From: Serology for Neosporosis, Q fever and Brucellosis to assess the cause of abortion in two dairy cattle herds in Ecuador
Cows that aborted and age
Control cows and age
Farm 1 Nt = 93
n = 56, 35 ± 6 months
n = 37, 32 ± 7 months
Farm 2 Nt = 79
n = 39, 65 ± 27 months
n = 40, 72 ± 33 months
Nt = 172
n = 95
N = 77