Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls

Abstract: 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...

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Autores principales:	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
Lenguaje:	English
Publicado:	Universidad Austral de Chile. Facultad de Ciencias Veterinarias 2018
Materias:	immunocastration Holstein bulls testosterone
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322018000200077
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spelling	oai:scielo:S0719-813220180002000772018-05-23Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bullsBolado-Sarabia,José L.Pérez-Linares,CristinaFigueroa-Saavedra,FernandoTamayo-Sosa,Alma R.Barreras-Serrano,AlbertoSánchez-López,EduardoGarcía-Reynoso,Issa C.Ríos-Rincón,Francisco G.Rodríguez-Poché,Mabel Y.García-Vega,Luis A.Gallegos,EstebanCastro-Osuna,Priscila immunocastration Holstein bulls testosterone Abstract: 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 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 in immunocastrated bulls and 0.54 ± 0.06 ng/mL in the placebo group. The use of immunocastration with Bopriva has shown to be effective to reduce testosterone, sexual and aggressive behaviours on Holstein bulls.info:eu-repo/semantics/openAccessUniversidad Austral de Chile. Facultad de Ciencias VeterinariasAustral journal of veterinary sciences v.50 n.2 20182018-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322018000200077en10.4067/S0719-81322018000200077
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	immunocastration Holstein bulls testosterone
spellingShingle	immunocastration Holstein bulls testosterone 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 Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
description	Abstract: 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 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 in immunocastrated bulls and 0.54 ± 0.06 ng/mL in the placebo group. The use of immunocastration with Bopriva has shown to be effective to reduce testosterone, sexual and aggressive behaviours on Holstein bulls.
author	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
author_facet	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
author_sort	Bolado-Sarabia,José L.
title	Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
title_short	Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
title_full	Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
title_fullStr	Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
title_full_unstemmed	Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls
title_sort	effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of holstein bulls
publisher	Universidad Austral de Chile. Facultad de Ciencias Veterinarias
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322018000200077
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Effect of immunocastration on behaviour and blood parameters (cortisol and testosterone) of Holstein bulls

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