Advice to Aquatic Feed Formulators

Have seen a lot of factory aquatic feed formula, reasonable not much, some is simply terrible, take this forum to colleagues put forward a few advice: 1, must pay attention to the balance of various indicators, especially digestible energy, digestible protein, essential amino acids 3 balance. Note that it does not refer to the balance of AA itself. In 99% of cases, only lys and met can be considered as essential amino acids. 2. Raw materials with poor quality should not be used as much as possible, such as domestic fish meal, corn protein powder, fermented feed, shrimp shell powder, squid viscera powder, etc. Additives with unclear effects should be used with caution, and no more than 2 kinds of ingredients should be used when necessary. 4. Do not add free amino acids. 5, calcium phosphate 2 to add enough, do not use calcium hydrogen phosphate instead. 6, bacterial protein does not exceed 4%, powder slurry protein does not exceed 6%, non-conventional raw materials are generally limited to use. 7, any single raw material is best not to exceed 30%, especially rapeseed meal, cottonseed meal. 8. Non-conventional raw materials are patents of large factories with detection ability and control supplier ability, and small factories should use conventional raw materials. 9. When making shrimp and crab feed, it is better to sacrifice nutritional indicators to ensure food attraction and water stability. If you can do these on the basis of ABC, there will be no major problems with the formula. I think of these items temporarily, and I'll think of them later: ) Chaos, a few of them are suspected of repetition [This post was last edited by zengehl on 2007-6-26 23:21]-------------------------------------- Collected! However, there are not many people who can do all these things, and sometimes they have to do it. All the friends who make aquatic products formula, please speak more!-------------------------------------- "The raw materials with poor quality should not be used as much as possible, such as domestic fish meal, corn protein powder, fermented feed, shrimp shell powder, squid viscera powder, etc." I don't think so. The use of these raw materials is very common. The key is to grasp their quality! Unless you recommend a formula for a small factory without detection capability!-------------------------------------- The original post was published by zouyr on March 8, 2007 at 13:21,"raw materials with poor quality should not be used as much as possible, such as domestic fish meal, corn protein powder, fermented feed, shrimp shell powder, squid viscera powder, etc." I don't think so, the use of these raw materials is very common, the key is to grasp their quality! Unless you give no detection ability of small factories do recommended formula! Because "the key is to grasp its quality!", Therefore, it is necessary to "use raw materials with poor quality as much as possible", and the more "small factories without detection ability", the more we must adhere to this principle. In my experience, using too much of this material is bound to cause problems. Some people will say that these raw materials are cheap, but the premise of "cheap" is genuine goods, fake and shoddy things cost-effective good? Advice 8, unconventional raw materials are the ability to detect, have the ability to control suppliers of patents, small factories should use conventional raw materials. Explanation: Large factories with large purchases have the advantage of raw material cost. Small factories should not expect to compete with large factories for raw material cost. Cheap things often have poor cost performance. The advantage of a small factory lies in its low cost (management, sales, labor). [This post was last edited by zengehl on 3/8/2007 16:25]-------------------------------------- Raw materials with poor quality should not be used as much as possible, such as domestic fish meal, corn gluten meal, fermented feed, shrimp shell powder, squid viscera powder, etc."-------------------------------------- It makes sense, feed to do this, back to the past, energy, amino acids, minerals, vitamins, lipids, moisture, this is important, additives are more to give psychological comfort!-------------------------------------- [7. It is best not to exceed 30% of any single raw material, especially rapeseed meal and cottonseed meal.] People who know Weihai probably don't think so. Some of Tongwei's materials are darker than rapeseed meal. It is estimated that rapeseed meal has added more than 40%--------------------------------------The addition of synthetic amino acids did not show growth promoting effects. Some people think that the added free amino acids cannot be absorbed synchronously with the amino acids decomposed from feed protein and cannot participate in the synthesis of protein, so adding synthetic amino acids to feed has no effect. However, there are also data showing that appropriate addition of the first restrictive amino acid can promote growth and save protein. The lysine content was increased to 1.7% by adding HCl lysine to the feed containing 25% crude protein and 1.35% lysine. The results showed that the weight gain, energy deposition rate and protein deposition rate of carp were increased by 46.6%, 17.9% and 54.8% respectively. The growth, protein deposition and feed efficiency of carp were improved by adding 0.25% methionine to soybean meal diet, but the growth of carp returned to the control level when methionine was added to 0.5%. From the current data point of view, fish and shrimp are able to use free amino acids, but the use of conditions are more stringent. First of all, it is necessary to confirm that the first restrictive amino acid is added, and the energy-egg ratio of the feed is relatively high, and the daily feeding frequency is more, preferably up to 5 times. Only when these conditions are met can the added synthetic amino acids function. It can be seen that adding free amino acids to fish and shrimp feed has specific requirements for the quality and feeding of feed, so it must be carefully considered when deciding whether to use it, and investigate the feeding methods of users to avoid unnecessary waste. According to foreign reports, amino acids coated by protein, the utilization rate can be increased by 2 to 4 times, so when adding uncoated amino acids, the real cost should be at least 3 times the unit price. In this way, it is often not cost-effective, or the cost reduction is very small. Personally, I think it's better not to add it. -------------------------------------- And it can't be more than 30%. -------------------------------------- Thank you very much for your generosity! I think a lot of people are thinking this way too. Can there be innovation today? Experience often rigidifies our minds. Further research and discussion are needed on the limited use of raw materials, the effective utilization of monomer amino acids, and the digestion and utilization of some unconventional raw materials.