High tech research and application and development trend of modern feed industry

Introduction: 1 The dry matter yield and nutritive value per unit area of artificial grassland are 6-8 times higher than that of natural grassland, and the livestock carrying capacity can be increased several times or even dozens of times In the developed countries of animal husbandry, the area of artificial grassland including improved grassland accounts for more than 10% of the total grassland area New Zealand's meat yield of 100 million mu grassland is equal to the gross yield of 6 billion mu grassland in China In addition, the growth capacity of natural pasture can be increased by more than 5% by rational utilization and scientific management 2 Air fodder The leaves of twigs and sawdust after processing are rich in nutrients, which can be processed into high-quality livestock and poultry fodder According to the determination, the protein content in the leaves of Amorpha fruticosa is 23.7%; the protein content in the leaves of Robinia pseudoacacia and Lespedeza is more than 20%; the nutrition of pine needle leaves, willow leaves, poplar leaves and other leaves is very rich All kinds of leaves can be steamed with fresh leaves and crushed with dry leaves and fed to livestock and poultry with good results At present, China alone has a forest area of 1.91 billion mu, with an annual output of hundreds of millions of tons of branches and tender pieces If it can be reasonably developed and utilized, it has great potential 3 At present, all countries in the world are researching and opening up new plant feed resources For example, the United States studies the potential value of grain amaranth as feed Japan is cultivating rice, wheat with high content of protein and lysine; Canada is cultivating new varieties of low toxic oil algae with crude protein content of 30% - 50% and metabolic energy of 10 - 23.14kj/g, which are very suitable for feed 4 Development and utilization of single cell protein feed The bacterial protein obtained by culturing microorganisms in fermentation medium is single cell protein feed Bacteria contain 50% - 80% protein, yeast 40% - 60%, algae 40% - 50% protein and mould 20% - 30% Single cell protein feed contains amino acids necessary for animals, especially lysine, methionine and tryptophan, which are deficient in plant feed At the same time, it contains enzymes of various vitamins and hormones, which can promote animal growth and development, improve production performance, product quality and quantity It is an ideal new protein feed, with digestibility of 85% - 95% China has a vast territory and rich forage resources, which can provide nearly 600 million tons of crop straw and hundreds of millions of tons of branches and leaves every year These are the material resources for the production of single cell protein feed (author:) share to feed Weibo share to: