Academic Journal
Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
| العنوان: | Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls |
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| المؤلفون: | Bolado-Sarabia, José L., Pérez-Linares, Cristina, Figueroa-Saavedra, Fernando, Tamayo-Sosa, Alma R., Barreras-Serrano, Alberto, Sánchez-López, Eduardo, García-Reynoso, Issa C., Ríos-Rincón, Francisco G., Rodríguez-Poché, Mabel Y., García-Vega, Luis A., Gallegos, Esteban, Castro-Osuna, Priscila |
| المصدر: | Austral Journal of Veterinary Sciences; Vol. 50 No. 2 (2018); 75-81 ; Austral Journal of Veterinary Sciences; Vol. 50 Núm. 2 (2018); 75-81 ; 0719-8132 ; 0719-8000 |
| بيانات النشر: | Faculty of Veterinary Sciences - Universidad Austral de Chile |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | immunocastration, Holstein bulls, testosterone |
| الوصف: | o evaluate the effect thatimmunocastrationhas on behaviour, testosterone and cortisol levels of feedlot Holstein bulls, 720 intact animals aged between 7 and 8 months, weighing 232±1.19 kg were randomly assigned to two treatments:immunocastrationusing the Bopriva vaccine and a placebo (360 animals per treatment). The bulls were slaughtered at day 239 of treatment. Animals were vaccinated on days 1, 21, 101, and 181, and on those same days testosterone levels were measured; while cortisol, glucose andcreatinkinase measurements were done on day 181 and duringexanguinationat slaughter. Sexual, aggressive and social behaviours were evaluated and it was found that intact bulls showed a higher average ofhead butts, mounting, threats, flehmen sign and sniffing (P<0.05), no differences were found for vocalisations, lowering of the head and grooming (P>0.05). Testosterone levels in intact bulls remained at 0.47ng/mL throughout the study, however, by day 181 differences (P<0.05) were observed in immunised bulls, with values of 0.22ng/mL. At slaughter, testosterone levels were 0.21 ± 0.06 ng/mL inimmunocastratedbulls and 0.54 ± 0.06 ng/mL in the placebo group. The use ofimmunocastrationwith Bopriva has shown to be effective to reduce testosterone, sexual and aggressive behaviours on Holstein bulls. ; To evaluate the effect that immunocastration has on behaviour, testosterone and cortisol levels of feedlot Holstein bulls, 720 intact animals aged between 7 and 8 months, weighing 232±1.19 kg were randomly assigned to two treatments: immunocastration using the Bopriva vaccine and a placebo (360 animals per treatment). The bulls were slaughtered at day 239 of treatment. Animals were vaccinated on days 1, 21, 101, and 181, and on those same days testosterone levels were measured; while cortisol, glucose and creatin kinase measurements were done on day 181 and during exanguination at slaughter. Sexual, aggressive and social behaviours were evaluated and it was found that intact bulls showed a higher average of head ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://revistas.uach.cl/index.php/australjvs/article/view/1800/2398; http://revistas.uach.cl/index.php/australjvs/article/view/1800 |
| DOI: | 10.4067/S0719-81322018000200077 |
| الاتاحة: | http://revistas.uach.cl/index.php/australjvs/article/view/1800 https://doi.org/10.4067/S0719-81322018000200077 |
| Rights: | Derechos de autor 2018 Austral Journal of Veterinary Sciences |
| رقم الانضمام: | edsbas.7814C270 |
| قاعدة البيانات: | BASE |
| DOI: | 10.4067/S0719-81322018000200077 |
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