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It is not necessary to add plasma protein powder in the teaching material. This issue has attracted a lot of netizens' attention and published different opinions on the pig forum (the original link address is http://bbs.powerpigs.net/showtopic-2415). .aspx), the following discussion of the netizens is organized as follows:
Iminu: When I read the magazine a few days ago, I learned that a good suckling pig teaches that the material is generally not allowed to release plasma protein powder. What is the reason?
Tian Chonglai: There is data showing that plasma protein powder is a new type of feed additive. Adding it to the teaching material should prevent diarrhea and diarrhea in piglets, increase appetite and feed intake of piglets, and not release plasma protein powder. Worth exploring
Salted fish: There is this possibility: if the plasma protein is not completely inactivated, it is equivalent to the poison, which has requirements for the production process.
Benqiang: One of the functions of plasma protein powder is to increase the protein content in the feed, and the protein content in the good teaching material is sufficient; when added, it will cause excessive protein intake and accumulation of protein decomposition products in the body. It will affect normal liver and kidney function. Excessive intake will increase the burden of liver and kidney, and it will also cause low immunity. Too much will easily cause piglet diarrhea.
Smile: Plasma protein powder is a powdered product made by spray-drying plasma after separation of red blood cells from animal blood (usually pig blood or bovine blood). It contains more than 78% crude protein, digestibility of more than 90%, and 8% lysine. The content of various amino acids is relatively balanced. It has the effect of preventing diarrhea and growth-promoting in early weaned piglets and is therefore widely used in feed for weaned piglets. According to the difference between animal blood type and processing process, it can be divided into the following four types: spray dried pig blood protein powder (SDPP), spray dried bovine blood protein powder (SDBP), spray dried sow blood protein powder (SDSPP), spray Dry low ash pig blood protein powder (LAPP).
It is not necessary to add it to the feed, but to add it in moderation. It is important to pay attention to the amount of control.
Tian Chonglai: Yes, there is a reporter interview in the "Agricultural Treasures". The chairman of the group, Liao Fanghong, has talked about this issue. The following is an excerpt from the interview:
Agricultural treasure book: Regarding plasma protein powder, the industry is more controversial.
Liao Fanghong: Yes, but the plasma protein powder is made of pig blood, saying that it has immunoglobulin, and the suckling pig loves to eat and not diarrhea. But can you guarantee that the pig's blood comes from healthy pigs? Where are the sick pigs? How complicated and serious are the sick pigs now, is it related to the use of plasma protein powder?
Why is the current pig disease all the year round? Because suckling pigs eat pig blood all year round. Plasma protein powder is used in the piglet feeds of most feed enterprises in the country.
Smile: So, the reason why the feed does not add plasma protein powder comes from its ingredients - blood, blood is the key point that should not use plasma protein powder, then if it is healthy, it should be OK. .
Huang Jianping: The main reason is that blood protein powder is likely to carry some viruses. Many experts are against it. They say that many farms are suffering from serious diseases on the farm due to the use of feed containing this raw material. And many epidemiologists can't cure it, and nutrition experts have checked out the problem. After stopping using this kind of feed, the disease is restored;
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For more netizens' voices, please visit http://bbs.powerpigs.net/showtopic-2415.aspx to view and welcome everyone to participate in the pig-multiple forum related activities.
Editor's comment: For the issue of plasma protein powder, the industry debate is also relatively large. The netizens of the pig forum have given different opinions and suggestions on this issue, and also reflected a question - whether the food is safe, it is understood that the plasma protein powder is One of the main animal protein feeds is a recognized high-quality protein source in the feed industry, but it is undeniable that plasma proteins are derived from animals. We all know that the role of plasma proteins are:
1. Relieve stress and promote growth.
2, enhance the palatability of the feed, have a certain role in attracting piglets, can effectively increase feed intake.
3. Plasma protein powder contains a variety of nutrients, its content and digestibility are high, and its palatability is good, so it can improve the whole price and balance of feed nutrition of piglets as a whole. Plasma protein powder is rich in a variety of functional proteins and unknown growth-promoting factors, which can enhance the digestive function of piglets, increase the secretion of digestive enzymes such as maltase and enzyme activity, thus effectively promoting the digestion and absorption of nutrients. Improve feed utilization.
The harm of plasma protein powder: Because it is made of pig blood, considering the process treatment problem, it can not completely guarantee that the pig blood comes from healthy pigs, otherwise it will easily cause the disease outbreak of the pig, as if it is a hidden bomb of the disease. In this way, since plasma protein powder is one of the indispensable feed ingredients for animal feed, it needs scientific and rational use. The specific measures are as follows:
1. Sub-objects and use in stages. Due to the high price of plasma protein powder, the current research and experiments are mostly in piglet feed, so the main target of plasma protein powder should be piglets. Because most of the factory pigs are weaned in piglets about 4 weeks after birth, the weaning syndrome, such as weaning stress, diarrhea, and growth stagnation, also occurs mainly in the early weaning period, while the main function of plasma protein powder is immunoglobulin and other activities. Immune substance. Immunoglobulins and other immune substances are sensitive to weaning syndrome in piglets, which can effectively alleviate these symptoms and promote the healthy development of piglets. Therefore, the use of plasma protein powder in piglets weaning for 1 week to 2 weeks is better, 3 weeks after weaning. - 4 weeks.
2. Use qualified preparations. At present, the research on plasma protein powder in China is still in the initial stage, and the processing technology of plasma protein powder is complicated. Most of the current plasma protein powder preparations are imported from abroad, and the quality is relatively reliable. Therefore, when using plasma protein powder, it should be based on imported products, and should pay attention to its nutrient content, especially the effective content of immunoglobulin.
3. The proportion of use should be scientific and reasonable. The price of plasma protein powder is high, and the reasonable use ratio can maximize the effect and economic benefits. Most recent experiments have shown that using 5% - 10% is more reasonable. From practical and comprehensive considerations, it is generally appropriate to use 5%-6% of plasma protein powder from 1 week to 2 weeks after weaning, and its effect and economic benefit are better; 2%-3 after 3 weeks to 4 weeks after weaning % can maintain good results. The actual use should also be flexibly adjusted according to the use of other protein sources such as fishmeal in the formula, the type of plasma protein powder, the breed of piglets, the number of weaning days, the weight and the feeding environment.
4. Use in combination. To achieve better feeding and economic benefits, plasma protein powder should also be used in combination with other substances. The combination of plasma protein powder and whey powder or skim milk powder can improve the nutritional fullness and availability of the feed and improve the palatability of the feed; the combination of plasma protein powder and antibiotics can improve the resistance of piglets to disease. Greatly reduce the weaning syndrome of piglets and improve feed utilization. In short, in the actual application of plasma protein powder, it should be flexibly controlled according to the composition of the formula and the feeding environment, and combined with additives commonly used in piglets for acid preparations, enzyme preparations, synthetic amino acids, antibacterial drugs, etc., in order to maximize The effect of the feed.
Since most of the functional proteins such as immunoglobulin and unknown growth factors in plasma protein powder are active substances, they are sensitive to temperature and other factors. Therefore, in addition to maintaining good mixing uniformity in the feed production process, attention should also be paid to the pressure. The temperature of the granule process should not be too high. Generally, the temperature of puffing and granulating should not be higher than 80 °C, so as to avoid protein denaturation and activity damage, and reduce the effect.
Plasma protein powder is a new type of protein resource reported and studied in the feed industry in recent years. The processing technology of plasma protein powder is to anticoagulate and cryopreserve the fresh blood of animals collected in the slaughterhouse, and then use special process. Spray dried, and the final plasma protein powder is a milky white or light brown powder product. Due to the special effects of plasma protein powder, it does reduce the incidence of diarrhea and increase daily weight gain and health. However, due to its high value, difficult processing technology, and shortage of supply, there is a large variation in quality on the product, and even the possibility of adulteration. Therefore, I will introduce the quality identification method of plasma protein powder as follows:
1. Since the true plasma protein powder is purely plasma spray dried, it should be 100% soluble in water, and since the protein content of the original plasma egg is only 68%-70%, it does not meet the above criteria. Impure, it is common to add soy protein isolate to increase plasma total protein content, but water solubility is worse.
2, many manufacturers can not completely separate the plasma and blood cells, so the color of the plasma protein powder is reddish. Because the blood cells are mixed in the plasma protein powder, the protein content of the plasma protein powder increases, but its value is greatly reduced, but the production The manufacturer's recycling rate is increased, so the cost is reduced. However, it was identified by a water-soluble test, the solution was reddish, and a substance insoluble in water was present.
3, individual manufacturers add non-protein nitrogen, can not be distinguished by the conventional non-protein nitrogen detection method, to analyze the total amino acid content to identify.
4. The imported plasma protein powder has a protein content of 78%-80%, which is based on the plasma protein powder, further reducing the coarse ash therein, thereby increasing the protein content, which requires special processes such as reverse osmosis treatment. The crude ash is removed, so the recovery rate is lower, the relative value is higher, and it can be sold at a higher price.
5, please note that there are individual manufacturers of products, the color is very beautiful, the protein content is relatively high, is a fake product, water solubility is not good, the solution is opaque.
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