Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 63993
Title Prediction of rates of inbreeding in populations selected on Best Linear Unbiased Prediction of breeding value
Author(s) Bijma, P.; Woolliams, J.A.
Source Genetics 156 (2000). - ISSN 0016-6731 - p. 361 - 373.
Department(s) Animal Breeding and Genetics
Publication type Refereed Article in a scientific journal
Publication year 2000
Abstract Predictions for the rate of inbreeding (F) in populations with discrete generations undergoing selection on best linear unbiased prediction (BLUP) of breeding value were developed. Predictions were based on the concept of long-term genetic contributions using a recently established relationship between expected contributions and rates of inbreeding and a known procedure for predicting expected contributions. Expected contributions of individuals were predicted using a linear model, ui(x) = ßsi, where si denotes the selective advantage as a deviation from the contemporaries, which was the sum of the breeding values of the individual and the breeding values of its mates. The accuracy of predictions was evaluated for a wide range of population and genetic parameters. Accurate predictions were obtained for populations of 5–20 sires. For 20–80 sires, systematic underprediction of on average 11 as found, which was shown to be related to the goodness of fit of the linear model. Using simulation, it was shown that a quadratic model would give accurate predictions for those schemes. Furthermore, it was shown that, contrary to random selection, F less than halved when the number of parents was doubled and that in specific cases F may increase with the number of dams.
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