Anti-nutritional factor — the invisible killer in piglet feed
Almost all feed materials contain anti-nutritional factors, especially plant materials. Feed with high levels of anti-nutritional factors may have adverse effects on the production performance and health of livestock and poultry. Although soybean products are the source with the most abundant feed protein at present, they contain a variety of anti-nutritional factors, which leads to allergic diarrhea and even death of piglets. Anti-nutritional factor — the invisible killer in piglet feed. What is it?
1 Anti-nutritional factors in soybean meal
Anti-nutritional factors are substances that have adverse effects on the digestion, absorption and utilization of nutrients in feed. At present, the common anti-nutritional factors in actual production include protease inhibitor, phytic acid, tannic acid, mycotoxin, etc. They destroy or hinder the digestion and utilization of nutrients, and affect the growth of piglets.
Soybean meal is mainly used as protein feed to provide protein for pigs. Although it is nutritious, it contains many anti-nutritional factors, mainly including non-protein anti-nutritional factors (such as phytic acid, oligosaccharide) and protein anti-nutritional factors (such as trypsin inhibitor, soybean antigen protein, urease). Different factors have different anti-nutritional effects.
Suggestion: optimize the formula to ensure the amount of soybean meal for piglet feed does not exceed 15%.
2 The effects of high levels of anti-nutritional factors
Feed with bad palatability may decrease the appetite of piglets. Feed intake will decrease, growth will stagnate, and diarrhea will get worse. Improving the palatability of feed is the most direct and effective way to improve the feed intake, but there are many factors that affect the palatability: feed flavor, anti-nutritional factors, feed deterioration, feed ingredients, unreasonable feed processing, etc.
◇ Feed with bad palatability may decrease the appetite of piglets
Tannic acid, protease inhibitor and plant agglutinin are typical anti-nutritional factors. The factors can affect the taste of feed and decrease the appetite of suckling pigs. Also, they may combine with digestive enzymes and nutrients in the body of suckling pigs, secrete irritant substances, and affect the digestion of protein.
Suggestion: realizing the balance transition between creep feed and high-grade piglet feed through formula optimizing and reasonable processing. Eliminating the excessive anti-nutritional factors according to the local conditions and actual situation.
3 How to eliminate anti-nutritional factors
The main methods of eliminating anti-nutritional factors and reducing urease in soybean meal include physical method, chemical method and biological method. At present, ZHENG CHANG piglet feed expanding technology has become a leading solution in the industry.
4 How does expanding technology eliminate the anti-nutritional factors?
It allows materials to be fully conditioned, under high temperature and humidity, through the special spiral strong extrusion and shearing action, to form short-term and medium-temperature (90-130℃) conditions, to fully expand the materials, kill harmful microorganisms and destroy or passivate the...
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