How does aquaculture choose a good feed? The main sources of feed in aquaculture are natural food and artificial compound feed. Using these feeds in a reasonable and scientific way to feed fish can effectively promote the growth of fish. Today we have come to understand the method of selecting feed for aquaculture. :
The choice of aquafeed species: In terms of shape, it can be divided into powdered feed, soft pelleted feed, hard pelleted feed and extruded feed. In terms of use, there are squid, shrimp, and turtle. In order to select high quality and low price among a large number of aquafeeds, it is necessary to specify what kind of material to buy, 'fishing for fish'. If you are raising squid, you should buy squid material instead of using other materials, and you must also see whether it is broodstock or adult fish.
1, the appearance of choice. The quality of the feed can be judged by its appearance, and the quality of the feed can be recognized by the smell of the feed. From the odor on the identification of good feed, especially aquatic feed, because of the use of some fish meal, generally have a normal fishy smell, smell more pleasant. If it is a poor feed, because it uses some substitutes for fishmeal, the fishy smell is lighter, or simply not. In addition, bad feeds may show musty or 'hazy', which is actually the taste produced after the oxidation of fat. This kind of feed should not be fed because once the feed is fed, it may cause fish. A large area of ​​death.
2, stability choices. When buying aquafeeds, you may wish to take a little less and soak it in water for a while to see how stable it is in the water. Through stability, you can also see the quality of the feed.
3, reputation choice. To select feed products produced by companies with good reputation and large scale, they have relatively abundant funds and technical strength, can guarantee the balanced nutrition of feeds produced, scientific formulas, and can be targeted, for example, there are feeds specifically designed for squid. There is a feed specifically designed for grass carp that is highly targeted.
4, packaging options. When buying aquatic feed, don't neglect the label on the feed package. The feed label is generally at the upper left corner of the feed packaging, with the important contents such as the product name, nutrient composition, production period, and shelf life, respectively, and in particular instructions for use. So read it carefully when you buy it.
5, particle size selection. If you have any doubts, consult the distributors clearly to avoid losses due to improper use. Particular emphasis is placed on the size of the particle size when purchasing aquafeeds. Aquaculture feeds have a particle size of 0.5 to 8.0 mm and are fed separately with different mouthwaters. Basically, the particle size of the feed should be 2/3 of the longitudinal length of the split mouth of aquatic products. Take the head lice, for example, if the vertical length of the crack is 9 mm, then it is suitable for feeding feeds with a particle size of 6 mm, which will neither cause waste nor affect food intake. If you want to judge the quality of aquafeeds, you have to look at how they look.
6, color selection from the color to identify good feed: there should be a relatively bright luster and color is the same, this is the first sensory index of the choice of feed.
7, can not choose to produce mildew or deterioration of feed. Mild or deteriorating feeds are generally blue in colour and very uneven and inconsistent. This kind of feed should not be selected. Especially during the preservation process, due to the relatively humid weather in the south, it is easy to mold. Therefore, it is necessary to be careful when selecting feedstuffs, and it is generally not necessary to choose such a deteriorating feed. In addition to not selecting mildewed feed, sticky feeds should not be selected because of moisture, etc., which causes the feed to stick, and some nutrients may change after bonding.
There are a wide variety of aquafeeds on the market, and their pros and cons are not equal. Therefore, the selection of suitable and high-quality aquafeeds is a very important task in aquaculture, and it is also a key to the benefits of aquaculture.
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