Digestibility is the first criterion for the selection of protein material in weaned piglets, and other indicators are secondary. Because the digestibility of weaned piglets is very low, especially the ability of protein digestion is extremely low, resulting in various common digestive problems The direct and indirect reasons are also caused by protein indigestion. Amino acid ratio The proportion and content of amino acids is the second major indicator for the selection of protein ingredients for weaned piglets. Consider lysine, sulfur amino acids, threonine, tryptophan, and histidine. The best choice is the proportion and height The content of raw materials. The high-quality protein material that degrades to produce small peptides is quickly degraded into short peptides in the gastrointestinal tract of suckling pigs and quickly absorbed. This property of protein material is an extension of the digestibility characteristics and an important indicator of protein material. Protein content Try to find protein materials with high nutrient content, which is an important way for the weaned pigs to get as much nutrition as possible and increase daily weight gain in the context of limited feed intake. Costs Protein/Price High-quality protein raw materials, on the one hand, are subject to competition for baby food prices, and the supply is limited, so the price is not low. To evaluate this standard, we must compare the benefits and prices of pigs that this raw material may create. Instead of simply measuring the impact of raw material prices on the price of feed products.
First, you can choose raw materials and comments
1. The digestibility of plasma protein plasma protein powder, the amino acid composition, and the rate of degradation and small peptide production are all the first. It is a high-quality protein source for weaned piglets, and homologous plasma protein powders are more effective. It contains small peptides and amino acids that are close to the pig's amino acids.
2. Dairy products Dairy products are mainly based on milk proteins, but there are few feeds available. Normally, whey powder, which is commonly found in high protein content, is mainly consumed as human food. Its supply is limited and it cannot be used in feeds.
3, fish: fish meal, fish sauce, fish dissolved fish products, fish meal digestibility, amino acid composition and protein content, are high-quality protein raw materials. In addition to common fishmeal, the by-products of fish processing: fish sauce and fish sauce are also good.
4, beer yeast Brewer's yeast supply is limited, but it is a special protein raw material, in addition to its effective amino acid content and good digestibility, it is also rich in B vitamins and some metabolism necessary nutrients, so Use in weaned piglets has a special effect. However, at the beginning of the feeding, the pigs may refuse to eat because of its special smell.
5, soy bean products is the most abundant source of protein. The choice of feed for piglets also varies greatly. The common soybean meal is mainly because its digestibility does not meet the requirements of milk piglets, and it also contains high anti-nutritional factors. Soy protein isolates have a high protein content, but they may have higher anti-nutritional factors. To use the process of enzymatic degradation, all water-soluble, we must pay attention to the taste, because some products by enzymatic degradation, there will be Kuari peptides, may affect the palatability. Soy Protein Concentrate, Soybean meal is soaked in hot alcohol and some of the polysaccharides are removed. This is equivalent to concentrating protein and is therefore of higher value than regular bean meal, but its digestibility is still limited. Fermented soybean meal and fermented soybean meal have greatly improved digestibility, protein content, and anti-nutritional factors. Therefore, fermented soybean meal may be the raw material of choice for future piglet feeds. The root cause is the difference in digestibility.
6, wheat, rice, potatoes, peas, beans protein
The above protein material. Amino acid composition is very balanced, there is no anti-nutritional factor, digestibility is good, the only problem is the lack of supply, the supply is often unstable.
Second, the impact of protein raw materials on feed quality and coping strategies
1. The difference in digestibility of raw materials for feed intake has a great impact on feed intake, and improving feed digestibility is the key to improving feed intake of lactating piglets. Therefore, the quality control part of the feed company must strictly test and control the digestibility of feed ingredients, especially protein ingredients.
2, the incidence of diarrhea indigestion feed, after passing through the small intestine into the large intestine, is a good growth medium for large intestine bacteria, resulting in rapid colonization of bacteria in the large intestine, which is the main cause of diarrhea in piglets.
3. The daily increase of the daily growth of the piglets has a good performance after the feed has been digested, absorbed and re-deposited, and the daily gain of this stage has extraordinary significance for the whole growth performance of the commercial pigs.
4. Weaning Stress Weaning stress is a key link in the overall benefit of a pig. The feed at this time also involves the digestibility of raw materials, and particularly requires palatability.
Third, the feed formula strategy under different cost requirements
1. High protein, high amino acid content, low monomeric amino acid This is the most ideal piglet feed program. The general protein design is 24%-25%. The piglet feed designed with this program will get pigs in pig production. The high production performance, such programs, require high-quality feed ingredients, the general plasma protein powder, dairy products, the main problem is that the cost is too high.
2. Protein, High Amino Acid Content, Low Monomer Amino Acids The pigs produced in this program can also obtain very good production performance. This is also the current common solution for commercial feeds for dairy pigs. The general protein design is about 21%.
3. Proteins, high amino acid content, and high monomeric amino acids have a lower utilization efficiency of monomeric amino acids for weaned piglets than for small peptides. However, as long as sufficient amino acid is designed to achieve moderate protein, the selectivity to protein materials is large. Therefore, the cost is reduced by a lot, but this kind of plan is much less effective than the second plan.
4. Low protein, medium amino acid content, and low monomeric amino acids are limited to the pressure on the digestibility of protein raw materials. Some people use such a program to achieve medium to high production performance in production. The advantage of the program is that the cost of feed is much lower. Many difficulties in the production of dairy pigs have been reduced so much. When the first and second options are not reached, this solution is also good. To adopt this solution, we must pay attention to all means to increase the intake. Have good production performance
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