Manuscript Topics

Microorganisms play a vital role in animal nutrition and metabolism, often in ways that might surprise us. In the intricate ecosystem of an animal's gut, countless microorganisms coexist, forming what is known as the microbiota or microbiome. These microorganisms encompass bacteria, archaea, fungi, and even viruses, each contributing uniquely to the host's well-being. One of their most crucial functions is aiding in digestion and metabolism, breaking down complex nutrients that the host animal cannot digest alone.

One of the primary contributions of microorganisms to animal nutrition is the fermentation of dietary fibers and complex carbohydrates. Herbivores, such as cows and sheep, rely on these microorganisms to break down cellulose and other plant materials into simpler compounds like volatile fatty acids (VFAs). These VFAs serve as an essential energy source for the host animal. Without the microbial community in their guts, herbivores would struggle to derive adequate nutrition from their plant-based diets.

Additionally, microorganisms in the gut help synthesize certain vitamins and amino acids that are essential for the health of the animal. For example, some bacteria produce vitamin K and various B vitamins, which are crucial for processes like blood clotting and energy metabolism. Similarly, microbial fermentation in the gut can generate amino acids like lysine and methionine, which are building blocks for proteins. In this way, gut microbes supplement the host animal's diet by providing nutrients that may be lacking or insufficient in their diet.

Moreover, microorganisms contribute to the overall health and immune function of the host animal. They help maintain the balance of the gut environment, preventing the proliferation of harmful bacteria and pathogens. Certain species of gut bacteria also stimulate the immune system, enhancing the host's ability to fight off infections and diseases. Research has shown that disruptions to gut microbiota, such as those caused by antibiotics or dietary changes, can have profound effects on animal health, leading to issues like digestive disorders, metabolic imbalances, and susceptibility to infections.

The special issue welcomes original studies or reviews focusing on the role of microorganisms in animal nutrition and metabolism.

Keywords:
• Bacterial-based feed additives,
• Ensiling,
• Feed additives,
• Feed processing,
• Fermentation (in vitro and in vivo experiment),
• Functional feed,
• Fungal-based feed additives,
• Microbial feed additives,
• Microorganism,
• Solid-state fermentation.

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