Biogenic Amines (BGA) + Ammonia

Where it helps?

• Highlights microbial stress, dysbiosis, and amine-related biological activity rather than protein fermentation intensity alone.
• Captures amino acid decarboxylation products such as histamine, tyramine, cadaverine, putrescine, and tryptamine, together with ammonia from deamination.
• Supports interpretation of gut instability, microbial imbalance, nitrogen inefficiency, and amine-associated gut irritation.
• Complements BCFA and Protein Fermentation Products by showing microbial stress response and nitrogen waste formation.
• For feed additive companies, BGA + Ammonia profiling provides a mechanism-linked endpoint for products targeting microbial stability, amino acid utilization, and gut environment quality.

How does it work?

We typically analyze feces or digesta (e.g., ileum/cecum/colon), depending on the biological question and study objectives.

• Feces: suitable for routine monitoring and field-based studies.
• Digesta: enables detailed analysis of compartment-specific fermentation processes.

What do we measure?

Biogenic amines are formed mainly through microbial decarboxylation of amino acids, while ammonia reflects amino acid deamination and nitrogen waste. Together, they provide a profile of microbial stress metabolism and amino acid imbalance:

• Ammonia – a key end-product of amino acid deamination; elevated levels indicate inefficient protein utilization.
• Histamine – associated with inflammatory responses and gut barrier challenge.
• Cadaverine – derived from lysine; marker of microbial protein degradation.
• Putrescine – produced from ornithine; linked to cell turnover and microbial activity.
• Tyramine – derived from tyrosine; associated with microbial imbalance.
• Spermidine – involved in cellular metabolism; interpretation depends on context and balance.
• Spermine – linked to cellular processes and gut mucosal function.
• Tryptamine – derived from tryptophan; influences gut signaling and microbial-host interactions.
• 2-Phenylethylamine – derived from phenylalanine; associated with microbial fermentation activity.

Intepretation context

• Elevated BGA levels indicate increased microbial decarboxylation activity, often linked to dysbiosis, microbial stress, and amine-related biological effects.
• Ammonia adds a nitrogen-waste perspective and helps separate amino acid deamination from amine formation.
• BGA + Ammonia is most useful when the focus is gut stress, microbial instability, or nitrogen inefficiency, rather than protein fermentation intensity alone.

Typical use cases

• Protein and amino acid optimization: assess impact of improved formulation on fermentation quality.
• Gut stress monitoring: detect early signs of imbalance or inflammatory pressure.
• Additive validation: demonstrate reduction of stress-related metabolites.
• Weaning and transitions: track microbial adaptation and gut stability.
• Health challenges: evaluate links between dysbiosis and metabolite production.

Sample types

• Feces (routine monitoring, on-farm sampling)
• Digesta (ileum/cecum/colon) from controlled trials