a comparison of fertility indices between lfh ( 5 , 171 cows ) and nfh ( 14,573 cows ) revealed , in addition a higher overall conception rate and a lower percentage of cows still open on day 150 post partum ( problem cows , ( p < 0.0001 ) , as well as a higher pregnancy rate for nfh ( p < 0.001 ) , for cows with reproductive disorder and for normal cows in these herds .
C0009637
conception
C0035150
reproductive