2005 2006 2007 2008 2009
Number of Dairy cows
35379 39153 43945 43663 47627
Mean of milk production per cow (kg/year)
7078 7122 6927 7197 7364
Mean of fat percentage
3.48 3.47 3.42 3.48 3.48
Mean of protein percentage
3.07 3.30 3.28 3.31 3.21
Culling rate in percentage*
19 18 25 18 17
Culling percentage due to diseases
9.98 9.35 15.01 9.33 8.00
Culling percentage due to non-productivity
3.7 2.46 3.04 3.20 4.60
Culling percentage due to less production
0.4 0.6 0.63 0.40 0.72
Culling percentage due to ageing
0.20 0.53 0.54 0.62 0.65
Culling percentage due to abnormal teats
0.29 0.22 0.21 0.23 0.21
Culling percentage due to dystocia
0.23 0.26 0.28 0.25 0.33
Culling percentage due to lameness
1.80 2.10 1.79 1.57 2.14
Culling percentage due to mastitis
1.33 1.51 1.70 1.78 1.53
Culling percentage due to genetic disorders
0.64 0.70 1.02 0.95 0.68
*Culling rate in percentage=Total number cows culled/Total number of cowsĂ—100
Table 2: The status of Holstein farms from 2005 to 2009, as per some indicators of Dairy Cattle Improvement.