Over the past year, Wynnstay’s Dairy Technical Team has collaborated with the University of Nottingham's Centre for Dairy Science Innovation to implement a soya-free diet for the university’s dairy herd. The work conducted at the university’s farm has shown that dairy cows can thrive on this optimised, soya-free diet, not only increasing milk production from forage but also maintaining high milk quality.
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.
Getting your cows and heifers out of negative energy balance sooner and getting them gaining weight earlier is the key to improved conception rates. A large-scale study of over 1887 Holstein dairy cows by Professor Paul Fricke of Wisconsin University, looked at the effect changes in liveweight on conception rate to first service.
Dietary fats are an essential element in dairy cow nutrition. Traditionally, fats have been fed to increase the dietary energy, due to their high energy concentration; around 2.25 times higher than other nutrients, molecules react with a glycerol molecule.
The transition period for the dairy cow; three weeks prepartum, into three weeks postpartum is the most important phase in the lactation cycle. Rightly, transition management is receiving much greater attention and more importantly so is the nutrition.
Cows do not have a Crude Protein (CP) requirement, Varga et al (2007). Yet, for many years CP has been used when formulating diets, and this often continues to be the case. Cow’s have a requirement for Amino Acids (AA), not protein, and the supply of the AA is predominantly produced by the cow herself in Microbial Protein (MicP) in the rumen. Together with Rumen Undegradable Protein (RUP) and Endogenous Protein (EP), this makes up the supply of Metabolisable Protein (MP) to the small intestine. Both MP and the component AAs are then absorbed by the small intestine and used for protein synthesis and meeting the needs of the cow for: maintenance, growth, reproduction and lactation.
