Application of Beer Yeast in Animal Feed

      Beer yeast (beer waste yeast) is a byproduct of the beer industry, which can be used as a high-quality animal feed additive after drying, inactivation, and other treatments. Its application in animal nutrition is mainly reflected in the following aspects:

1. Nutritional fortifiers

      High protein source: Beer yeast contains 40% -60% crude protein and is rich in essential amino acids such as lysine and methionine, which can supplement animal protein needs.

      Vitamins and minerals: rich in B vitamins (B1, B2, niacin, etc.), organic selenium, zinc, iron, etc., promoting metabolism and growth.

      Nucleotides: support intestinal development and immune function in young animals such as piglets and chicks.

2. Functional additives

      Probiotic effects: Yeast cell walls contain β - glucan and mannooligosaccharides (MOS), which can:

      Stimulate the animal immune system and enhance disease resistance;

      Absorb pathogenic bacteria (such as Escherichia coli and Salmonella) to improve intestinal health;

      Promote the proliferation of beneficial bacteria (lactic acid bacteria, bifidobacteria) and regulate microbial ecological balance.

      Improvement in palatability: The natural yeast aroma can increase feed intake, especially for pets and young livestock.

3. Application scenarios

      Pig feed: reduces piglet diarrhea and increases daily weight gain.

      Poultry feed: Improve the egg production rate of laying hens and enhance the stress resistance of broiler chickens.

      Ruminant animals: regulate rumen fermentation and improve fiber digestibility.

      Aquatic feed: Enhance the immune system of fish and shrimp, and reduce feed efficiency.

      Pet food: as a natural attractant and nutritional supplement.

4. Precautions for use

      Dosage control: It is recommended to add 1% -5% (adjusted according to the animal species), as excessive amounts may cause bloating or indigestion.

      Storage conditions: Store in a dry and dark place to prevent mold growth.

      Differences in palatability: Some animals may need to adapt to yeast flavors in the early stages.

Summary of Advantages

      Beer yeast has both nutritional and functional characteristics, which can replace some fish meal or synthetic additives, reduce feed costs, and improve animal health and production performance, in line with the trend of green farming.