Nowadays, there are many varieties of aquatic feed, so how should aquaculture farmers buy it? Based on years of experience in households, the author summarizes seven precautions and hopes to communicate with the majority of farmers and colleagues.
1. Pay attention to the credibility: we should choose the feed products produced by enterprises with good reputation and large scale. Because they have relatively strong capital and technical strength, they can guarantee the balanced nutrition of the feed, scientific formula and strong pertinence. If there is a feed specially designed for squid, white shrimp, etc., it is highly targeted.
2, pay attention to packaging: the standard feed mark is generally in the upper left corner of the feed packaging, respectively, indicating the product name, nutrients, production period, shelf life, instructions for use and other important content, the majority of farmers should read carefully when buying.
3, pay attention to the particle size: the size of aquatic feed is generally between 0.5-8.0 mm, used to raise aquatic products with different cracks. Basically, the particle size of the feed should be two-thirds of the longitudinal length of the mouth crack of the aquatic product. If the longitudinal length of the mouth of the farm is 9 mm, it is suitable for feeding feed with a particle size of 6 mm, which will not cause waste or affect feeding.
4, pay attention to color: the first sensory index of the choice of feed is a brighter luster and the color is consistent, which indicates that the feed is smashed better.
5, pay attention to the smell: good aquatic feed because of the use of fishmeal, generally have a normal fishy smell, smells more pleasant. If it is a poor feed, because of the use of some fishmeal substitutes, the fish smell is lighter, or not. In addition, bad feed may have a musty smell or "hala flavor", which indicates that the fat in the feed has been oxidized, and once this feed is fed, it may cause a large number of fish deaths.
6. Pay attention to the mildew: When the farmer chooses the feed, he must not choose the mold that has mildew or deterioration. This kind of feed is generally blue in color and uneven in color. In addition, do not choose the bonded feed, because some nutrients may change after bonding.
7. Pay attention to the stability: When purchasing aquatic feed, the farmer may wish to take a little feed to soak in the water for a period of time, observe its stability in water, and the feed with good stability is generally better.
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