Rumen by-pass methionine optimizes the dairy cow‘s amino acid balance, relieves liver metabolism and reduces feed costs
High yielding cows, especially in early lactation, have a supply gab of usable amino acids in the small intestine. The most important source of protein for dairy cows is the microbial protein. At high yield however only 60 to 80 % of protein needed can be covered by microbial protein. The missing amount must be covered by undegradable protein. Rumen stable protein (UDP) from roughage feed and commercial feed supplement does not correspond to the recommended amino acid composition for milk protein.
Methionine - the first limiting amino acid for dairy cows
The composition of milk protein and thus the part of the individual amino acids are genetically determined. Even if only one amino acid is missing, this has a limiting effect on milk protein synthesis. Methionine is already known as first limiting amino acid for dairy cows. Methionine is an essential amino acid that the animals can not produce by themselves, but must be taken up with the feed. Methionine is often the limiting factor in lactation because methionine has other important tasks in the metabolism, too.
Competition between milk production and metabolism
Besides functioning as a basic building block for the production of milk protein, methionine is also required as
a methyl donor in liver lipid metabolism. In the high lactation period there is often a competition situation of methionine between the liver metabolism (health) and milk protein synthesis (performance). If one tries to increase the UDP-volume and the methionine quota with various protected feed components (rapeseed, soya), it means also an increase of other amino acids. Surplus amino acids must be eliminated extensive by the metabolism. This results in an undesirably high level of urea in the milk. The disposal of excess nitrogen as urea burdened liver and kidney and wastes energy, missing elsewhere in the metabolism of the dairy cow.
Our solution: BEWI-FATRIX Methionine
This special feed additive is able to close the gap of the first limiting amino acid methionine!
The micro-encapsulation of BEWI-FATRIX Methionine in a matrix structure of rumen stable fat ensures that methionine in high doses gets to where it is needed – in the small intestine. The cow‘s metabolism is relieved because no surplus amino acids have to be degraded. The rumen protected form is necessary because unprotected methionine almost is broken down nearly completely in the rumen. Adding BEWI-FATRIX Methionine to a dairy cow‘s ration allows the crude protein content in the diet to be reduced without any loss in performance. This cuts down on the overall cost of feed while increasing the profitability of dairy operations.