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    • Cortisol and β-endorphin levels in peripheral circulation around weaning in primiparous sows 

      Tsuma, VT; Einarsson, s; Madej, A; Undeheim, N (Department of Obstetrics and Gynaecology, Swedish Univesity of Agricultural Sciences, Uppsala, 1994)
      Peripheral plasma patterns of cortisol and β-endorphin were compared around weaning in primiparous sows. Blood samples for hormone analysis were collected repeatedly on the day before weaning, on the day of weaning and on ...