Table 1.
Mean (±SEM) number of ethanol bouts, number of water bouts, and number of food bouts during phases 1–3
| Genotype | Session | ||||
|---|---|---|---|---|---|
| 1–4 | 5–8 | 9–12 | 13–16 | 17–20 | |
| Phase 1 | |||||
| Ethanol bouts | |||||
| KO | 2.0 (0.4) | 2.2 (0.7) | 2.3 (0.8) | 3.4 (1.2) | 3.9 (1.1) |
| WT | 4.1 (0.9) | 4.1 (1.3) | 5.0 (1.5) | 7.4 (1.9) | 8.0 (2.1) |
| Food bouts | |||||
| KO | 52.6 (2.8) | 43.0 (1.8) | 45.2 (1.6) | 45.3 (1.9) | 42.9 (1.3) |
| WT | 50.3 (1.6) | 48.1 (1.5) | 43.9 (1.9) | 49.0 (1.6) | 50.0 (1.5) |
| Water bouts | |||||
| KO | 41.2 (2.7) | 34.0 (2.2) | 35.5 (3.2) | 35.7 (4.4) | 34.9 (3.6) |
| WT | 36.1 (2.1) | 33.7 (1.5) | 33.7 (3.5) | 33.3 (2.7) | 31.0 (2.8) |
| Ethanol (% v/v) | |||||
|---|---|---|---|---|---|
| 0 | 5 | 10 | 20 | 30 | |
| Phase 2 | |||||
| Ethanol bouts | |||||
| KO | 2.4 (0.5) | 3.8 (1.1) | 4.1 (1.4) | 3.3 (1.0) | 3.8 (0.7) |
| WT | 3.8 (0.8) | 6.3 (1.9) | 7.7 (2.1) | 8.9 (1.6) | 7.7 (1.3) |
| Food bouts | |||||
| KO | 43.8 (2.9) | 43.2 (1.7) | 43.8 (2.2) | 43.5 (2.5) | 43.4 (1.0) |
| WT | 51.7 (2.2) | 51.8 (1.9) | 51.5 (2.7) | 50.5 (1.6) | 49.0 (1.9) |
| Water bouts | |||||
| KO | 37.3 (4.1) | 34.1 (3.8) | 33.5 (4.7) | 35.2 (3.5) | 35.5 (2.2) |
| WT | 40.2 (3.0) | 33.7 (2.4) | 32.8 (3.1) | 30.0 (2.8) | 35.2 (2.3) |
| Ethanol (% v/v) | ||||
|---|---|---|---|---|
| 0 | 5 | 10 | 20 | |
| Phase 3 | ||||
| Ethanol bouts | ||||
| KO | 15.4 (1.8) | 20.1 (2.0) | 19.9 (1.5) | 15.5 (1.6) |
| WT | 27.1 (4.1) | 31.8 (3.8) | 30.2 (4.4) | 24.0 (3.9) |
| Food bouts | ||||
| KO | 57.3 (1.8) | 46.8 (2.2) | 44.7 (2.6) | 42.0 (1.9) |
| WT | 62.3 (2.2) | 55.0 (1.1) | 53.8 (1.6) | 53.2 (2.2) |
| Water bouts | ||||
| KO | 34.3 (3.8) | 18.6 (3.2) | 16.9 (2.6) | 20.7 (2.8) |
| WT | 20.7 (4.5) | 12.2 (2.7) | 10.4 (2.6) | 18.1 (3.9) |