Mastitis is not only genetics, management has an important influence. Box-bedding, milksystems and a hygienic enviroment are crucial factors for low cellcount.
Table 1. Results found in the California, USA
|HF||G1: MON x HF||G2: VR x HF|
In France data is collected from the national milkrecording organisation.
Table 2. The number of dairies in France with SCC problems
In Holland breeding values of popular dairybreeds are published by GES. Since all red dairybreeds are published on the Red Holstein genetic basis it is very easy to compare genetic levels of populations. For udder health the following breeding values were published in August 2013.
You have to realise yourselve that these breeding values have been corrected for the positive effects of heterosis. Result mesured on cow level are therfore even better.
Talbe 3. BV Udder Health
|BV Udder Health||100||+105||+105|