Possible introgression of the VRTN mutation increasing vertebral number, carcass length and teat number from Chinese pigs into European pigs.

In the Landrace population, a tendency towards longer body length was found in ins/ins pigs compared to ins/del individuals, although the difference did not reach statistical significance ( P = 0.14), possibly due to a low frequency (7.8%) of the del allele in the population.

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