| Autor: |
Juan Carlos Illera, Francisco Jimenez-Blanco, Luis Centenera, Fernando Gil-Cabrera, Belen Crespo, Paula Rocio Lopez, Gema Silvan, Sara Caceres |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Veterinary Sciences, Vol 11, Iss 4, p 182 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2306-7381 |
| DOI: |
10.3390/vetsci11040182 |
| Popis: |
The fighting bull is characterised by its natural aggressiveness, but the physiological mechanisms that underlie its aggressive behaviour are poorly studied. This study determines the hormonal component of aggressiveness in fighting bulls by analysing their behaviour during a fight and correlating it to their serotonin, dopamine and testosterone levels. We also determine whether aggressive behaviour can be estimated in calves. Using 195 animals, samples were obtained when the animals were calves and after 5 years. Aggressiveness scores were obtained by an observational method during bullfights, and serotonin, dopamine and testosterone levels were determined in all animals using validated enzyme immunoassay kits. The results revealed a strong correlation of serotonin and dopamine levels with aggressiveness scores in bulls during fights, but no correlation was found with respect to testosterone. These correlations led to established cut-off point and linear regression curves to obtain expected aggressiveness scores for calves at shoeing. There were no significant differences between the expected scores obtained in calves and the observed scores in bulls. Therefore, this study demonstrates that hormone determination in calves may be a great indicator of combativeness in bulls and can reliably be used in the selection of fighting bulls. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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