1. What is Sheep Gestation Period?

In New Zealand, the average gestation period for sheep is approximately 147 days (about 5 months). This can vary slightly by breed, with a typical range of 144-151 days.

2. How Does the Calculator Work?

The calculator uses the standard gestation formula:

This simple calculation provides the expected lambing date based on the known breeding date.

3. Importance of Accurate Gestation Calculation

Details: Knowing the expected lambing date helps farmers prepare for lambing season, ensuring proper nutrition, shelter, and veterinary care are available when needed.

4. Using the Calculator

Tips: Enter the known breeding date. The calculator will add 147 days to determine the expected due date. For best accuracy, record breeding dates when tupping.

5. Frequently Asked Questions (FAQ)

Q1: Does gestation length vary by breed?
A: Yes, most NZ sheep breeds average 147 days, but some breeds may vary by ±3 days.

Q2: Can nutrition affect gestation length?
A: Yes, poor nutrition may slightly prolong gestation, while excellent nutrition might shorten it slightly.

Q3: What's the earliest/latest lambs might arrive?
A: While 147 days is average, healthy lambs can be born from 142 to 152 days gestation.

Q4: Should I prepare before the calculated due date?
A: Yes, prepare lambing facilities at least 10 days before the expected due date.

Q5: How accurate is this for multiple births?
A: Twins/triplets may arrive 1-2 days earlier than singles, but the difference is minimal.