Disease reduction

HOW DO VIKINGDEFENCE BULLS PERFORM?

You may ask how great a reduction in diseases you can expect by selecting a sire with a breeding value (EBV) 110 or 120 for a specific health trait or sub-trait? Here’s the answer. 
 
A bull with a breeding value of 100 is the population average for the breed. Based on phenotypic values for each breed % difference relative to breed population average or a bull with EBV 100 is calculated.  

Bull performance - Download PDF

VIKINGHOLSTEIN

Hoof Health

  For the four hoof disorders - Sole ulcer, Verrucose dermatitis, Interdigital Hyperplasia, Cork screw claw, a bull with a breeding value (EBV) of 110 means that his daughters have 30% less disease and 120 - 60% less disease relative to a bull with EBV 100. For the six hoof disorders – Digital dermatitis, Interdigital dermatitis, Heel horn erosion, Sole haemorrhage, Double sole, White line disease, a bull with EBV 110 will decrease disease by 8-12% and a bull with EBV 120 – by 16-24% relative to a bull with EBV 100. 
 

Udder Health

For mastitis – a bull with a breeding value (EBV) of 110 means that his daughters would have 21% less disease and 120 - 42% less disease relative to a bull with EBV 100. Mastitis frequency for VikingHolstein population average in Denmark, Sweden and Finland is around 13%. 

General Health

For reproductive disorders – a bull with a breeding value (EBV) of 110 means that his daughters would have 15% less disease, while 120 means 30% less disease relative to a bull with EBV 100. Disease frequency for reproductive diseases for VikingHolstein population average in VikingGenetics countries is around 7% for early reproductive disorders and 5% for late. As for metabolic disorders – a bull with a breeding value (EBV) of 110 means that his daughters would have 20% less disease, while 120 means 40% less disease relative to a bull with EBV 100. Disease frequency for metabolic diseases for VikingHolstein population average in VikingGenetics countries is around 5%.