Table 2 Daytime (10:00–15:00) and nighttime (22:00–03:00) plasma melatonin concentrations (least square means ± s.e.m.) in gilts from different litters.
From: Plasma Melatonin Levels in Relation to the Light-Dark Cycle and Parental Background in Domestic Pigs
Litter 1 (n = 4) | Litter 2 (n = 2) | Litter 3 (n = 4) | Litter 4 (n = 3) | Litter 5 (n = 2) | |
|---|---|---|---|---|---|
Melatonin (pg/ml) | |||||
Day | 2.6a ± 2.7 | 1.9a ± 3.8 | 0.6a ± 2.7 | 0.9a ± 3.1 | 2.5a ± 3.8 |
Night | 23.2a ± 2.7 | 8.7b ± 3.8 | 6.4b ± 2.7 | 10.3b ± 0.9 | 15.0ab ± 3.8 |