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http://dx.doi.org/10.7744/cnujas.2014.41.1.041

Inbreeding levels and effective population size of duroc populations of major swine breeding farms in Korea  

Hong, Joon Ki (National Institute of Animal Science, R.D.A.)
Song, Na Rae (National Institute of Animal Science, R.D.A.)
Kim, Du Wan (National Institute of Animal Science, R.D.A.)
Kim, Si Dong (National Institute of Animal Science, R.D.A.)
Kim, Young Hwa (National Institute of Animal Science, R.D.A.)
Choi, Jae Gwan (National Institute of Animal Science, R.D.A.)
Mun, Hyo Sik (Korea Animal Improvement Association)
Cho, Kyu Ho (National Institute of Animal Science, R.D.A.)
Publication Information
Korean Journal of Agricultural Science / v.41, no.1, 2014 , pp. 41-46 More about this Journal
Abstract
The pedigree data of 86,639 heads from six major swine breeding farms were investigated to check levels of inbreeding and effective population size of breeding stocks. The average rate of inbreeding was 1.04%, 0.87%, 3.17%, 1.05%, 3.23% and 3.33% for farms A, B, C, D, E and F, respectively. The average inbreeding rate was highest for F farm and lowest for B farm. In farms D and E, there were quite large numbers of immigrant animals per generation compared to other farms. The effective population sizes calculated from the average rate of inbreeding were distributed between 83.0 and 814.8. Specific values were 282.3, 225.5, 83.0, 814.8, 302.9 and 175.7 for farms A, B, C, D, E and F, respectively. The results showed that there was no cause for concern over the current inbreeding level of major swine breeding farm populations and the inbreeding level was within an acceptable range. In addition, internal sharing rather than importing pig is necessary to strengthen seed sovereignty.
Keywords
Inbreeding; Inbreeding Coefficient; Swine; Pedigree Structure; Effective Population Size;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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