Calculation of economic values for turkey breeding using a production model

This paper describes the development of an economic model and the use of that model to calculate economic values for vertically integrated turkey production in North America. The nature of vertically integrated production required an objective that was balanced across parent stock (egg production, fertility and hatchability), commercial production (bodyweight, feed intake, and mortality) and processing (yield traits). Feed intake, bodyweight and breast meat yield had large economic weights relative to other traits reflecting the importance of feed costs and breast meat as the major revenue source. Less important traits in the breeding objective were mortality, processing plant condemnations and the reproductive traits. Level of production was important when considering the reproductive traits, and as egg production decreased, the economic value of the reproductive traits rose substantially

A bio-economic model for use in the turkey breeding, commercial growout and processing sectors.

A bioeconomic model of turkey production was developed to determine economic values on which to base pure-line breeding decisions. The initial objective was to simulate production in an integrated turkey breeding operation involving poult breeding, commercial rearing and processing segments. It was developed to be flexible enough to allow economic evaluation within each production sector for non-integrated producers. The model is driven by embedded Gompertz-based growth and feed intake parameters with defined commercial slaughter weight being used to calculated slaughter age and feed intake. It can also be used to evaluate breed selection and management decisions, such as optimizing parent stock selection and slaughter weight, to either maximize profit within a sector or to maximize the gross margin of an integrated enterprise

The genetic and phenotypic relationship between feed efficiency and pendulous crop in the turkey (Meleagris gallopavo)

This study used multiple-trait linear animal models to calculate the heritability, phenotypic and genetic correlations between pendulous crops (PCs), feed efficiency and body weight traits. Estimates for heritability were 0.15 and 0.11 for PCs in sire and dam lines, respectively. Genetic and phenotypic correlations in the dam line were close to zero between PCs and feed efficiency traits. Feed efficiency traits had low to moderate genetic correlations with PC in the sire line. Genetic correlations between PCs, feed intake and residual feed intake were -0.23 and -0.22, respectively. The correlations between PCs and feed efficiency traits show that PC should be included in the selection index whenever a feed efficiency trait is also included

Molecular cloning and characterization of the active human mitochondrial NADH : Ubiquinone oxidoreductase 24-kDa gene (NDUFV2) and its pseudogene

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