong financial and technical strength to ensure that the production of feed formula and nutritional balance, conducive to the digestion and absorption of the breeding object, and promote their growth.
Secondly, selection of feed shape: there are two shapes of fish feed, powder and granular. Granular have soft particles, hard particles, and extruded particles. Choosing which shape depends on the feeding habits, feeding methods and so on. Like eel feed, which belongs to the powder, powder after water absorption was made into ball shape for feeding eel. But now it's starting to train feeding extruded fish feed.
Thirdly, selection of feed size: the size of the fish feed is generally between 0.5-8.0 mm, the particle size is basically the 2/3 of the longitudinal length of aquatic products. If the vertical length of the mouth of the breeding object is 9 mm, it is suitable for feeding the feed with particle size of 6 mm, neither waste nor effect on food intake. Farmers would better consult the dealer clearly, to avoid the loss due to improper use.
Lastly, selection of feed colours: generally good feed has bright luster, and the color is consistent, this sense index reflects the feed grinding strength is good, and with reasonable processing technology. Fineness of feed raw material requirement is high, good grinding fineness is conducive to digestion and absorption of fish, which is different from the local livestock and poultry feed. If the color of feed goes blue and being uneven, most of this feed is musty, especially in wet weather. In addition, can not buy the feed bonding together, there are some nutritional components may be changed after the feed bonding because of the formula ingredients, humidity, mixing and other processing reasons, which is not conducive to fish feeding.
