All good nutritionists know that every single farm has a minimum of three rations. The first is the ration that the nutritionist formulates, the second is the one that is loaded, mixed and fed out and the third is the one the cows sort out and consume. The difference between the first and final ration can be enormous & the principal affects grass-based herds as much as TMR fed ones. Afterall there is the grass that is measured (either by eye, sward stick or plate meter), the grass that is allocated to the cows (by field or fence) and the grass (and concentrate) that the cows consume and digest.
Great Hares Head dairy farm is run by Alistair, William and Hannah Lawrence, who grew hybrid rye for the first time in 2020 to feed solely as part of the dry cow diet, and saw great results in the clamp.
Transition cows are the next generation of milking cows in your herd, so every effort should be made to ensure that they have the best transition into milking and become profitable long-term herd members. Just letting one thing slip under the radar - such as diet, or space allocation - can unknowingly cause costly health problems later on.
Whatever the use and however much maize is going to be fed in the ration, optimising dry matter, starch yield and fibre digestibility is the key. The latter of the two being more significant, yet harder to measure.