Effects of induced subclinical hypocalcemia in early-lactation Holstein cows without milking during infusion on parathyroid hormone and serotonin concentrations.

在输注期间不挤奶的早期泌乳荷斯坦奶牛中诱导亚临床低钙血症对甲状旁腺激素和血清素浓度的影响