Sire Detail - NWT 18007 (Skipper)

This will be our first year using Skipper, he is owned by Misty Oaks Farm and bred by Hound River Farm in Georgia. His daughters will be lambing in Ohio this spring and we are looking forward to seeing his lambs here.

Skipper has good growth and excellent parasite resistance and maternal traits.

His EBVs for growth are good with weaning weight (WWT) in the top 40% and post weaning weight (PWWT) in the top 25%. He has good parasite resistance with weaning fecal egg count (WFEC) in the top 5% and post weaning fecal egg count (PFEC) in the top 10%. His MWWT (measure of milk production and mothering of his daughters) is in the top 4%,His number of lambs born (NLB) is in the top 30% and his number of lambs weaned (NLW) is in the top 25%. He is in the top 4% for the USA Hair index.

Basic Detail



Birth Type


Codon 171



WRI 6055


NWT 7034

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 6400522018NWT007

* 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





-0.035 (20%)



1.668 (60%)


3.404 (75%)


2.449 (70%)

Parasite Resistance



-90.41 (95%)

-97.19 (90%)




-0.150 (40%)

-0.425 (40%)



1.278 (96%)


12.0% (70%)


14.1% (75%)


Not available

Hair Index

108.56 (96%)

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.