Final Exam - Data Selection

Question 1

What are the 5 category for cattle data

Answer 1

Reproductive Performance
Mothering Ability
Growth Rate
Efficiency of Gain
Carcass Merit

Question 2

What is a efficient herd

Answer 2

1 calf from each cow every 12 months

Question 3

What are the two ways to measure performance

Answer 3

• % Calf Crop
• Weaning weight per cow exposed

Question 4

What are the two individual performance

Answer 4

Reproduction
Scrotal Circumference

Question 5

What is calving interval

Answer 5

reproduction

Question 6

Calving Intervals
* # of days from —- until the next calf
* — Days
* —- Window

Answer 6

calving
365
Breeding

Question 7

Scrotal Circumference
* —- ability to produce —-
* Earlier onset of —

Answer 7

Bull’s
sperm
puberty

Question 8

Indicative of mothering ability/milk

Answer 8

Weight of Calf at Weaning

Question 9

Need to be standardized by calf age (205 day)

Answer 9

Weight of Calf at weaning

Question 10

What is the standarized in weight of calf at weaning

Answer 10

Weaned the same day even though they are not born the same day

Question 11

Which is heavier earlier or later calving cows

Answer 11

earlier calving cows are heavier weight

Question 12

High birth weights equals to what

Answer 12

dystocia

Question 13

Benefits of of high birth weights

Answer 13

Increased weaning and yearling weights

Question 14

How to solve the high birth weight problem

Answer 14

Select bull that has been tested for calving ease

Question 15

Single most accurate of a calf’s economic value

Answer 15

Yearling Weight

Question 16

Combines preweaning growth with gain from weaning to a year of age

Answer 16

Yearling weight

Question 17

Yearling weight heritability is moderately

Answer 17

high

Question 18

4 Carcass Characteristitcs

Answer 18

Ribeye area
Backfat
Marbling
Carcass weight

Question 19

What are the 3 carcass characteristic you could measure using a ultrasound

Answer 19

Ribeye Area
Backfat
Marbling

Question 20

Predictor of how future progeny should perform relative to others

Answer 20

Expected progeny differences

Question 21

Multi-trait selection tool specific to a certain breeding objective (express in $)

Answer 21

Economic Index

Question 22

What are the 5 Production EPDs

Answer 22

Calving Ease (CE)
Birth Weight (BW)
Weaning Weight (WW)
Yearling Weight (YW)
Scrotal Circumference (SC)

Question 23

High or Low Calving Ease

Answer 23

High

Question 24

High or Low Birth Weight

Answer 24

Low/average

Question 25

What are the 4 Maternal EPDs

Answer 25

Heifer Pregnancy (HP) Milk Mature Weight (MW) Cow Energy Value ($EN)

Question 26

High or Low Heifer Pregnancy

Answer 26

High

Question 27

High or Low Milk

Answer 27

Average

Question 28

High or Low Cow Energy Value

Answer 28

Low

Question 29

What are the 4 Carcass EPDs

Answer 29

* Carcass Weight (CW) * Marbling (MARB) * Ribeye Area (RE) * Fat Thickness (FAT)

Question 30

What are the 5 Indexes

Answer 30

* Angus-on-Holstein ($AxH) * Maternal Weaned Calf Value ($M) * Grid Value ($G) * Beef Value ($B) * Combined Value ($C)

Question 31

What is Combined Value

Answer 31

Combines $M and $B

Question 32

What is the standard cow breed

Answer 32

Angus

Question 33

What are the 3 measurement for Sow Productivity

Answer 33

Wean to Estrus Litter Size Litter weight (21 days)

Question 34

Time interval from the date of weaning until a sow returns to estrus

Answer 34

Wean to Estrus

Question 35

Number of live pigs born per litter

Answer 35

Litter Size

Question 36

Indicator of mothering/milking ability of sow

Answer 36

Litter Weight

Question 37

What is Days to 250

Answer 37

of days it takes to reach 250 lbs.

Question 38

How is Days to 250 measured

Answer 38

actual days or EPD

Question 39

What is Feed Efficiency

Answer 39

Feed to Gain ratio

Question 40

How is feed efficiency impacted by

Answer 40

the environment, feed intake over maintenance, and composition of gain

Question 41

How to select for better Feed Effienciency

Answer 41

later maturing, leaner stock

Question 42

Carcass Characteristics of Swine

Answer 42

Backfat Loin Eye Area Intramuscular Fat

Question 43

2 Carcass Characteristic that can Scanned/Actual Data or EPD in swine

Answer 43

BackFat Loin eye area

Question 44

Marbling

Answer 44

Intramuscular Fat

Question 45

What are the 3 indexes in swine data

Answer 45

Maternal Line Index Terminal Sire Index Sow Productivity Index

Question 46

Emphasis on maternal traits; use when selecting replacement gilts or boars to make replacement gilts

Answer 46

Maternal Line Index

Question 47

What is included in Maternal Line Index (4)

Answer 47

NBA 21 day litter weight Days to 250 Back fat

Question 48

Growth and leanness

Answer 48

Terminal Sire Index

Question 49

What is included in terminal sire index (2)

Answer 49

days to 250 and backfat

Question 50

Utilized to identify top producing sows

Answer 50

Sow Productivity Index

Question 51

What is included in Sow Productivity Index (2)

Answer 51

Numbers of pigs born alive 21 days litter weight

Question 52

What are the three reproductive efficiency in sheep

Answer 52

Ewes that have lambed tine and triplets Early Puberty Multiple birth is a increased reproductive efficiency

Question 53

Issue with Multiple birth is a increased reproductive efficiency

Answer 53

low heritability

Question 54

First indicator of growth rate, heavier birth weight lambs grow faster

Answer 54

Birth Weight

Question 55

Might have lambing problems if too big

Answer 55

Birth Weight

Question 56

Ewe’s milk producing ability and early indicator of growth potential

Answer 56

Weaning weight

Question 57

What are the days that measures weaning weight in sheep

Answer 57

60 90 120

Question 58

days of Reflective of milk producing of ewe

Answer 58

60 days

Question 59

Growth Potential days

Answer 59

90 and 120

Question 60

Post-weaning weight

Answer 60

Growth Rate

Question 61

What is the typical age of growth rate

Answer 61

240 days

Question 62

What are the 2 carcass characteristics in sheep

Answer 62

Cutability Scanned Data

Question 63

What is FEPD

Answer 63

Flock Expected Progeny Differences

Question 64

What are the 4 traits found in the Flock Expected Progeny Differences

Answer 64

* Number of lambs born per lambing * Pounds of lamb weaned per ewe exposed * 30, 60, 90, 120, and 240 day weights * Wool production traits