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3 Quality control and processing points
Quality control and processing are very important tasks, but unfortunately many feed companies do not pay attention. A good suckling pig formula, with good raw materials, without quality control and processing technology to ensure that still can not make a good suckling pig products. Recipe, raw materials, quality control, and processing are closely combined to produce good products. The six indicators for the implementation of national feed products, the laboratory of the feed factory must do it by itself, and other key indicators must also be regularly sent to the relevant units. In fact, I don’t spend any money or time, but I can get good results. For example, if zinc sulfate is produced in a certain place, if the heavy metal exceeds the standard, it can be sent once. Just go to the inspection channel and change the delivery channel. The Quality Control Department of Chia Tai Group is separated from the technical department and is independent. This is worth learning.
It is best to do a good job of measuring the starch gelatinization rate, soluble protein, fish meal freshness, peroxide value and some health indicators such as Salmonella.
The quality control and processing of suckling pigs are mostly the same as other pigs, and there is not much speciality. Only some heat-sensitive raw materials are used, and special attention should be paid to controlling the granulation temperature and the tempering time. The quenching and tempering temperature has a great influence on starch gelatinization. It is reported that there is a negative correlation between the tempering temperature and the degree of gelatinization. The greater the difference between the temperature of the granulator and the pellets, the higher the degree of gelatinization.
Suckling pig pellets can't be made too hard, too hard to seriously affect palatability. Throughout the whole process of feed processing technology, in addition to the feed formula, the processing processes that affect the hardness of feed pellets include: the crushing process of raw materials, the expansion and expansion process of raw materials, the mixing of raw materials, the addition of water, the fuel injection process, and the steam pre-conditioning process. The selection of the mold during the granulation process, the post-maturing, the post-spraying process, and the drying and cooling process. Among them, especially the steam quenching and tempering process, the quenching and tempering effect directly affects the internal structure and appearance quality of the particles. The longer the quenching and tempering time, the higher the starch gelatinization degree, and the denser the particle structure after forming, the greater the hardness. Due to the physiological characteristics of the digestive tract of the suckling pig and the digestibility of the feed, the starch gelatinization degree is required to be higher, so we need to reduce the hardness of the suckling pig material by other methods. Therefore, it is particularly important to choose a suitable compression ratio ring mode. Generally, the granulation ring mode compression ratio is 6-8. If the puffed material is used much, the compression ratio is 3, and the material obtained is crispy, but the powder rate is higher.
After the pulverized corn and soybean are pulverized, there is generally no problem with the particle size. Other commonly used raw materials are mainly corn and soybean meal. The particle size after pulverization has some influence on the digestion and absorption of suckling pigs. In general, the ability of piglets to chew feed is stronger than that of growing and finishing pigs. Whether corn or sorghum, whether crushed or crushed, the particle size does not affect the growth rate of piglets, but experiments have shown that the growth rate of barley with a grain size of 635 μm It is 5% higher than 768 microns and improves feed utilization, indicating that the effect of particle size on piglet performance is also related to the type of raw material. The effect of particle size on the digestion and absorption of nutrients is also related to the interaction between the model and the feed variety. The current research results show that from the comprehensive consideration of various factors, the particles are suitable from 400 microns to 600 microns.
If you are making powder, pay attention to mixing uniformity. Studies have shown that when the feed mixing variation coefficient of piglets is reduced from 106.5% to 28.4%, the average daily gain is increased by 41%, the feed utilization rate is increased by 18.52%, and the feed intake is increased by 18.33%. Therefore, the feed mixing time of weaned piglets should reach 4-6 min, and the coefficient of variation should be no more than 10% according to the requirements of China's compound feed standard to ensure that the feed is fully mixed and the nutrient composition is evenly distributed. Therefore, it is best to take two pulverization processes (mixed and smashed once), so that the appearance of the product is like a single raw material, and it is more uniform.
Recent studies have shown that the gelatinization rate of particles has a huge impact on animal performance. Some data show that increasing the gelatinization rate by 5% to 10% can increase the animal performance by 3% to 5%, and it has the same effect on suckling pigs.
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