The Number of Daughter-Dam Pairs Needed for Estimating Heritability
نویسندگان
چکیده
منابع مشابه
Comparison of heritability estimates from daughter on dam regression with three models to account for production level of dam.
Three models were used to estimate heritabilities for milk yields at different production levels and for different years as twice the regression of daughter residual effects on dam residual effects. The denominator is the residual mean square for dams. The numerator is the difference between the residual term for sum of dam's and daughter's records and sum of residual terms for records of dams ...
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Heritability estimated by year of freshening for firstqactation milk records of artificially sired Holstein cows in the northeastern United States from daughter on dam regression averaged about .34 on the linear scale and .31 on the logarithmic scale. Little change could be detected from 1965 to 1982. Number of daughterdam pairs was 197,338. Heritability estimates on the .5 and .4 power scales ...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 1960
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas1960.193916x