Oldenburg and Holland are both well-known dairy cow breeds, but you need to consider the purpose and environment before choosing. Oldenburg cows have high milk production and are suitable for large-scale farming and mechanized feeding, but their digestive system is relatively fragile, so you need to pay attention to feeding and management. Holland cows have moderate milk production, but stable quality, and are suitable for small-scale farming and organic farming. At the same time, Holland cows have strong cold resistance and wide adaptability, and are suitable for various environments. In summary, different breeds can be selected for different farming needs and environmental conditions.