Prediction of Reproductive Success in Multiparous First Service Dairy Cows by Parameters from In-Line Sensors

The aim of the current study was to evaluate relationship different parameters from an automatic milking system (AMS) with pregnancy status multiparous cows at first service and assess accuracy such a follow-up regard blood parameters. Before insemination cows, samples for measuring biochemical indices were taken coccygeal vessels concentrations serum albumin (ALB), cortisol, non-esterified fatty acids (NEFA) activities aspartate aminotransferase (AST) gamma glutamyltransferase (GGT) determined. From oestrus day seven days after oestrus, following registered: milk yield (MY), electric conductivity, lactate dehydrogenase (LDH) β-hydroxybutyric acid (BHB). evaluated using ultrasound “Easy scan” 30–35 insemination. Cows grouped by reproductive status: PG− (non-pregnant; n = 48) PG+ (pregnant; 44). BHB level in 1.2 times higher (p < 0.005). electrical conductivity statistically significantly all quarters (1.07 times) than 0.05). arithmetic mean GGT 1.61 NEFA value 1.23 0.05) compared group. liver function affected, average ALB 1.19 lower AST activity 1.16 cows. non-pregnant group had negative energy balance demonstrated high in-line concentrations. We found greater number cortisol >0.0.75 mg/dL A pointed towards risk mastitis while together indicated that more affected oxidative stress.