Your prawns are uneven in size because you didn't do this step well
At present, the shrimp series in South China mainly include recirculating aquiculture penaeus vannamei, Penaeus monodon and Penaeus japonica, among which penaeus vannamei feed is gradually increasing because of the growing area of cultivation and sales. The crude protein content of Penaeus japonicus diet was higher than that of Penaeus monodon diet, and that of Penaeus monodon diet was higher than that of Penaeus monodon diet.
Choose prawn feed commonly used relatively simple method, is a look at two smell three taste four test water. To really see the effect and difference, but also compare the breeding effect, bait coefficient, after-sales service and so on.
Take a look at the appearance of the shrimp
Good prawn feed particles uniform, smooth surface, smooth incision, low powder rate; The color is uniform. The evenly grained prawn feed helps to evenly distribute prawn intake in the pond. It helps to avoid uneven growth of prawns. The feed with low powder rate has less pollution to water body and higher utilization rate of feed. The uniformity of color and luster proved that the raw materials were crushed evenly, matured and conditioned completely, and the water content was balanced in the feed.
Smell the smell of shrimp
Shrimp feed protein composition is relatively high, good shrimp feed has the fishy smell of fish meal, or similar to vegetable oil fragrance, personal sense is different, feel the thickness of the fragrance is not the same. The poorer feed is likely to have either a pungent, flavorless smell or a bland, husky smell of flour.
Three taste the shrimp seasoning
Of course, the taste of human perception is different from that of shrimp. The purpose of oral taste is to check whether the shrimp material is fresh and whether it has gone bad. Because some shrimp material is on the pigment, from the appearance is very difficult to see.
Four test the waters
The water test is to test the stability of shrimp material in water. Take a handful of shrimp material placed in the water cup, fill the water, after 30 minutes to take out a few grains with your hand to pinch, slightly softened is better feed, there is no softening of the raw material conditioning process problem. After 3 hours to observe the feed is still in the cup, still maintain the shape of particles do not break for the good feed. Any premature break or difficult to soften the feed in the processing technology are insufficient.
The above four points belong to the nature of experience, some shrimp materials may not be the best technology, but the nutritional technology formula is very good. Farmers value more or breeding effect, a prawn feed is good, aquaculture farmers after the shrimp grow fast, grow evenly or not even, bait coefficient is low, this can really confirm the feed quality. Veteran shrimp farmers are willing to experiment with different feeds, despite these four points. According to one farmer, who did not want to be named, changing the feed may be more successful if the aquaculture pattern is different. Think about it carefully, it is really a bit of truth, each prawn feed manufacturers feed processing technology is different, nitrogen, phosphorus and other elements in the control of the use of different breeding modes must be different. Many farmers believe that there is a difference in the bait coefficient of the same prawn feed between the high density cement pond and the low density soil pond.
Now prawn feed manufacturers tend to do high-grade feed, and pay more attention to after-sales service, technical support and other work, in their view aquaculture prawn to succeed, in the current water pollution is more serious. When the market price is low, shrimp farming can still make money, and the farming mode is the key. Now the production of shrimp material manufacturers are many, there is no much can be picky in the appearance of the character. What distinguishes each manufacturer is the difference in formula technology and after-sales service. In the process of sales practice, the difference in formula technology is the advantage in bait coefficient and growth uniformity, which often needs to be reflected through good after-sales service. Helping aquaculturists improve shrimp farming practices so they can make money is a top priority for feed sellers.
From this point of view, feed manufacturers pay attention to aquaculture service is and farmers value the effect of feed use has a larger intersection. Only when the feed manufacturer provides information and technology to help the shrimp raiser improve the breeding mode, and uses the company's feed to raise shrimp in the best way and produces good economic benefits, can it be considered that the shrimp raiser has bought a better feed.
