父系
3.line of descent traced through both the maternal and paternal sides of the family.
6.Relating to, based on, or tracing ancestral descent through the paternal line.
7.On the basis of breeding new strains A、 B、 C and purely breeding Duroc、Yorkshire、 Landrace, selection and breeding of "Huate" best-hybridized combination werecarried out in 1991. Duroc is ideal sire breed, strain A 、 B and C would be dam line of sire line,sire line of dam line and darn line of dam line.
8.The order of effective numbers of alleles was D line (3.8214) > B line (3.3515) > C line (2.4866) > A line (2.4830). In whole population, the matrilineal genetic diversity was abundant, and the patrilineal population consistency was higher.
10.Qinchuan cattle had 25.8% Bos Indicus male origin and 74.2% Bos Taurus male origin.

