Sulphurated amino acids and their roles:
- Muscular anabolism
- Formation of skin, hoof, coat
- Indispensable for optimal growth
- Needed for physical exercise
Sulphurated amino acids and their sources:
- Whey proteins
Amongst the sulphurated amino acids, it is necessary to consider cystine and methionine.
It seems that methionine is a limiting amino acid in diets for sport horses. It plays a particular role in protein biosynthesis. It is important to remember that vitamin B12 acts as coenzyme in the synthesis of methionine.
The estimated needs for methionine are 0,18 g per kg of metabolic weight and per day.
The metabolic weight corresponds to the horse's weight to the power of 0.75: for example a horse of 450 kg: 450 0.75 = 98 kg of metabolic weight; such a horse will need 17.6 g of this amino acid per day.