Effects of high active dry yeast for feeding on rumen micro-ecosystem

Nov. 03, 2022

High-activity dry yeast for feed is the use of modern biotechnology and advanced equipment to dry the yeast cells produced on an industrial scale into a product with more than 95% dry matter and less than 5% moisture, and vacuum packaging. When it sees water, it instantly becomes a physiologically active cell, so it is also called instant active dry yeast. High-activity dry yeast for feed is a dormant state of plasmolysis made by low-temperature drying through a special process. It can be quickly resurrected when it encounters water and O2 in the outside world; its resurrection time is very short.

High active dry yeast for feed has the advantages of low water content, quick rejuvenation, long storage time and convenient use. Numerous studies have shown that feeding highly active dry yeast has a positive effect on the activity of ruminant microorganisms in ruminants, as well as the ability to stabilize rumen pH, prevent rumen acidosis, stimulate the growth of fibrous degrading bacteria and enhance their activity.

1. Stabilizing the rumen microbiota of ruminants

In weaning, grazing, providing high-concentration diets, or under stress conditions such as high temperature and perinatal period, the composition of rumen microorganisms will be affected, which will further affect the feed utilization rate of ruminants, and ultimately affect the production performance of ruminants Therefore, the stability of the rumen micro-ecosystem is crucial to the improvement of rumen function. Active dry yeast can consume oxygen, which is conducive to maintaining an anaerobic environment in the rumen, which is conducive to the reproduction of rumen anaerobic bacteria; at the same time, studies have shown that yeast cells can also stimulate the growth of beneficial microorganisms in the rumen

2. Stabilize rumen pH to prevent acidosis

The rumen environment is neutral and acidic, and its suitable pH value is in the range of 5.8 to 6.5. When the pH value of the rumen drops below 5.8, acidosis will occur, which will lead to decreased food intake of ruminants, decreased nutrient absorption rate, decreased production performance, lameness, decreased fertility, and decreased service life. The growth of active yeast cells in the rumen consumes oxygen and sugar in the rumen. The consumption of sugar limits the food available to lactic acid-producing bacteria and reduces the lactic acid produced by the consumption of sugar by lactic acid-producing bacteria, so it is beneficial to stabilize the Ph in the rumen value. Studies have shown that when yeast is added to the diet, the beneficial microflora is increased by a factor of 10-15, and the consumption of sugar limits the supply of lactic acid-producing bacteria food, so the rumen Ph value is stabilized.

3. Improve rumen fiber degradation ability

Active yeast cells are under stress in the rumen and do not reproduce, but metabolically active yeast cells produce small molecules of proteins and peptides. These small-molecule proteins and peptides stimulate the activity of fiber-digesting bacteria and lactic acid-utilizing bacteria, increase the consumption of acid by stimulating the growth of lactic acid-utilizing bacteria, and prevent the decline of rumen Ph value. Under more stable rumen pH conditions, fiber-digesting bacteria do not enter a temporary dormant state, so that fiber digestion can continue and be more stable.

Under modern feeding methods, the ruminant microbes of ruminants have undergone tremendous changes, and providing exogenous active dry yeast can stabilize the rumen microflora balance and improve the performance and health of ruminants. High-activity dry yeast for feeding is purified and cultivated by experts from the Institute of Microbiology, Chinese Academy of Sciences for more than ten years, and after repeated adaptation of the animal, the selected natural yeast strain is approved by the US FDA and the Chinese Ministry of Agriculture for direct feeding. Safe yeast strains for feeding animals. Its product (gastric power) has more than 20 billion viable bacteria per gram, and has the advantages of strong adaptability, high purity and strong activity.

As a green and natural feed additive, high-activity yeast for feed can improve the production performance of ruminants by regulating the rumen microecological balance, and has broad application prospects.

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