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Table 1 Birth year distribution of genotyped bulls (n = 3570)

From: Accuracies of genomic breeding values in American Angus beef cattle using K-means clustering for cross-validation

Birth year Number of bulls (n)
1955 to 1959 8
1960 to 1964 10
1965 to 1969 26
1970 to 1974 53
1975 to 1979 57
1980 to 1984 114
1985 to 1989 212
1990 to 1994 446
1995 to 1999 699
2000 to 2004 705
2005 to 2008 1240