scholarly journals Ignoring genotype by environment interaction in the genetic evaluation of dairy cattle reduces accuracy but may increase selection intensity

2021 ◽  
Author(s):  
Margot Slagboom ◽  
A. Christian Sørensen ◽  
Jørn Rind Thomasen ◽  
Huiming Liu ◽  
Morten Kargo ◽  
...  
Keyword(s):  
Dairy Cattle ◽  
Genotype By Environment Interaction ◽  
Genetic Evaluation ◽  
Environment Interaction ◽  
Selection Intensity ◽  
Genotype By Environment

Genotype by environment interaction for milk, fat and protein yield in Holstein Friesian dairy cattle in Ireland

1998 ◽  
Vol 1998 ◽  
pp. 52-52 ◽  
Author(s):  
A. R Cromie ◽  
D.L Kelleher ◽  
F.J Gordon ◽  
M. Rath
Keyword(s):  
Dairy Cattle ◽  
Genetic Correlation ◽  
Milk Fat ◽  
Genotype By Environment Interaction ◽  
Protein Yield ◽  
Environment Interaction ◽  
Genotype By Environment ◽  
Holstein Friesian ◽  
The Difference ◽  
Made In

The existence of genotype by environment interaction (G*E) can cause a change in the ranking of bulls tested in one environment when their daughters are subsequently milked in another environment. If the degree of re-ranking is large, the genetic correlation between milk production in the two environments will be substantially less than 1.0, with the implication that proofs made in one environment may not be reliable predictors of proofs in the second environment. The aim of this study was to investigate the effect of increasing the difference between environments, defined on the basis of herd average milk yield, on the genetic correlation (rg) for milk, fat and protein yield in Holstein Friesian dairy cattle in Ireland.

Genotype by environment interaction for milk, fat and protein yield in Holstein Friesian dairy cattle in Ireland

1998 ◽  
Vol 1998 ◽  
pp. 52-52
Author(s):  
A. R Cromie ◽  
D.L Kelleher ◽  
F.J Gordon ◽  
M. Rath
Keyword(s):  
Dairy Cattle ◽  
Genetic Correlation ◽  
Milk Fat ◽  
Genotype By Environment Interaction ◽  
Protein Yield ◽  
Environment Interaction ◽  
Genotype By Environment ◽  
Holstein Friesian ◽  
The Difference ◽  
Made In

The existence of genotype by environment interaction (G*E) can cause a change in the ranking of bulls tested in one environment when their daughters are subsequently milked in another environment. If the degree of re-ranking is large, the genetic correlation between milk production in the two environments will be substantially less than 1.0, with the implication that proofs made in one environment may not be reliable predictors of proofs in the second environment. The aim of this study was to investigate the effect of increasing the difference between environments, defined on the basis of herd average milk yield, on the genetic correlation (rg) for milk, fat and protein yield in Holstein Friesian dairy cattle in Ireland.

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