Table 1.
A descriptive summary of each relevant study included in the meta-analysis (n = 9) for daily milk yield and total milk yield.
| Reference | Country | Study population (breed/ sample size) | Temperament indicator |
*Comparison groups | Outcome parameter |
|---|---|---|---|---|---|
| Praxedes et al. (2009) | Brazil | Zebu (Gyr)/ 2.507 | Other | Group 1 Group 2 Group 3 |
Total milk yield |
| Orbán et al. (2011) | Hungry | Holstein Friesian/ 69 Jersey/ 283 |
Crush score (reactivity in score in the squeeze chute) | Group 1 Group 2 Group 3 |
Daily milk yield |
| Sutherland and Huddart (2012) | New Zealand | Holstein Friesian/ 40 | Flight speed (in m/s) | Group 1 Group 2 Group 3 |
Daily milk yield |
| Sutherland et al. (2012) | New Zealand | Holstein Friesian/ 30 | Flight speed (in m/s) | Group 1 Group 2 Group 3 |
Daily milk yield |
| Gergovska et al. (2014) | Bulgaria | Black and White/ 143 | Reactivity in scores in the milking parlor | Group 1 Group 2 Group 3 |
Daily milk yield |
| Neja et al. (2015) | Poland | Holstein Friesian/ 11.629 | Reactivity in scores in the milking parlor | Group 1 Group 2 Group 3 |
Daily milk yield/ Total milk yield |
| Neja et al. (2017) | Poland | Holstein Friesian/ 158 | Reactivity in scores in the milking parlor | Group 1 Group 2 Group 3 |
Daily milk yield |
| Marçal-Pedroza et al. (2020) | Brazil | Zebu-crosses (Girolando)/ 31 | Reactivity in scores in the milking parlor/ Steps or kicks/ FSK1 (or MOV)/ Entrance time/ Crush score/ Flight speed/ Flight distance/ Novel object test | Group 1 Group 2 Group 3 |
Daily milk yield |
| Sawa et al. (2017) | Poland | Holstein Friesian/ 12.028 | Reactivity in scores in the milking parlor | Group 1 Group 2 Group 3 |
Daily milk yield/ Total milk yield |
* Comparison groups between temperament types, with group 1: low vs. inter; group 2: low vs. high; group 3: inter vs. high. 1FSK or MOV: Score based on the performance of flinching, stepping, and kicking or sum of the number of kicks and steps during milking.