Managing calving pattern
Calving pattern has a major impact on herd reproductive performance. Cows that calve in the first three weeks of the calving period typically have 6-week in-calf rates around 70% compared with 20% for very late calved cows (calved after week 9 of calving). Not-in-calf rates are also affected.
For seasonal and split calving herds
The Calving Pattern Tool enables you to measure the pattern of calvings within a given calving group and identify the gap between the actual and desired calving pattern. It also provides an assessment of the $ benefits of closing this gap through improved herd reproductive performance. Closing the calving pattern gap can also improve milk income and feed costs. Use the Length of Mating Period Tool to assess the impact of extending or reducing the mating period.
For year round calving herds
The Voluntary Waiting Period tool provides a measure of your herd’s actual Voluntary Waiting Period (VWP) and assesses the $ benefits of improved herd reproductive performance from achieving a shorter VWP.
Many different oestrus synchrony methods are in common use in lactating cows. The Guide to synchrony programs for dairy herds outlines the pros and cons of the different synchrony programs in terms of costs, resources required, complexity of management and outcomes.