TABLE 1

Schedule of variable stress during gestation

Gestational dayTime of day
MorningNoonAfternoon
14Restraint: 60 minSwim: 15 min at room temperatureRestraint: 60 min
15Cold exposure (4°C): 6 h
16Swim: 15 minRestraint: 60 minSwim: 15 min
17Swim: 15 minLights on during dark phase
18Social stress: group housing: 12 h
19Restraint: 60 minSwim: 15 minRestraint: 60 min
20Cold exposure (4°C): 6 h
21Swim: 15 minRestraint: 60 minSwim: 15 min