genetic evaluation of beef cattle in the czech republic j. přibyl 1, j. přibylová 1, p. Šafus 1,...
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![Page 1: Genetic evaluation of beef cattle in the Czech Republic J. Přibyl 1, J. Přibylová 1, P. Šafus 1, Z. Veselá 1, L. Vostrý 1, J. Kopecký 2, K. Malát 2, K](https://reader033.vdocuments.net/reader033/viewer/2022052701/56649e675503460f94b62af5/html5/thumbnails/1.jpg)
Genetic evaluation of beef cattle in the Czech Republic
J. Přibyl1, J. Přibylová1, P. Šafus1, Z. Veselá1, L. Vostrý1, J. Kopecký2, K. Malát2, K. Šeba2
1Institute of Animal Science, 10400 Prague – Uhříněves, Czech Republic, www.vuzv.cz2Czech Beef Breeders Association, Prague, Czech Republic, www.cschms.cz
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Beef cattle population in % (N = 353,678)
3.7 3.42 3.045.45
43.88
36.73
3.78
05
101520253035404550
CH BS AA Beef cross Beef xCzechspotted
(Fleckvieh)
Beef xdairy
Others
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23,002 active population with performance recording
Commercial herds
155,000 cowsin a suckler system
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Cows in the active population in % (1.5.2008)
57.94
14.01
26.36
1.690
10
20
30
40
50
60
70
Purebred 75-87% 50-74% Others
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Calves born in the active population in % (control year 2006/7 )
17.1
8.2 6.53.8 2 1.8 1.1 0.4 0.1 0.7
23.6
3.3
31.2
0
5
10
15
20
25
30
35
CH BS AA LI HE BA PI GS GA HI BB SA OTH.
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BREEDING:
- Only purebred beef sires
- Sire – state licence
- Natural service majority
- AI 12.8 %, for Charolais 21.9 %
- 815 bulls enter into breeding / year
- 752 for natural service
- 85% from domestic production
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The most important paths of breeding:
- Selection of young bulls (young sires)
for herds
- Combination of parents for the
future generation of sires
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DEVELOPMENT of the SYSTEM
- Performance recording
- Genetic evaluation (BV)
- Handling of databases
- Operative feedback
to the supervisors and farmers
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Evaluated characteristics
Recorded traits Others
- health
- genetic defects
- defects conformation
- sexual dimorphism
- locomotion
- ………
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Performance recording
Field test
Calving difficulty
365 days weight
Daily gain
Birth weight
120 days weight
Scoring body measurements and
capacity
Scoring musclingand overall type210 days weight
Performance
– test stations ♂
Type
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Estimation of BV
Updated
4 times / year
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Animals in genetic evaluationTrait Animals in
evaluation including pedigree
Animals with
production records
Yearly augmentation of database –
production records
Field test
Weight at 120 days kg 331,219
106,512 8,011
Weight at 210 days kg 113,605 10,060
Weight at 365 days kg 44,585 3,498
Young ♂
Daily gain in test g/day 26,034 7,729 1,132
Type of young animals
10 traits points 44,404 17,612 5,379
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Field test
Breeding values:
Multiple-Breeds, Multiple-Traits Animal Model with Maternal effect
(5 direct + 5 maternal traits)
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yijklmnop = yri + hysij + sk+ aml
+ am + mn + pn + hdo + hmp +eijklmnop
yijklmnop - recorded performance (ce, birth, 120, 210, 365) yri - year hysij - group of jointly evaluated animals (herd-year-season) sk - sex of the animal aml - mother’s age at calving am - direct BV of the animal mn - maternal BV pn - maternal permanent environment hdo - direct heterosis of calves hmp - maternal heterosis of dams eijklmnop - residual
(am and mn with joint relationship and genetic groups according to the breeds)
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Correlations between BV of sires in consecutive years
0,84 0,860,96 0,96 0,97
0,00
0,20
0,40
0,60
0,80
1,00
1-10 11-25 26-50 51-100 100<
Number of progeny
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Own growth of bulls at performance-test stations
Breeding value:
Multiple-Breeds Single-Trait Animal Model
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Daily gains of bulls from birth
to the end of the test (Bohmanová, 2001)
1251.9 1212.1
864.7
1524.2
800
1000
1200
1400
1600
0 - 120 120 - 210 210 - beginningof the test
test
Age days
g/da
y
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yijklm = hysi + amj + chk + atl + gm + eijklm
yijklm - recorded daily gain in test
hysi - group of jointly evaluated animals (station-year-season)
amj - mother’s age at calving
chk - class of the herd from which the individuals came according to the average gain
atl - regression on the age of introduction into the test
gm - BV of the animal with genetic groups according to the breeds
eijklm - error
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Type traits of young animals
HS - height at sacrum BL - body length LW - live weightCW - front chest widthCD - chest depth PE - pelvis (length and
width)
SM - shoulder musclingBM - back muscling RM - rump musclingPT - production type
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Breeding values:
Multiple-Breeds, Multiple-Traits Animal Model (10 traits)
Traits two groups:
1) Body measurements and body capacity ( HS, BL, LW, CW, CD and PE)
2) Muscling and overall type (SM, BM, RM and PT).
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First group: yijklmn = hysi + sj + amk + ael + gm + eijklmn
Second group: yijlmno = hysi + sj ael + bdgn + gm + eijlmno
yijklmn (yijlmno) - scoring of the trait hysi - group of jointly evaluated animals
(herd-year-season) sj - sex of the animal amk - mother’s age at calving ael - regression on age at evaluation bdgn - regression on daily gain from birth gm - BVof the animal
with genetic groups according to the breeds eijklmn (eijmnol) - error
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Relative BV of sire -
muscling
SEUROPPoints
81 – 90 2.42
91 – 100 3.25
101 – 105 3.30
106 – 110 3.36
111 – 115 3.69
116 – 120 3.80
Slaughtered sonsaccording to BV of sires for
muscling
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Selection indexes for young bulls
IM - terminal crossing
IZ - foundation sires
IS - common beef herd
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The sources of information - BV:
- Field test -10 BV for direct and maternal effects
for easy calving and growth,
- Performance-testing stations - BV for
daily gain bulls
- Type traits of young animals -10 BV
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Highest importance in the breeding objective
- Direct effects for daily gain until weaning
and after weaning
90% to 96%
of the total selection effect
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The time trend of BVof Charolais bulls
96,00
98,00
100,00
102,00
104,00
106,00
2000 2001 2002 2003 2004 2005 2006 2007
Calving directCalving maternalGrowth directGrowth maternalMuscling
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Future development
female fertility direct evaluation of carcass traits.
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ORGANIZATION OF BEEF
www.CSCHMS.CZ
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MINISTRY
ČSCHMS PrahaCzech Beef Breeders Association
(CBBA)
1990
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CHAIRMAN
ČSCHMS Praha (CBBA)
election
BREEDERS
(voluntarily)
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CHAIRMAN
EXECUTIVE MANAGER
(employee)
7 PROFESSIONALS + SECRETARY
(employees)
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BREED CLUBS
CHAIR PERSONS
(elected)
coordination of breeds
ČSCHMS Praha(CBBA)
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PLEMDAT ČMSCH a.s. (CMBC)
BREEDERS
state responsibility BV
calculation
central evidence
of animals
ČSCHMS Praha(CBBA)
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PLEMDAT
RESEARCH
ČSCHMS Praha(CBBA)
ČMSCH a.s. (CMBC)
BREEDERS
state responsibility BV
calculation
central evidence
of animals
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PLEMDAT
RESEARCH
ČSCHMS Praha(CBBA)
ČMSCH a.s. (CMBC)
BREEDERS
state responsibility BV
calculation
central evidence
of animals
INSEMINATION COMPANY
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INSPECTORS HERD
BOOK
ADMINISTRATION
- PERFORMANCE RECORDING
- EVALUATION OF ANIMALS
- PROMOTION OF BEEF CATTLE
- SUBSIDIES …….
ČSCHMS Praha(CBBA)
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INFORMATION FLOW
BREEDERS
- CONTACT WITH INSPECTORS
- PRINTED REPORTS
- PUBLICATIONS
ČSCHMS Praha(CBBA)
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- ANNUAL
REPORTS
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- ASSOCIATION MAGAZINE
4 x / year
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WEBSITE – updated daily
www.CSCHMS.CZ
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- Internet Tool for Breeders
- Breeding Programmes
- Interactive Database of Animals
- On – Line Performance Recording
- Breeding Bull Search Database
- BV
- News – vet.
– economic
– husbandry …………….
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Thank for your attention
See you soon in the Czech Republic