Genomic evaluation of reproductive disorders in Czech Holstein cattle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F22%3AN0000155" target="_blank" >RIV/00027014:_____/22:N0000155 - isvavai.cz</a>

Výsledek na webu

<a href="https://vuzv.cz/_privat/22156.pdf" target="_blank" >https://vuzv.cz/_privat/22156.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Genomic evaluation of reproductive disorders in Czech Holstein cattle

Popis výsledku v původním jazyce

Genomic breeding values were estimated for reproductive disorders in Czech Holstein cattle. Evaluated traits were defined as binary with no case (0) or at least 1 case (1) of retained placenta (RP), metritis (MET) or cystic ovaries disease (CYS) during lactation. Dataset included 91 368 lactations of 57 788 Holstein cows calved between July 2017 and February 2022 in 95 herds for RP; 135 361 lactations of 83 564 Holstein cows calved in 116 herds for MET and 82 724 lactations of 49 130 Holstein cows calved in 71 herds for CYS. The lactation incidence was 5.46% for RP, 12.68% for MET and 9.16% for CYS. The model equation included the fixed effects of herd-year-season of calving, parity of the cow, sex of the calf (for RP and MET), the random additive genetic effect of the animal, the random permanent environment of the cow, and the random residual effects. Pedigree involved from 111 858 (CYS) to 185 874 (MET) animals. The reference population for the single-step GBLUP method was defined as genotyped (Illumina BovineSNP50 BeadChip) bulls and cows that were present in the pedigree of animals with reproductive disorders records. Estimated heritabilities were 0.02 for all traits. Resistance to RP and MET were moderately genetically correlated (0.61), while the genetic correlation of both traits with CYS did not statistically differ from 0. Estimated breeding values were normally distributed with a mean of 0.00 and SD ranging between 0.11 and 0.17. Their mean reliabilities were low due to data structure and a relatively short period of recording. The results were expressed as relative breeding values RBV (mean = 100, SD = 12, for base bulls) and reversed in the sign which means that higher RBV are connected with better resistance to partial disorder.

Název v anglickém jazyce

Genomic evaluation of reproductive disorders in Czech Holstein cattle

Popis výsledku anglicky

Genomic breeding values were estimated for reproductive disorders in Czech Holstein cattle. Evaluated traits were defined as binary with no case (0) or at least 1 case (1) of retained placenta (RP), metritis (MET) or cystic ovaries disease (CYS) during lactation. Dataset included 91 368 lactations of 57 788 Holstein cows calved between July 2017 and February 2022 in 95 herds for RP; 135 361 lactations of 83 564 Holstein cows calved in 116 herds for MET and 82 724 lactations of 49 130 Holstein cows calved in 71 herds for CYS. The lactation incidence was 5.46% for RP, 12.68% for MET and 9.16% for CYS. The model equation included the fixed effects of herd-year-season of calving, parity of the cow, sex of the calf (for RP and MET), the random additive genetic effect of the animal, the random permanent environment of the cow, and the random residual effects. Pedigree involved from 111 858 (CYS) to 185 874 (MET) animals. The reference population for the single-step GBLUP method was defined as genotyped (Illumina BovineSNP50 BeadChip) bulls and cows that were present in the pedigree of animals with reproductive disorders records. Estimated heritabilities were 0.02 for all traits. Resistance to RP and MET were moderately genetically correlated (0.61), while the genetic correlation of both traits with CYS did not statistically differ from 0. Estimated breeding values were normally distributed with a mean of 0.00 and SD ranging between 0.11 and 0.17. Their mean reliabilities were low due to data structure and a relatively short period of recording. The results were expressed as relative breeding values RBV (mean = 100, SD = 12, for base bulls) and reversed in the sign which means that higher RBV are connected with better resistance to partial disorder.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40203 - Husbandry

Projekt

<a href="/cs/project/QK1810253" target="_blank" >QK1810253: Navýšení spolehlivosti celostátního genomického hodnocení dojeného skotu zařazením krav s domácí užitkovostí do genotypované referenční populace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

INTERBULL BULLETIN NO. 57.

ISBN

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ISSN

1011-6079

e-ISSN

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Počet stran výsledku

6

Strana od-do

42-47

Název nakladatele

ICAR

Místo vydání

Montréal, Canada

Místo konání akce

Montréal, Canada

Datum konání akce

30. 5. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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