Sire Detail - GBR 8202 (Pitbull)

Pitbull was a big boy from the start, he weighed in at 17 pounds on his first day, luckily his mother had no problems delivering such a big boy. He just kept on growing to be the heaviest lamb we have ever had at weaning (96 pounds at 90 days old). He is a single but his dam had triplets in 2017 so we don’t hold that against him.


He has excellent growth, very good parasite resistance as well as good maternal traits. We did allocate ewes with lower birth weight EBV’s to him in order to bring down the birth weights in his offspring.


He is a son of Midnight and shares in his looks, growth and parasite resistance while bringing improved maternal traits from his dam.

Basic Detail



Birth Type


Codon 171



WHK 1352


NGM 1735

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 6401552018GBR202

* 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 2.3 (15%) : This value is in the top 15% in NSIP for WWT, about 15% of animals have a WWT that is equal or better than this value and 85% of animals have a WWT that is worse than this value.

Data Date

# Offspring

# Flocks





0.725 (95%)



3.619 (1%)


6.961 (1%)

Parasite Resistance



-56.67 (15%)

-73.22 (15%)




-1.239 (1%)

-1.074 (95%)



0.636 (25%)


7% (60%)


11.4% (45%)

Hair Index

106.69 (30%)

Personal Growth

Birth Weight

60 Day Weight

60 Day ADG

60 Day Corrected

17.82 lb.

82 lb

1.07 lb./d

75 lb.

120 Day Weight

120 Day ADG

09/14/2018 Weight

09/14/2018 ADG 

107 lb.

0.74 lb./d

117 lb.

0.64 lb./d

Remember, the lambs get 50% of their genetics from the ram

Percentile Summary

The Radar Chart below provides an overview of where the sire EBVs are ranked on the NSIP percentile report. The 0th band is the top performing and 100th 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 90th 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 EBV Percentiles - GBR 8202

NSIP (National Sheep Improvement Program) Acronyms / Nomenclatures

  • BWT - Birth Weight (Top / 0th percentile is lowest BWT)

  • WWT - Weaning Weight (Top / 0th percentile is highest WWT)

  • PWWT - Post Weaning Weight (Top / 0th percentile is highest PWWT)

  • WFEC - Weaning Fecal Egg Count (Top / 0th percentile is lowest WFEC)

  • PFEC - Post Weaning Fecal Egg Count (Top / 0th percentile is lowest PFEC)

  • PFAT - Post Weaning Fat Depth (Top / 0th percentile is lowest PFAT)

  • PEMD - Post Weaning Eye Muscle Depth (Top / 0th percentile is largest PEMD)

  • MWWT - Maternal Weaning Weight (Top / 0th percentile is highest MWWT)

  • NLB - Number of Lambs Born (Top / 0th percentile is largest NLB)

  • NLW - Number of Lambs Weaned (Top / 0th percentile is largest NLW)

  • Hair Index - (Top / 0th percentile is highest Hair Index)

* NSIP ranking for EBVs are based on the July 2018 percentile report. Learn more.