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The Katahdin Sheep Blog

The Katahdin Sheep Blog
USDA Sheep Auction Report
  • Breeding (20)
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Archives

Let’s Make a Grazing Chart Together (Part 1)

Eastern Alliance November 9, 2025

I hope you enjoyed Troy Bishop’s EAPK monthly webinar on Grazing and Forage Planning. Don’t worry if you missed it, a recording is available at

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Two Brothers: A Journey Through Changing EBVs

Eastern Alliance October 5, 2025

Let’s go on a journey with two Katahdin full sibling ram lambs and follow them as their EBVs change when their own performance is measured.

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Selecting the Optimal Sheep for Solar Grazing

Eastern Alliance September 12, 2025

While this article focuses on solar grazing, the principles discussed are relevant to all low-input, grass-based production systems. This article was originally published in the

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Producer Profile: Daniel Ulry, Ulry Farms, OH

Eastern Alliance September 2, 2025

Growing up in 4H, Daniel Ulry is a shepherd who has dabbled in many areas of the sheep industry. His experience spans three decades and

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Why you should NOT use lye as a dewormer

Eastern Alliance August 26, 2025

There’s been some talk lately on social media about using lye to deworm livestock and you may be wondering if it works. As with so

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The potential of genomic selection for improving ewe longevity

Eastern Alliance August 18, 2025

Sheep GEMS News Brief 16 – July 2025 In a previous article, we highlighted the need for genetically improving the length of ewe productive life

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Is the length of productive life a concern in the U.S. Katahdin ewes?

Eastern Alliance August 18, 2025

Sheep GEMS News Brief 15 – June 2025 Ewe productive longevity, which is the number of days between a ewe’s first and last lambing, positively

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Understanding How the Heat Beats Your Sheep

Eastern Alliance August 8, 2025

Have you felt pretty beat up by the heat when you work outside for long hours in the summertime? Well, let me tell you that

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What’s Next for Eco-Management Clusters?

Eastern Alliance July 7, 2025

Sheep GEMS News Brief 14 – May 2025 Previously, we introduced the concept of eco-management cluster—groups of flocks that share similar climate and management practices.

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Understanding Eco-Management Clusters

Eastern Alliance July 7, 2025

Sheep GEMS News Brief 13 – April 2025 Sheep producers across the U.S. operate in a wide range of environments—from humid grasslands to dry, high-elevation

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Lambing Due-Date Calculator:
Enter Date of Breeding:
(MM/DD/YYYY format)
Expected Lambing Date:
Range of Lambing Dates:

Gestation in sheep varies from 142 to 152 days with the average being 147 days. Just like people, individual pregnancies can vary,  gestation periods of 138 to 159 days are not unheard of. Ewes carrying multiple lambs tend to have shorter gestations while male lambs (and heavy birth weight lambs) are usually carried for longer than female lambs. The form above calculates the lambing date based on a 147 day gestation period.

© All rights reserved Eastern Alliance for Production Katahdins, images property of EAPK can’t be used without permission. Information provided is for information only and is the opinion of the author. EAPK tries to regularly update and add information to the web site, but makes no warranties (express or implied) about the information on the web site. It is the user’s responsibility to evaluate the accuracy and completeness of any content appearing on the web site.

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