Currently, in animal feed, a variety of microecological preparations are added to help regulate the balance of gut flora, and these products have shown some positive effects. However, whether or not to add them in large quantities depends on cost-effectiveness. Personally, I believe that not all microecological products are equally effective in inhibiting harmful bacteria. Additionally, their stability—especially under high-temperature conditions during pelletizing—varies greatly. Some produce acids, others produce enzymes, while some simply provide nutrients that indirectly promote the growth of beneficial bacteria. The differences in their functions and characteristics mean that understanding each type is crucial for making the right choice when selecting these products.
Here are some common types of microecological preparations and their features:
1. Lactobacillus preparations secrete lactic acid and short-chain fatty acids, which aid in digestion. They can be used both as a feed additive and for treating certain digestive issues, but they tend to have poor stability and may not survive well in harsh conditions.
2. Bacillus subtilis preparations are known for producing amylase and protease in the digestive tract, as well as synthesizing B vitamins. These are mainly used in feed additives and have better stability compared to some other probiotics.
3. Bifidobacteria preparations also produce lactic acid and certain vitamins. They are highly effective in improving digestion and can help suppress pathogenic bacteria, thereby boosting the animal's immunity. However, they have low stability and grow slowly in the gut, making them less suitable for long-term use.
4. Spore-forming bacteria, such as certain strains of Bacillus, are aerobic and do not multiply in anaerobic environments. They help stimulate the growth of beneficial bacteria and inhibit harmful ones, with high stability and good survival rates in feed processing.
5. Yeast-based preparations provide protein and help improve digestion by stimulating the growth of beneficial bacteria. However, they lack the ability to inhibit pathogenic bacteria or produce lactic acid, and they generally have lower stability and slower reproduction rates.
When it comes to maintaining gut health, it's often more beneficial for animals to support the natural balance of their intestinal microbiota rather than relying solely on external probiotic additions. While probiotics can be useful, they are essentially foreign bacteria that may not always integrate well into the existing gut ecosystem. Therefore, using nutrients like organic acids, conjugated linoleic acid, and plant extract essential oils can be a more scientific approach. These substances nourish and stimulate the growth of beneficial bacteria while suppressing harmful ones, offering practical benefits in real-world feed production.
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