Sire Detail - MOF 1837 (James)


We purchased James from Misty Oaks Farm (MOF) in Ohio as a ram lamb in 2018. He has grown out well here and weighed 175 pounds in December. He produced 36 lambs here in 2019 and we retained 11 of his ewe lambs.


James has excellent parasite resistance and is ranked number 5 on the Katahdin Proven Sire Trait Leader Report for Post weaning fecal egg count (PFEC). His sire is ranked number 1. His parasite resistance passed on well to our 2019 lamb crop and we are looking forward to more lambs with excellent parasite resistance out of him in 2020. 


He has good growth and excellent parasite resistance and brings good maternal traits too.We are lambing some of his daughters this spring and are looking forward to seeing how his maternal traits express in his daughters.

James has EBVs for parasite resistance at weaning (WFEC) and parasite resistance post weaning (PFEC) is at the top for the breed. His MWWT (measure of milk production and mothering of his daughters) is in the top 30%.

James made the Katahdin Proven Sire Trait Leader List for post weaning fecal egg count in 2019. (July 2019 EBVs of sires with offspring in NSIP):

Ranked number 5 on the list for Post Weaning Fecal Egg Count

Basic Detail



Birth Type


Codon 171



MOF 1604


MOF 1466

Below we show his NSIP (National Sheep Improvement Program) EBVs (Estimated Breeding Values).

We realize that not everybody is familiar with this.

NSIP Detail

ID 6400192018MOF837

* Data at NSIP link is updated less frequently.

Values in parenthesis below indicate where the value preceding it falls in the NSIP percentile report. 

E.g. WWT 2.26 (85%) : This value is in the highest 15% in NSIP for WWT, about 85% of animals have a WWT that is lower than this value and 15% of animals have a WWT that is higher than this value.

Data Date

# Offspring

# Flocks





0.140 (50%)



1.640 (60%)



2.041 (50%)

0.802 (40%)

Parasite Resistance



-99.98 (100%)

-102.18 (100%)




0.192 (10%)

0.265 (85%)



0.592 (70%)


4.6% (30%)


7.8% (40%)


Not available

Hair Index

104.73 (50%)

Percentile Summary

The Radar Chart below provides an overview of where the sire EBVs are ranked on the NSIP percentile report. The 100th band is the top performing and 0th band is the bottom performing, the 50th band is the median. What is best depends on what you are looking for and what the performance of your ewes are, e.g. we do not try to maximize the NLB (number of lambs born), the 10th percentile of NLB results in about a 200% lambing rate, very high NLB is hard to support in a 100% grass/forage management system.


NSIP (National Sheep Improvement Program) Acronyms / Nomenclatures

  • BWT - Birth Weight (Top / 100th percentile is highest BWT)

  • WWT - Weaning Weight (Top / 100th percentile is highest WWT)

  • PWWT - Post Weaning Weight (Top / 100th percentile is highest PWWT)

  • HWT - Hogget Weight (Top / 100th percentile is highest HWT)

  • WFEC - Weaning Fecal Egg Count (Top / 100th percentile is lowest WFEC)

  • PFEC - Post Weaning Fecal Egg Count (Top / 100th percentile is lowest PFEC)

  • PFAT - Post Weaning Fat Depth (Top / 100th percentile is lowest PFAT)

  • PEMD - Post Weaning Eye Muscle Depth (Top / 100th percentile is largest PEMD)

  • MWWT - Maternal Weaning Weight (Top / 100th percentile is highest MWWT)

  • NLB - Number of Lambs Born (Top / 100th percentile is largest NLB)

  • NLW - Number of Lambs Weaned (Top / 100th percentile is largest NLW)

  • PSC - Post Weaning Scrotal Circumference (Top / 100th percentile is largest NLW)

  • Hair Index - (Top / 100th percentile is highest Hair Index, also called Index or USA Hair Index)

* NSIP ranking for EBVs are based on the February 2020 percentile report. Learn more.