Feeds for dairy cows are often valued according to their price per megajoule (MJ) of Metabolisable Energy (ME), as energy intake is usually limiting with cows during early lactation. ME is a measure of the energy available to cows, after losses from undigested feed, urine and methane are accounted for. ME has some limitations as [...]
High energy levels in fats make them useful for boosting energy intakes of cows, to increase production, improve fertility or condition at key times during the year. Unsaturated fats can be toxic to rumen microbes at high concentrations, so may adversely affect fibre degradation. Therefore, supplementary fats must be “protected” from rumen activity if they [...]
