Summitholm Holsteins
Ontario, Canada
| Land area, hа | 350 |
| Herd size, head | 680 |
| Dairy herd, head | 330 |
| Breed | Holstein |
| Average milk yield per cow per year, kg | 12,800 |
| % fat | 3.8 |
| % protein | 3.25 |
| SCC | <130 |
| Milkings per day | 3 |
| Milking system | «parallel» 2×12 |
| How many lactations a cow is kept in the herd (average) | 3.2 |
| Semen dozes per conception | 2.3 |
| Major health problems | mastitis |
| Hoof trimming, how many times and when | twice a year |
| Liquid feed for calves before weaning | milk replacer |
| Age at first insemination, months | 12.5 (weight 360-380 kg) |
| Age at first calving, months | 22-24 |
| Milking cow ration | |
|---|---|
| Ingredients | |
| Corn silage | |
| Haylage | |
| Corn | |
| Soyabean meal | |
| Minerals and concentrated feedstuff | |
| Flax seeds | |
| Hay | |
