Table 1.
Effects of bromocriptine and nano-bromocriptine on pause days and egg production percent of late laying hens.
| Parameter | Pause Days (Day) | Egg/Hen/D (%) | |||||
|---|---|---|---|---|---|---|---|
| 76th Week | 80th Week | 84th Week | 76th Week | 80th Week | 84th Week | ||
| Treatment | Control (n = 50) | 11.07 ± 0.26 a | 10.00 ± 0.25 a | 11.56 ± 0.34 a | 61.42 ± 0.95 c | 61.90 ± 0.78 c | 51.16 ± 1.42 b |
| Bromocriptine (n = 50) | 7.05 ± 0.32 b | 6.89 ± 0.28 b | 8.20 ± 0.35 b | 71.55 ± 1.25 b | 71.11 ± 1.01 b | 65.54 ± 1.71 a | |
| Nano-bromocriptine (n = 50) | 5.38 ± 0.33 c | 5.93 ± 0.26 c | 7.27 ± 0.30 c | 78.33 ± 1.26 a | 74.54 ± 1.16 a | 68.13 ± 1.45 a | |
| Administration | Orally (n = 75) | 7.14 ± 0.39 b | 7.15 ± 0.32 b | 8.94 ± 0.36 | 73.37 ± 1.26 a | 71.04 ± 1.12 a | 62.41 ± 1.62 a |
| Injection (n = 75) | 8.52 ± 0.32 a | 8.06 ± 0.24 a | 9.08 ± 0.31 | 67.49 ± 1.04 b | 67.33 ± 0.78 b | 60.82 ± 1.44 a | |
| Treatment χ administration |
Control (oral, n = 25) | 11.11 ± 0.37 a | 10.07 ± 0.37 a | 11.50 ± 0.48 a | 61.15 ± 1.34 d | 61.56 ± 1.12 c | 51.65 ± 1.99 c |
| Control (injection, n = 25) | 11.04 ± 0.38 a | 9.93 ± 0.35 a | 11.63 ± 0.48 a | 61.69 ± 1.37 d | 62.25 ± 1.09 c | 50.67 ± 2.05 c | |
| Bromocriptine (oral, n = 25) | 6.39 ± 0.37 c | 6.11 ± 0.44 c | 8.86 ± 0.53 b | 74.71 ± 1.50 b | 72.75 ± 1.81 b | 63.04 ± 2.62 b | |
| Bromocriptine (injection, n = 25) |
7.71 ± 0.49 b | 7.68 ± 0.28 b | 7.54 ± 0.42 c,d | 68.39 ± 1.87 c | 69.46 ± 0.84 b | 68.05 ± 2.12 a,b | |
| Nano-bromocriptine (oral, n = 25) |
3.93 ± 0.35 d | 5.29 ± 0.35 c | 6.46 ± 0.44 d | 84.26 ± 1.28 a | 78.80 ± 1.34 a | 72.52 ± 1.92 a | |
| Nano-bromocriptine (injection, n = 25) |
6.82 ± 0.41 c | 6.57 ± 0.36 c | 8.07 ± 0.34 b,c | 72.40 ± 1.58 b,c | 70.29 ± 1.55 b | 63.75 ± 1.78 b | |
| p-value | Treatment | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 | <0.0001 |
| Administration | <0.0001 | <0.0026 | <0.7091 | <0.0001 | <0.0007 | <0.3572 | |
| Interaction | <0.0014 | <0.0425 | <0.0062 | <0.0003 | <0.0032 | <0.0052 | |
Values are presented as least square mean ± SE. a–d Means within the same column for each parameter with different superscripts are statistically different at p < 0.05 (Two-way ANOVA, Tukey post-hoc test).