Figure 3From: Cardiovascular, endocrine and behavioural responses to suckling and permanent separation in goatsPlasma concentrations of cortisol and β-endorphin during suckling (Study 2). Means (± SEM) of plasma concentrations of cortisol and β-endorphin before, during, and after suckling in seven goats. Blood samples were taken at 10.00 h and 10.30 h and on the same day as the suckling experiment, and then at suckling (S), and at 5, 15 and 30 minutes after suckling. * = P ≤ 0.05 and *** = P ≤ 0.001 indicates significant differences compared to the first sample (10.00 h).Back to article page