Relative expression of mRNA of interferon-stimulated gene 17 (ISG17) in pregnant and non-pregnant Aardi goats at 1, 7, 15, 23, 35, and 60 days post natural mating (NM), blood samples were collected from Aardi goats, (means ± SEM), *denotes significant difference (P<0.01) between pregnant and non-pregnant goats, (n=32).