Primiparous cows had more P/AI than multiparous cows 33 and 63 d after insemination, but the treatment by parity interaction was not significant.
A tendency for a treatment by parity interaction was observed for milk yield due to PA increasing milk yield in multiparous but not in primiparous cows.
A season by parity interaction showed that primiparous cows that calved during the warm season had lower AOR of PM than during the cool season (0.24; 95% CI = 0.09 to 0.62), whereas multiparous cows did not have seasonal effects on PM (1.43; 95% CI = 0.65 to 3.18).
3. A parity-specific model including gene x parity interaction and the random permanent environmental effect.
The gene x parity interaction was even stronger when related to the number of days with mastitis.
A line by parity interaction was also observed for body weight, since body weight declined going from the third to the fourth parity in the LP line but not the V line.
The analysis of the effects of the TNF-α and LTF genes in relation to clinical mastitis showed strong associations between gene x parity interaction and MR, EM and DM of the disease.
We previously reported that maternal blood carboxyhemoglobin in early pregnancy was associated with preeclampsia risk among Omega participants, although only within the subgroup of women with prior live births (> 1% vs. 0.7% carboxyhemoglobin: adjusted OR = 4.1; 95% CI, 1.3 12.9; parity interaction p-value = 0.01) (Rudra et al. 2010a).
In both regions, the associations of parity and maternal age were stronger in the multivariate analysis, so an age-parity interaction term was included.
One can find energy levels and a number of atomic properties: g-factors, magnetic-dipole and electric-quadrupole hyperfine structure constants, electric- and magnetic-multipole transition amplitudes, and matrix elements of the parity nonconserving interactions.
