Genetic relationship between foot and claw health traits and lameness in Czech Holstein cattle

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F20%3AN0000172" target="_blank" >RIV/00027014:_____/20:N0000172 - isvavai.cz</a>

Výsledek na webu

<a href="https://vuzv.cz/_privat/20167.pdf" target="_blank" >https://vuzv.cz/_privat/20167.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Genetic relationship between foot and claw health traits and lameness in Czech Holstein cattle

Popis výsledku v původním jazyce

The heritabilities and genetic correlations for foot and claw disorders and lameness (L) were estimated in the Czech Holstein cattle by repeatability linear animal models, optionally with random herd_year (hy) effects. The disorders and L, as 0/1 occurrence from calving to 305 d of lactation, 47,174 lactations of 31,750 Holstein cows were recorded on 52 farms in the Czech Republic from 2017 to 2019 using the national web application “The Diary of Diseases and Medication” designed for the continuous recording and evaluation of health traits based on the farmers. Three groups of foot and claw disorders were defined: skin diseases (SD), including digital and interdigital dermatitis, and interdigital phlegmon; claw disorders (CD) including ulcers, white line disease, horn fissures, and double sole; and overall foot and claw disorders (OFCD) comprising all the recorded disorders and L. Digital dermatitis (DD), interdigital phlegmon (IP), ulcers (U) and lameness (L) were analysed as separate traits. Lactational incidence rates (number of affected lactations/number of lactations at risk x 100) for CD, SD, and L were 9.9, 5.7, and 4.8%, respectively. Estimates of heritability were from 0.008 for IP, to 0.042 for CD and 0.043 for L or U when no random hy was employed. If random hy was included in the model heritability decreased due to the increase of the total explained variance. Phenotypic correlations of foot and claw disorders to lameness were lower than 0.069 (IP). On the contrary, those between foot and claw disorder traits were high; U and CD 0.963, DD and SD 0.823. Genotypic correlations between L and foot and claw disorder traits were low and nonsignificant, from 0.036 OFCD to 0.236 SD except for IP 0.507 (P<0.05). However, genetic correlations between three groups of foot and claw disorders and DD, IP and U were strong and significant, from 0.536 (DD and CD) to 0.971 (U and OFCD). We conclude that lameness is not applicable for OFCD definition and has to be used as a separate selection trait.

Název v anglickém jazyce

Genetic relationship between foot and claw health traits and lameness in Czech Holstein cattle

Popis výsledku anglicky

The heritabilities and genetic correlations for foot and claw disorders and lameness (L) were estimated in the Czech Holstein cattle by repeatability linear animal models, optionally with random herd_year (hy) effects. The disorders and L, as 0/1 occurrence from calving to 305 d of lactation, 47,174 lactations of 31,750 Holstein cows were recorded on 52 farms in the Czech Republic from 2017 to 2019 using the national web application “The Diary of Diseases and Medication” designed for the continuous recording and evaluation of health traits based on the farmers. Three groups of foot and claw disorders were defined: skin diseases (SD), including digital and interdigital dermatitis, and interdigital phlegmon; claw disorders (CD) including ulcers, white line disease, horn fissures, and double sole; and overall foot and claw disorders (OFCD) comprising all the recorded disorders and L. Digital dermatitis (DD), interdigital phlegmon (IP), ulcers (U) and lameness (L) were analysed as separate traits. Lactational incidence rates (number of affected lactations/number of lactations at risk x 100) for CD, SD, and L were 9.9, 5.7, and 4.8%, respectively. Estimates of heritability were from 0.008 for IP, to 0.042 for CD and 0.043 for L or U when no random hy was employed. If random hy was included in the model heritability decreased due to the increase of the total explained variance. Phenotypic correlations of foot and claw disorders to lameness were lower than 0.069 (IP). On the contrary, those between foot and claw disorder traits were high; U and CD 0.963, DD and SD 0.823. Genotypic correlations between L and foot and claw disorder traits were low and nonsignificant, from 0.036 OFCD to 0.236 SD except for IP 0.507 (P<0.05). However, genetic correlations between three groups of foot and claw disorders and DD, IP and U were strong and significant, from 0.536 (DD and CD) to 0.971 (U and OFCD). We conclude that lameness is not applicable for OFCD definition and has to be used as a separate selection trait.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40203 - Husbandry

Projekt

<a href="/cs/project/QK1910320" target="_blank" >QK1910320: Výzkum postupů šlechtění dojeného skotu s cílem zvýšit odolnost k nemocem využitím genomických plemenných hodnot, rozvoje systému sběru zdravotních dat a cílené genotypizace skotu</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

2020

Kód důvěrnosti údajů

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