What is betaine?
Betaine is the trimethyl derivative of the amino acid glycine. It occurs naturally in plants and animals; sugar beet is a particularly rich source, and natural betaine is recovered from sugar beet molasses and vinasse. Synthetic betaine is also produced industrially.
In the body betaine is formed from choline and has two main functions: it donates methyl groups in the liver, and it acts as an organic osmolyte that helps cells keep their water balance and volume under stress.
What does it do in animal feed?
- Methyl donor: betaine can donate a methyl group to remethylate homocysteine to methionine, which can spare part of the methionine and choline otherwise used for methylation. It does not replace methionine as a building block of protein.
- Osmoprotection: by helping cells keep water, betaine supports intestinal cells and other tissues under heat stress, dehydration or coccidiosis challenge in poultry.
- Carcass composition: in pigs and broilers betaine is associated with leaner carcasses, with less fat and more breast meat in some conditions.
- Energy saving: as an osmolyte it can reduce the energy cells spend on ion pumping, which may help maintain performance under stress.
- Aquaculture: it has also been used as an attractant in some fish and shrimp feeds.
Anhydrous betaine and betaine HCl
- Anhydrous betaine: high-purity betaine, highly soluble in water; it is hygroscopic and needs dry storage.
- Betaine HCl: the hydrochloride salt; because of the chloride part it contains about 76% betaine. It is acidic and can be corrosive in contact with metal and moisture, which matters for handling and storage.
- Natural betaine: obtained from sugar beet processing, often available in liquid or concentrated forms.
- When comparing products, formulation should be based on the actual betaine content of each form.
How is the inclusion assessed?
Betaine inclusion is usually decided by the nutritionist according to the goal: partial replacement of supplemental choline or methionine for methylation, support under heat stress, or carcass quality targets. The level of methionine, choline and folate in the diet, the species and production stage, and the climate are all considered. When betaine is used to replace part of the choline chloride, the balance is assessed on a methyl-group basis, not weight for weight.
Local regulations and the product label should always be followed for authorised species and use conditions.
Quality criteria
- Guaranteed betaine content and form (anhydrous, HCl or natural).
- Moisture and caking behaviour; dry, sealed storage for hygroscopic products.
- Heavy metals and impurities within the applicable limits.
- For betaine HCl: suitable packaging and handling because of its acidity.
- Certificate of analysis (CoA) and lot traceability.
CTF Premix and betaine
Betaine is not part of CTF Premix's standard product range, but it can be evaluated for inclusion in custom premixes on request. Our technical team reviews compatibility with the other premix components, the target species and the required inclusion rate. Custom premixes are produced at our Ankara facility under ISO 9001:2015 and GMP with lot traceability.
This page is for general information. Inclusion rates and product choice should be decided with a nutritionist, taking into account the species, the feed formulation and the applicable regulations.