ANSC 2301 Lab Review Exam Questions
and Answers
A lamb carcass can be divided into two halves. the half coming from the anterior (head)
of the carcass is known as the _____ , while the half coming from the posterior (tail) end
is known as the _____ . - Correct Answers -fore-saddle, hind-saddle
To accurately evaluate the rib eye area and fat thickness of a lamb carcass, the carcass
must be split in half between the _____ & _____ ribs. - Correct Answers -12 & 13
Numerical yield grades serve as the estimate for percentage of cuts from a carcass and
are the highest for a yield grade _____ carcass and the lowest for a yield grade _____
carcass. - Correct Answers -1 (high yielding, high cutability, low fat), 5 (low yielding, low
cutability, high fat)
4 lean cuts of lamb - Correct Answers -leg, loin, rack, shoulder
the average dressing percentage for slaughter steers and heifers is - Correct Answers -
63%
which of the following does not accurately describe USDA meat grading?
a. use is mandatory
b. performed by USDA-AMS employees
c. services paid for by the company requesting services
d. none of the above, they all accurately describe meat grading - Correct Answers -a.
use is mandatory
beef carcasses must be ribbed between the ____ and _____ ribs before being
presented for grading by USDA graders - Correct Answers -12th and 13th
The quality grade of lamb carcasses is determined by evaluating which three carcass
attributes? - Correct Answers -conformation, lean quality, maturity
Prime and choice grading carcasses must also have at least a thin covering of _____ -
Correct Answers -fat (<.08 in)
At what two locations on a lamb carcass would you evaluate flank streakings? - Correct
Answers -primary and secondary flank streakings
, The vast majority, >95%, of LAMB (young) carcasses have a quality grade of USDA
____ or ____ - Correct Answers -prime or choice
List two other factors in addition to the type of joints present on the trotters(wrist/ankle
that are considered by a grader when signing an ovine carcass to a maturity category -
Correct Answers -color and shape of ribs, and lean color
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
What are the final yield grades of each lamb? - Correct Answers -1) 4.7
2) 2.7
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
Which of the two produce a higher cutability carcass - Correct Answers -the leaner one
(#2)
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
Which one has a higher numerical YG - Correct Answers -The fatter one (#1) with a 4.7
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
and Answers
A lamb carcass can be divided into two halves. the half coming from the anterior (head)
of the carcass is known as the _____ , while the half coming from the posterior (tail) end
is known as the _____ . - Correct Answers -fore-saddle, hind-saddle
To accurately evaluate the rib eye area and fat thickness of a lamb carcass, the carcass
must be split in half between the _____ & _____ ribs. - Correct Answers -12 & 13
Numerical yield grades serve as the estimate for percentage of cuts from a carcass and
are the highest for a yield grade _____ carcass and the lowest for a yield grade _____
carcass. - Correct Answers -1 (high yielding, high cutability, low fat), 5 (low yielding, low
cutability, high fat)
4 lean cuts of lamb - Correct Answers -leg, loin, rack, shoulder
the average dressing percentage for slaughter steers and heifers is - Correct Answers -
63%
which of the following does not accurately describe USDA meat grading?
a. use is mandatory
b. performed by USDA-AMS employees
c. services paid for by the company requesting services
d. none of the above, they all accurately describe meat grading - Correct Answers -a.
use is mandatory
beef carcasses must be ribbed between the ____ and _____ ribs before being
presented for grading by USDA graders - Correct Answers -12th and 13th
The quality grade of lamb carcasses is determined by evaluating which three carcass
attributes? - Correct Answers -conformation, lean quality, maturity
Prime and choice grading carcasses must also have at least a thin covering of _____ -
Correct Answers -fat (<.08 in)
At what two locations on a lamb carcass would you evaluate flank streakings? - Correct
Answers -primary and secondary flank streakings
, The vast majority, >95%, of LAMB (young) carcasses have a quality grade of USDA
____ or ____ - Correct Answers -prime or choice
List two other factors in addition to the type of joints present on the trotters(wrist/ankle
that are considered by a grader when signing an ovine carcass to a maturity category -
Correct Answers -color and shape of ribs, and lean color
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
What are the final yield grades of each lamb? - Correct Answers -1) 4.7
2) 2.7
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
Which of the two produce a higher cutability carcass - Correct Answers -the leaner one
(#2)
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
Which one has a higher numerical YG - Correct Answers -The fatter one (#1) with a 4.7
A pair of 12mo market lambs:
1) 165lbs ewe lamb w/ 0.43in fat, a 4.2 REA, conformation score of high Prime, and a
leg score of 15
2) 145lbs lamb w/ 0.23in fat, a 3.9 REA, conformation score of low Prime, and a leg
score of 13
