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**Unformatted text preview: **First Name: OVMY it ,Last Name: Kim U‘j“ 2016/10/21 ANSC 3500 -— Animal Breeding
Exam “1- 90 points Write your answers on the iines whenever presented to you, and complete the tables with your answers wherever
available. Present the mathematical logic that led you to an answer wherever calculations are needed. Fill in the blank {1 point each). 1. The range of values for a correlation coefficient. ‘1 ‘W \ J
2. The range of vaiues for a heritability estimate. 0 ‘1"! \ /
LO
F5 3. The range of values for accuracy of selection. 0 > i 0 'h \ O +0 1—"
halo maria l - - /
4. The range of values for repeatability estimates. l
2
5. The average ratio of a contemporary group. \ 0 O Add the ietters to the right column according to the corresponding item on the left column (1 point each]. /
6. eritabuity bwthe effect of genes in the dam of an individual that influence the
7. (to) accuracy of seiection performance of the individual through the environment provided by the dam.
8. Mrepeatabiiity L/a measure oi strength of the relationShip between ma records for a
9. (d) contemporary group trait in a population 10. {e} breeding value a} ”genetic phenomenon of a singie gene affecting more than one trait. liﬁ'genetic correlation g/the difference between the mean phenotype of those individuals selected to
12.,lg-lrselection intensity
13Watemal effect 14.,ﬁ1’ple‘rotro py be parents and the average phenotype of ail potential parents, expressed in standard deviation units of the phenotype. is measure of the strength of the reiationship between phenotyoic values
and genotypic values for a trait in a population. £measures the strength ofthe relationship between breeding values in one
trait and breeding values in another trait. /
Q the proportion of an individuai's ganotvpic value that is due to independent and therefore transmittabie gene effects.
/ a group of animals that have experienced a similar environment with respect to the expression of a trait. bye measure of strength of the reiat‘ronship between true breeding vaiue and their predictor. Page 1 of 6 First Name: ( All): t ,Last Name: RA “(BE 3 2016/10/21 0\ 15. (9 paints) Considering the adjustment factor for weaning weight (lb) and accompanying information presented below:
Adiusimeni (Eb) _ 4 _ A
E'he Formula for adjustment of weaning weight is:
Age of dam (yr) Males mai measured Wt. -biri:h We .
2 50 54 (W) x205 + birth Wt. +c1ge_ciamfactor
E.__~_4G 36 Average of adjusted weaning weight = 686 lb
4 20 ‘8 Variance of adjusted weaning weight = 5,792 lb2 .
5m! 5 D D Variance of breeding value of adjusted weaning weight = 1,564 IlaZ
i1+ 20 1
And the data beiow from animals maintained in a contemporary group, fill in the agar; ceﬂs:
i l f—Adjusted ' Weaning Fredisted
Age of clam Birth Weaning 3 Age ofweighing
Calf Sex weaning weight breeding value
(year) weight a weight (days) i ‘
i ‘ ‘ weight 1 ratio ***
‘ A ,
r 81 ‘ 221 -
i 1i Male m 721 680 (small NIH-‘79 1.6%) i
i 8 Male 4 67‘ 543 221 C)77777_ 1” :1 Ml‘li‘ . 1-, ff: Only calculate the values for the emgty ceiEs in this tahia icelis not crossed}. :- W Predict breedin value usin the deviation of the ad‘usted weight in this contemgerag group. EBV =h2x(P——;2) 7 z
***Siiowyourcaiculationson pageZ/3*** 'n 3 J—dz V
5 P
U“? i" (0‘50"8‘wa‘é48‘4un: UNLU/ : 10,94
11“ 91911.
/ 1' 011/
[Nib .u x, _
Mi , met:
We t
Ewwxw—n r
0.11 x Mae—ma '— Lem.
'. Ski - /
CM % UAW?" Shag" mi 220 : awn
Wrin— {we 1 111/
Efﬁgy PageZofE ii?“ (6%.? men?) : "ii .‘Léio Firsmame; 0“ Vi ,Last Name: R/LAU‘“ 2016/10/21 Page 3 of 6 First Name: U“ h I; , Last Name: IQ (1W 2016f10/21 16. (5 points: What is the effect of reducing the variance of contemporary group on heritability? Explain briefly and
f, legiblywhy?
“(MUM in; valuing ii a wmmiimm
Gimme WM) m Mtg-i M irmm‘mw /
mix—limix.ﬁ M (Mam Haiti/Wit UH.
\(Liii‘nuiit traits iii a (limit: .m mm.
\ “Uiimbk. catﬁsh ~211th Niel. gum cue. ”p 17. (10 points) Calculate the rate of genetic change in feed conversion in a' swine population given the following:
Heritability: 0.35; Phenotypic standard deviation: 0.2 ib; accuracy of male selection: (18* accuracy of female selection:
0.5; Intensity of male selection: 72.4‘ intensity of female selection: —1.5; generation intervai for males: 1.8 years;
- -—‘ ‘ _.....
eneratlon interval forfemales: 1.8 ears. ' 1‘ "-
g V ., h - U ‘3‘ iii/i: u L
Lm A L+ L0 emit-M3361“
2 Li0<%--1~\\+to.9 . “mil Mg r 51m 4‘41”! /
Lg ’Hﬁ (Evens / - ’zia'i I (MW —O.’5lSDb ,
_ _*-~--.—..___.. —: ..—————- a .— I
M m. -l 0 oerwl, 18. (10 points) Calculate the estimated progeny difference value fur birth weight of a steer given the following pieces lo ofintormation: Maggot phenotype torjjgioffspring ésﬂa‘heritabilitv: 0.32
EH) : 9W \Qtwm , Li, a a 20:5 / L‘iﬂrhh“ Lida—“Lo m) d 511% ,
S . . . - . 199 ‘0.”5072’ 19.6%:
19. (5 points) Caiculate the accuracy of an estimated breeding value of a steer given the following pieces of
information: Average of phenotype of five half sits is 55m. heritability: 0.25 W —. HAW)» ,3; ,
ktiﬂmvhw I lit». «BANG-Km —
W : 0.19 / Page 4 of 6 FirstName: (AG-WE ,LastName: EQMAQ _ 2016/10/21 Use the tabie below to answer the next two questionsi "TabEe 3‘ Estimaees oi genetic (below diagonal), phenotypic (above diagonal) correiations, heritabilities (diagonai)
and their standard error of estimates among performance traits." um ri‘zlgsx'aﬁu
um 10.": . ' .: “42M- -.
9. 16:33.52
magma; ' ' ﬁ33:&ﬂ‘
(1:13.64 -
(Marina 7 autumn
'7 mini M. mm W ma Birth weigh! Mgr WKWSNHQ migh (keii Mum-Hubs” «elem Elm: ENDWnEnd Want mgr we: iiwmga daily gain {yd} UFD-Uinaswnd lucid-E dlmh (mmi- um irmurd loin dapm (mm
“WSW. iama'id EMF; Fciand immersion ruin. ‘rm signiﬂam mmaans m boim (Rom) dii-i D,i371/ﬁimii.pune.ﬂi mmmaa 0313 MM “Nine nmﬁm‘ﬂn miNed "um Minr er al. 2011 Dim are NEW/lieumaimales.nrgfpiosaaeta'tlc‘eiid=1m137111mimai pone 0123105 g 28 (5 points) )Which trait would you expect to have the] owest rate of genetic change? i0W€$‘\' weaning weight (WNW) @361 mwzgnmNDW) c. feed conversion (FER) d. uitresound iFN'E (UIMF)
’ i.“'\ 13-??? ~0 7A) “'0.'1{a g 29 (5 points] )Which piece of information did you use to choose your answerfor question 28? inikmg {H NKWBMWWS W . W M
William aim iowui uaiUc I 0.01. “a Use the table below to answer the next two questions. Table 3 Esfz'mm efgmerie mrrefaﬁzms chew: and phenetygzic
correlations below diugmmi ﬁemm'n body candidate 5cm (8C8),
days reﬁys: semis; {DPS} mmaretnm mfg (NR8) lactation somaéic
cell scare {LSCS}, )smd 305 «jay yidde ef méﬂc (MILK) fat, {FA}? and pmz‘ein {PROT} foggﬂier with their sfmjma’ ermrsi (5 e.) m P1 L
pmwthcsis. Regain; m. $9175.51} en man-memm wwdei mﬁanw
canipunenﬁ whine i207: method scs NER m _\ + +\
433- ens wee, Am .639 %'=éa65 $24 4122 .612 STY‘mﬂﬂﬂS-i POS%\\0L2,
r013. $27 3-12,, 9.13. {:13 ea; 4+; 0 \ouim 190551 W Body canditicn score 3:35
Non return rate NRR (3:02
Days to first service DES ~G-M I
Lactation SDmafiC ceii score LSCS 4392 $32 005
305mg yieid Bf milk MILK 43.15 "0.12 9.15 fat EAT ~01}. 4%}? 0:09
protein SWOT 42-11 —04i}9 0113 i Page 3 of 6 pWW'i‘jipiL -S First Name: U {h R , Last Name: KIA-W 2016j10/21 E gs
'3 "-5 w 3C! {5 points} Which two traits would you expect to have the lowest ff: Non Return Mt: [Nam WM ”Md 42:";
wt. .and W ﬁg; 31 (5 points) Which piece of information did you use to choose your answer for question 30? is 6
MW, 094 at ”Mt “Cf” \Itihq Oilago me Valve 0“), Wig
‘ I I a a ‘ o ’v . v" I I agﬁé i ' v ' '
Looking at this portion of a sire summary with EPDs and accuracies (Act) we will designate each of three sites: A, B, and C. -- m I. II. II.
lﬂdﬁiﬂm _ +1§ {-35 +3 439 Q13 $1.56
-IIIIIIIII BW: birth weight, WW: weaning weight, YW: yearling weight, 5C: scrotal circumference. 5 32 (5 point} Considering b'rth weighg which sire has the EPD estimate that best approximate to the true breedingvalue?w A Pt‘ 0 ‘1‘
Pa 0 rare (“mom 33 {5 point) What was the rationale for choosing your answer for question 32? 5 give A has m may“ GLcum ”Umlﬂcﬂ'l
Utmm: 0m 7.: ewes V‘L m Scum; wma-iui (1ch em
34 (5 pointslw t Is the expected difference between the avenge peﬁgcmance of progeny sired by A and the
average performance of progeny sired by Sire C for weaning weight? 2% J
5% ~23 ”3 1% Page 6 of 6 ...

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- Spring '13
- Kuhlers
- Standard Deviation, contemporary group, clam Birth Weaning, weight breeding value, contemporary group trait, fur birth weight