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Effect Of Parentage Misidentification On Estimates Of Genetic Parameters For Milk Yield In The Mediterranean Italian Buffalo Population, Emanuela Parlato, L. Dale Van Vleck
Effect Of Parentage Misidentification On Estimates Of Genetic Parameters For Milk Yield In The Mediterranean Italian Buffalo Population, Emanuela Parlato, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
The objective of this study was to evaluate the effect of parentage misidentification on estimation of genetic parameters for the Italian buffalo population for milk yield from 45,194 lactation records of 23,104 Italian buffalo cows. Animals were grouped into 10 data sets in which sires and dams were DNA identified, or reported from the pedigree, or unknown. A derivativefree restricted maximum likelihood method was used to estimate components of variance with a repeatability model. The model contained age at calving nested within parity and days from calving to conception as linear covariates, herd-year-seasons as fixed effects, and additive genetic, permanent …