JSBA Home   About Jacob Sheep   JSBA Registry Information   Member Classifieds   Fiber Listings
 

The Jacob Breed Standard is divided into three categories:

Desirable traits,
acceptable, but less desirable traits, and unacceptable/disqualifying traits.

Jacob four horned ram

Desirable traits

HEAD:

  • Slender and triangular head
  • Clear of wool forward of the horns
  • Large symmetrical eye patches incorporating the cheeks
  • Clear white blaze from poll to muzzle
  • Straight profile
  • Nasal septum and mouth should be dark pigmented in adults even thought the muzzle patch may be absent
EARS:
  • Small, erect and slightly above the horizontal
  • White, colored or spotted

EYES:

  • Clear, bright eyes, no evidence of split upper eyelid deformity
  • Color: brown, blue, or marbled
HORNS:
  • Color: black or black and white striped
  • Rams:
    • Any number provided they are well differentiated (cleanly separated) and balanced
    • Flesh between horn bases
    • Two horned rams should have wide, well spaced horns with good clearance of checks, nose, and mouth at maturity
    • Lower horns should be well spaced from face, cheeks and neck
  • Ewes:
    • Horns firm, fine featured with femininity, balanced, and well differentiated
NECK:
  • Medium length
TAIL:
  • The natural Jacob tail reaches almost to the hock
  • Is wooly, not hairy
LEGS:
  • Set square on all corners, standing firm, well-balanced
  • Fine boned and of medium length
  • Free of wool below the knees
  • Color: white with or without colored patches
  • Hooves are black or striped
BODY CONFORMATION:
  • Mature rams weigh between 120 and 180 lbs.
  • Mature ewes weigh between 80 and 120 lbs.
  • Long framed, smooth muscled with well-sprung ribs
  • Fine boned with straight back
  • The rump slopes toward the tail head
  • Rams have short scrotums holding testicles closer to the body than modern breeds
  • Ewes have small udders held closer to the body than modern breeds
BODY COLOR and FLEECE:
  • The Jacob is a randomly spotted sheep, basically white with colored spots or patches
  • Preferably an approximate 60% white and 40% black or lilac spotting
  • Skin beneath white fleece is pink, skin beneath colored spots dark
  • Fleece is a medium grade with an open character and soft springy handle (Bradford count 44-56, demi-luster)
  • Fleece staple length is 3-7 inches, fleece weight 3-6 lbs, with little grease and high yield

Acceptable but less desirable traits

HEAD:
  • Having only one of the three facial markings
  • Slipped (below the eye) eye patch or patches
  • Pink nose on young lambs
  • Slight tendency to Roman nose
  • Young lambs, up to a maximum of 6 months of age, showing baby wool forward of the horns
EARS:
  • Slightly larger but proportional to body
EYES:
  • Grade 2 or 3 split upper eyelid deformity causing no injury to the eye which would require surgical intervention
HORNS:
  • Rams:
    • Fused even horns
    • Slightly forward tipping horns which do not impair grazing
    • Insufficient spacing between upper and lower horns (must be differentiated and balanced though flesh may not be present)
    Ewes:
    • Unbalanced horn set
    • Fused horns
    • Ewes with scurs in place of lower (secondary) horns
LEGS:
  • Slightly cow hocked
  • One to three dark colored legs
  • White hooves
BODY COLOR and FLEECE:
  • Random colored patches on front half of body only
  • Not less than 15% colored markings nor more than 85% color
  • Patches of color with some bleeding, mottling or freckling
  • Small amount of freckling in white wool
  • Small amount of kemp

Unacceptable/Disqualifying Traits

HEAD:
  • Absence of facial markings
  • Wool forward of the horns
  • Large, square non-Jacob looking head
EARS:
  • Large pendulous ears and/or disproportionate to body
EYES:
  • Grade 3 split upper eyelid deformity or more, causing discomfort or injury to eye
  • Wide, broad bone structure between the eyes
HORNS:
  • Polled sheep, or sheep with scurs only.
  • Two-horned rams having small, weak, feminine looking horns.
  • Multiple-horned rams having fewer than four strong horns, with scurs in upper or lower horn position. (it is fully acceptable for rams with at least 4 or more strong balanced horns to have additional scurs or horn buds)
  • Two-horned ewes having small or weak horns.
  • Multiple horned ewes having scurs in the primary/top horn position
  • Solid white horns
  • Forward pointing horns curling towards the eyes, or growing over the nose impairing the ability to graze naturally
  • Narrow or close horns on two horned rams that lack space between the growing horns and his neck or jaw, encumbering his well being
  • Undifferentiated and unbalanced set to four horned ram, i.e., fused in an irregular pattern on one or both sides
  • Small, feminine horns on rams
  • Lower (lateral) horns that grow into the face, cheek or neck
LEGS:
  • All dark colored
  • Wool present below the knees and hocks
BODY CONFORMATION:
  • All conformational and/or congenital defects leading to unsoundness for breeding
  • Large, heavy boned
  • Fat or short tailed
  • Rams over 180 lbs.
  • Ewes over 130 lbs.
  • Long, pendulous scrotal sacks on rams
  • Large, loosely attached udders on ewes
  • Excessively large teats on ewes
BODY COLOR and FLEECE:
  • Fleeces grading 60 Bradford count or higher
  • Fleeces grading 40 Bradford count or lower
  • Double coating
  • More than 85% colored markings
  • Less than 15% colored markings
  • Short, brittle fleeces with heavy kemp
  • Fleeces on adult sheep which shed
  • Fleeces weighing 8 lbs. or more
  • Excessive quilted appearance to the fleece (where the dark fiber are shorter than the white or vice versa)
  • Excessive freckling in the white wool of young animals
 
For more information on JSBA contact: JSBA Information
To report problems or updates for this website contact: support@jsba.org
copyright © 2004 Jacob Sheep Breeders Association
Photo Policy: photos used on this website are on loan from their owners. All photos remain the property of the owners, are copyrighted to them and my not be used without explicit permission of the owners. JSBA members who abuse this policy can lose their membership in JSBA. Both members and non-members are subject to all copyright laws.
Last modified: March 2004