Abstract
Genotype and protein level interaction in growth traits of meat-type quail through reaction norm models
Highlights
The term meat-type quail (Coturnix coturnix coturnix) is often used to differentiate from the term Japanese quail (Coturnix coturnix japonica) describing species widely used for egg production (Silva et al, 2013)
In poultry breeding, understanding the genetics of traits that are affected by environmental change is important, as this will allow to assess the adaptive potential of these traits (Gienapp et al, 2017)
One possible strategy to optimize breeding programmes might be selecting animals for their genetic performance over different protein levels (PL) in the diet. This strategy can be performed through the regression of the genetic values in function of PL. This characterizes genotype and environment interaction (G×E), in which gradual environmental changes are represented by the respective PL
Summary
The term meat-type quail (Coturnix coturnix coturnix) is often used to differentiate from the term Japanese quail (Coturnix coturnix japonica) describing species widely used for egg production (Silva et al, 2013). Regardless the quail production approach (meat or egg), these animals are an economic animal model for breeding research (Alkan et al, 2010) due to the small body size (a large number of birds can be kept in a limited space) and short generation interval. One possible strategy to optimize breeding programmes might be selecting animals for their genetic performance over different protein levels (PL) in the diet. This strategy can be performed through the regression of the genetic values in function of PL. This characterizes genotype and environment interaction (G×E), in which gradual environmental changes are represented by the respective PL
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