Abstract: feed yeast is rich in protein, with the animal necessary eight amino acids and a variety of - family vitamins, vitamin D2, fat, crude cellulose, carbohydrate, mineral elements and trace elements.At the same time, it also contains rich enzyme systems and physiological active substances, such as coenzyme 1, coenzyme 2, coenzyme 3, cytochrome 4, lecithin, thrombin, glutathione and RNA.It can be widely used in pig and poultry, ruminant, aquatic products and other aspects, the prospects are broad.
Yeast is a single-celled microorganism belonging to fungi.As early as thousands of years ago with human daily life has been closely linked.In ancient China, the laboring people would use yeast to make wine. In the book the requirements of qi people, 12 different kinds of wine songs and more than 20 kinds of wine making methods were recorded.Until today, yeast is still indispensable in our daily life, such as alcohol, yellow wine, white wine, wine, beer, sweet wine qu, bread yeast, medicinal yeast, edible yeast, saccharomyces cerevisiae and feed yeast and other products are produced by yeast fermentation.
Nutritional value of yeast
Feed yeast is rich in protein, with the animal body necessary eight amino acids and B vitamins (B1, B2, B3, B4, B5, B6, B7, B8 and B11), vitamin D2 original, fat, crude cellulose, carbohydrate, mineral elements and trace elements.Also contains rich enzyme system (e.g., sucrase and maltase, glycogen enzyme, enzyme lactase, trea, protease, lipase, phosphatase, hexose phosphorylase, decarboxylase, dehydrogenase, enolization enzyme and REDOX enzyme, etc.) and physiological active substances, such as coenzyme Ⅰ, coenzyme A, coenzyme Q, cytochrome C, lecithin, blood coagulation, glutathione and RNA ribozymes, etc
Application of feed yeast in animal feed
Feed yeast is widely used as a supplement to feed protein, because in the feed with the capacity of feed yeast containing essential amino acids, B vitamins, vitamin D2 original, mineral elements and trace elements and other components absorbed by livestock and poultry.Thus promotes the livestock and poultry's growth and development, causes the livestock and poultry meat egg increase, the flesh quality improvement, the milk quantity increase, the fur luster, can shorten the feeding period, saves the concentrate feed.Reasonable use of feed yeast in mixed feed can save grain feed and reduce feeding cost.
Bailin Feed yeast is used for feeding horses, cattle, but also can improve the endurance of horses, cattle, prevent young animals rickets and reduce spasm disease and other major economic benefits.Yeast is also used to feed mink, fish, shellfish, river shrimp, lobster, silkworms and honey peak.According to foreign reports, yeast powder can be used to prepare pollen substitutes in early spring or in the season when pollen is scarce. Feeding bees can increase honey production by 27-40%.Another important significance of using yeast in livestock and poultry production is that it can prevent and cure gastrointestinal diseases and improve health.The health care function of yeast may be due to :(1) yeast cells (including dead yeast cells) can combine with toxins in the gastrointestinal tract and some pathogenic bacteria;(2) yeast cells can promote the immune function of animals and enhance the resistance to pathogens.Yeast protein high absorption rate, and contains biological active substances (vitamins, enzymes, hormones), can promote the metabolism of animals, make the protein and carbohydrate in the common feed easy to be absorbed, can improve the plant feed absorption rate of 10-15%.Feed yeast to feed livestock with a certain amount of feed, can reduce the mortality of young livestock, livestock and poultry, promote the breeding ability and growth rate of livestock.Feed yeast finished products are mostly supplied to feed mills according to the scientific feed formula to make pellet feed, it can also be directly added to feed feed.
The utilization of industrial wastes and agricultural by-products as raw materials for the production of feed yeast not only reduces the waste of resources, but also improves its nutritional value.And its effect on livestock and poultry is obvious, so that it has been widely used in animal husbandry.