BENEFITS BEYOND METHIONINE
H MTBA’S positive impact on broilers
The active compound HMTBA (2-Hydroxy-4(methylthio)butanoic Acid) is naturally found in plants, microbes such as yeast, lactobacillus, mammals and poultry. This indicates that animals are well equipped to fully utilise HMTBA as a source of methionine.
Because of its unique chemical structure, HMTBA is metabolised differently by animals, resulting in many extra benefits beyond methionine. Five decades of extensive practical experience in commercial feed production have confirmed the value of HMTBA as a methionine source in broilers, layers and other livestock. HMTBA provides many practical benefits beyond just methionine for application in home mixed feeds, complete feeds, premixes and concentrates.
A clear difference in broiler performance
HMTBA, is absorbed via passive non-saturable diffusion without the need of energy or an active transport mechanism. Site absorption represents another distinction of HMTBA and is absorbed along the entire length of the gastro-intestinal tract. These differences translate into improved performance and profitability during periods of stress, particularly heat stress. Birds consuming HMTBA have shown improved FI as well as BWG and under acute heat stress conditions, the choice of HMTBA as the supplemental methionine has made a clear difference in broiler
HMTBA has organic acid properties. In the acidic gut environment HMTBA is completely dissociated and, at low ph, this organic acid has antibacterial effects against gram-negative bacteria including E.coli and Salmonella. It is synergistic with other organic acids, such as formic or lactic acid.
HMTBA Calcium Salt contains sources of organic calcium. HMTBA Calcium Salt provides 12% of calcium in an organic form which means better bioavailability compared to inorganic calcium sources and less antagonism with other trace minerals. HMTBA is an effective source of calcium for skeletal formation.
HMTBA is also environmentally friendly. To reduce the environmental impact of animal production on the environment, nutritionists are replacing some of the dietary crude protein in feeds with amino acids to reduce the amount of nitrogen excreted by animals. More environmentally friendly, HMTBA does not contain nitrogen and so does not add to the nitrogen load on the environment.
HMTBA performance in broilers
In broilers, the relative effectiveness or bio efficacy of HMTBA has been evaluated in several trials using a wide range of diets, strains of birds, production phases, cycles, age of birds and production conditions. These support that HMTBA Calcium Salt contains 84% and HMTBA 88% methionine activity.
The importance of HMTBA for broilers
Methionine performs several important metabolic functions such as protein synthesis. Chicken meat protein is a rich source of dietary methionine and meat yield is an important driver of per-bird profitability. If dietary methionine is supplemented below the recommended levels, meat yield will be significantly depressed and optimal performance may not be achieved.
Proper methionine nutrition is critical for improving meat yield per bird. Protein is the major component of the feathers (89% – 97%) and synthesis of the major feather protein - Keratin - requires sulphur containing amino acids, cystine and methionine. Cystine is the major component of Keratin, while methionine is involved through its conversion to cystine. Methionine contains a methyl utilised in the body in a few reactions, such as maintenance of DNA and formation of choline (a B complex vitamin essential in the metabolism of fat and cell membrane formation).
In laying hens, methionine performs many important metabolic functions including protein synthesis. Egg white protein is one of the richest sources of dietary methionine (approximately three times more than in soy protein). Several studies have reported reductions in egg weight and production when dietary methionine is below the recommended concentration for optimal performance in both first- and second-cycle laying hens.¡