How to distinguish the quality of crab feed?

It is difficult to distinguish the quality of feed directly through the senses. Generally speaking, you need to compare:

1, look: first, look at whether the feed has a product quality certificate. The second is to see if there is a feed label. The feed label is located at the sealing part of the packaging bag, and its standard is formulated and issued by the State Bureau of Quality and Technical Supervision. Production enterprises must label feed products, and feed without labels cannot be operated according to relevant regulations, let alone purchased. Third, look at the shelf life. Shelf life is one of the contents indicated on the feed label. Do not buy any compound feed that exceeds the shelf life and is not marked with the shelf life. Fourth, look at the color of raw materials. According to the color of raw materials, we can roughly judge whether the feed is stable, but color is not the only criterion to determine whether the feed is good or bad. Let's see if the color is uniform, the particle size is uniform, and there is caking and mildew.

2. Smell: Various flavoring agents are commonly used in feed to adjust the palatability of animals. Therefore, don't judge the dosage of a certain raw material according to the smell. It is necessary to remove the smell of perfume and smell whether there are other smells, such as moldy smell, oil smell, distiller's grains smell, ammonia smell (formed by non-protein nitrogen such as urea) and other smells. A good product can smell its unique fragrance.

3, taste: high-quality products (mostly compound feed) are sweet and delicious, no sore throat, no bitterness, no odor.

4. Feed: Good feed has good palatability, and sometimes it doesn't even need transition. It can be eaten directly after refueling. Otherwise, most people don't eat or even refuse to eat unless they are sick.

5, defecation: high-quality feed does not diarrhea after eating, into a strip, the color is dark yellow and slightly black, the surface is shiny, and the ground is tower-shaped. If it is spherical or too dry, it means that the fiber content or drug content in the feed is too high. Diarrhea (except transitional period and disease phenomenon) indicates that there is something wrong with the raw materials in the feed, so don't continue feeding. However, some feeds will not appear loose stool after eating, so they can be fed when they should not grow.

6. Length: The good feed grows obviously after feeding for half a month, or the daily gain is better than other feeds.