Free amino acids in animal feed: lysine, arginine and intestinal flora

Free amino acids in animal feed: lysine, arginine and intestinal flora

Free amino acids are frequently used in modern animal feed today. Particularly in industrial animal feed, individual amino acids such as Lysine, methionine, threonine or tryptophan in order to specifically control the amino acid profile.

From the point of view of the animal feed industry, this may seem sensible because feed can be calculated more precisely and formulated more economically. From the point of view of conscious nutrition, however, it is worth taking a closer look: Free amino acids differ from amino acids that are bound in natural complete proteins.

This topic is therefore increasingly being discussed in connection with Amino acid antagonism, Lysine, Arginine, Tryptophan, industrialised animal feed, meat quality, Intestinal flora, Digestion, fibre and healthy nutrition discussed.

What are free amino acids?

Amino acids are the building blocks of proteins. In natural foods, they are usually found bound in complete proteins. During digestion, these proteins are gradually broken down into peptides and individual amino acids.

Free amino acids on the other hand, are already isolated. They do not have to be separated from a complete protein.

This does not automatically mean that free amino acids are problematic. The decisive factors are quantity, combination, product quality, processing, individual tolerance and the overall nutritional environment.

How are amino acids produced industrially?

Today, many free amino acids are produced using industrial fermentation processes. Microorganisms that produce certain amino acids can be used in this process.

Such processes play a major role in the food and animal feed industry. They make it possible to produce large quantities of individual amino acids such as lysine, threonine or methionine and use them specifically in animal feed.

In discussions about modern animal feed, therefore, not only the amino acid itself is considered, but also the production, purification, by-products, raw material quality and the entire feed formulation.

It is important to categorise them objectively: industrial production does not automatically mean that a substance is problematic. At the same time, an isolated amino acid in feed differs significantly from amino acids in natural food compounds.

Why are free amino acids used in animal feed?

In industrial animal feed, free amino acids are used to supplement the amino acid profile of a feed in a targeted manner. Particularly in feed based on maize, wheat or soya, individual amino acids can be limiting in relation to other nutrients.

By adding lysine, methionine, threonine or tryptophan, the feed can be calculated more precisely. This can improve feed conversion and optimise the protein content mathematically.

From a consumer perspective, this topic is interesting because it shows how strongly modern food chains are linked to industrial animal feed, global raw materials, GMO soya, glyphosate, protein optimisation and additives.

You can find out more in the article about Industrial animal feed, free amino acids and intestinal flora.

Amino acid antagonism: Why the ratio is important

At the Amino acid antagonism The point is that certain amino acids can affect similar transport or metabolic pathways. If a single amino acid is isolated and consumed in higher quantities, the relationship to other amino acids can become more prominent.

A frequently discussed example is the relationship between Lysine and Arginine. Both belong to the basic amino acids and are often considered together in nutritional physiology.

This does not mean that lysine is fundamentally bad. Lysine is an essential amino acid and a component of many natural proteins. The topic becomes particularly interesting with isolated, free intake and with highly standardised feed or food supplements.

You can find out more about this connection in the article on Amino acid antagonism, lysine and arginine.

Lysine and arginine in animal feed

Lysine is used particularly frequently in animal feed. The reason for this is that feed based on cereals or soya does not always contain an amino acid profile that optimally matches the desired feeding strategy.

Arginine, on the other hand, is considered in the body in connection with nitric oxide, or NO for short. NO is a signalling molecule and plays a role in various physiological processes.

Researchers and animal nutritionists are therefore discussing how the ratio of lysine, arginine and other amino acids should be assessed. Such relationships are complex and should not be presented as a simple cause-and-effect chain.

Threonine, tryptophan and kynurenine pathway

In addition to lysine and arginine, other amino acids are also considered in the context of modern feeding. These include Threonine and Tryptophan.

Tryptophan is an essential amino acid. It can be further processed in the body via the so-called kynurenine pathway, among others. This metabolic pathway is associated with niacin, nicotinamide and NAD+.

Threonine is also used as a free amino acid in animal feed. In discussions about amino acid ratios, it is considered whether individual amino acids can compete with each other or influence certain metabolic pathways.

It is important for a consumer-orientated classification that these biochemical correlations show that nutrition is more than just protein quantity. The entire pattern of protein quality, fibre, micronutrients, intestinal flora and processing is decisive.

GMO soya, glyphosate and modern animal feed

Modern animal feed is often linked to global raw material chains. Soya, maize and cereals in particular play a major role in animal feed.

Glyphosate is often mentioned in this context because it is discussed in relation to certain cultivation systems and GMO plants.

The assessment of glyphosate is scientifically and regulatory complex. Residues do not automatically mean an acute risk. At the same time, it is understandable that many people want to pay attention to origin, feeding, organic quality and food chains that are as transparent as possible.

Animal feed and meat quality

Meat quality depends on many factors: Animal husbandry, feeding, animal health, slaughter, refrigeration, storage, processing and preparation.

The question is therefore not just whether meat is „white” or „red”. The overall quality is more important: origin, feeding, processing, freshness and additives.

Fresh meat from a transparent source should be evaluated differently to heavily processed meat products with long lists of ingredients, nitrite curing salt, flavour enhancers, preservatives or long storage periods.

You can find out more in the article about Industrialised animal feed and meat quality.

Parasites, immune system and animal health: cautious categorisation

In animal husbandry, parasites, bacterial contamination, viral diseases and opportunistic pathogens are often considered in the context of animal health, feeding, housing conditions, the immune system and management.

Amino acids, micronutrients and intestinal flora can also play a role in this context. Nevertheless, it would be too simple to attribute individual illnesses solely to an amino acid or a single feed component.

Animal health is always multifactorial. These include genetics, husbandry, hygiene, feeding, stress, vaccination programmes, veterinary care and the quality of the entire production chain.

Bird flu, viruses and nutrition: no simple explanations

Avian influenza and other viral infections are complex veterinary issues. They are linked to pathogens, animal husbandry, biosecurity, wild birds, flock management, immune status and many other factors.

Healthy feeding can be part of good animal management. However, it is no substitute for biosecurity, veterinary monitoring and professional disease control.

The same applies to human infections: nutrition can be a building block for general well-being and normal bodily functions, but it is no substitute for medical prevention or treatment.

Free amino acids, intestinal flora and biogenic amines

Free amino acids are also used in connection with Intestinal flora and biogenic amines considered. Biogenic amines can be formed when amino acids are converted by microbial processes.

Well-known examples are

• Histamine from histidine
• Cadaverine from lysine
• Putrescine from ornithine or arginine
• Tyramine from tyrosine

These substances are not automatically problematic. However, the quantity, storage, processing, intestinal flora, freshness and individual tolerance can play a role for sensitive people.

You can find out more in the article about Biogenic amines, intestinal flora and digestion.

Why highly processed foods are viewed critically

The issue of free amino acids highlights a larger problem: many modern foods and animal feeds are highly optimised, standardised and technologically processed.

Many factors can come together in food: isolated proteins, free amino acids, additives, sweeteners, flavourings, preservatives, refined carbohydrates and little fibre.

For a healthy nutrition Therefore, it is not just a single nutrient that is decisive, but the entire Nutritional quality.

What does this mean for intestinal flora and digestion?

For the Digestion it is not only the amount of protein that is decisive. It is also important how processed a food is, what fibre it contains, how fresh it is and how well it is tolerated by the individual.

A diet with many highly processed products, little fibre and long lists of ingredients creates a different environment than a diet with natural foods, vegetables, pulses, fruit, nuts, seeds and high-quality protein sources.

The Intestinal flora is often considered in connection with dietary fibre, fermentation, digestion, biogenic amines and individual tolerance.

Fibre, prebiotics and a healthy diet

An important counterbalance to highly processed foods are Dietary fibre. They fit in with a fibre-conscious diet and are often considered in connection with intestinal flora, fermentation and digestion.

Especially Prebiotic dietary fibres like Inulin and pectin are interesting for people who want to organise their diet more consciously.

Also Pure apple fibre can be useful for people who want to take a more natural approach to their daily fibre intake.

Anyone concerned with free amino acids, animal feed, meat quality and healthy nutrition should therefore not only pay attention to protein, but also to fibre, intestinal flora, digestion, freshness and food quality.

Fulvicherb Synergy in combination with arginine and dietary fibre

Fulvicherb Synergy combines fulvic acid, arginine, inulin, pectin, niacinamide, natural unrefined rock salt, sunflower lecithin and selected herbs in a liquid formula.

The recipe is suitable for people who are concerned with intestinal flora, digestion, dietary fibre, arginine, free amino acids and healthy nutrition and who want to consciously supplement their diet.

However, the focus should always be on the overall diet. Fulvicherb Synergy does not replace a balanced lifestyle, but can be used as a complementary liquid formula in a conscious nutritional concept.

How can you organise your diet more consciously?

You don't need to know every detail of feed production to make good decisions. Simple principles often help to ensure a conscious and healthy diet:

• As little highly processed food as possible
• More natural foods and fresh ingredients
• Sufficient fibre from various sources
• Conscious selection of protein sources
• Fewer products with long lists of ingredients
• Favour meat and animal products from transparent origins
• Choose organic or pasture products, if possible
• Pay attention to individual compatibility
• Sufficient fluids with a high-fibre diet

Frequently asked questions about free amino acids in animal feed

What are free amino acids?

Free amino acids are single, unbound amino acids. They differ from amino acids that occur in natural foods as a component of complete proteins.

Why are free amino acids used in animal feed?

They are used to supplement the amino acid profile of animal feed in a targeted manner. This allows feed to be formulated more precisely and economically.

What is amino acid antagonism?

Amino acid antagonism describes the fact that certain amino acids can affect similar transport or metabolic pathways. The relationship between lysine and arginine is discussed particularly frequently.

Are free amino acids fundamentally problematic?

Not automatically. The decisive factors are quantity, combination, product quality, processing, individual tolerance and the overall diet.

What do free amino acids have to do with intestinal flora?

Free amino acids are discussed in connection with intestinal flora and biogenic amines, because amino acids can be converted by microbial processes.

What role does glyphosate play?

Glyphosate is often discussed in connection with GMO soya, modern agriculture, animal feed, residues and the microbiome. The assessment is complex and should be differentiated.

What role does fibre play?

Dietary fibres are an important part of a healthy diet. Prebiotic fibres in particular, such as inulin and pectin, are often considered in connection with intestinal flora, fermentation and digestion.

How does Fulvicherb Synergy fit into this context?

Fulvicherb Synergy combines fulvic acid, arginine, inulin, pectin, niacinamide and herbs in a liquid formula. The formula is suitable for people who are concerned with intestinal flora, digestion, dietary fibre and conscious nutrition.

Conclusion: consciously categorising free amino acids

Free amino acids in animal feed are an important topic in modern food production. They show how strongly animal feed, amino acid profiles, GMO soya, glyphosate, meat quality, intestinal flora and processing are discussed together.

For human nutrition, one cautious but sensible conclusion is particularly important: it is not individual substances alone that determine nutritional quality, but the interplay of natural foods, protein quality, fibre, micronutrients, intestinal flora and processing.

If you want to be more conscious about your diet, you should pay attention to fresh food, transparent origins, sufficient fibre, good digestibility and as few highly processed products as possible. Fulvicherb Synergy as a liquid formula with fulvic acid, arginine, inulin, pectin, niacinamide and herbs can fit naturally into a conscious nutritional concept.