Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs

Abstract Background Efforts to enhance animal welfare have led to the investigation of alternative methods of performing surgical castration on young pigs that induce stress and anxiety. This study was conducted to establish the efficacy of immunocastration in heavy pigs, with non-invasive diagnosti...

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Main Authors: E. Atallah, G. Pesenti Rossi, J. F. Soares Filipe, E. Dalla Costa, S. M. Mazzola, M. Minero, A. Pecile, A. Motta, S. Barbieri
Format: Article
Language:English
Published: BMC 2025-04-01
Series:BMC Veterinary Research
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Online Access:https://doi.org/10.1186/s12917-025-04708-w
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author E. Atallah
G. Pesenti Rossi
J. F. Soares Filipe
E. Dalla Costa
S. M. Mazzola
M. Minero
A. Pecile
A. Motta
S. Barbieri
author_facet E. Atallah
G. Pesenti Rossi
J. F. Soares Filipe
E. Dalla Costa
S. M. Mazzola
M. Minero
A. Pecile
A. Motta
S. Barbieri
author_sort E. Atallah
collection DOAJ
description Abstract Background Efforts to enhance animal welfare have led to the investigation of alternative methods of performing surgical castration on young pigs that induce stress and anxiety. This study was conducted to establish the efficacy of immunocastration in heavy pigs, with non-invasive diagnostic indicators being salivary cortisol and testosterone levels. Results At 225 days, a significant difference was noted in the cortisol levels of pigs in the treatment groups, with the immune-castrated (IC) recording higher levels than the surgically castrated (SC) animals. Furthermore, 196-day and 225-day-old IC pigs had remarkably elevated testosterone amounts. The changes that were seen to be significant after immunocastration indicate that the use of salivary tests can be a good way of evaluating how effective this alternative method is. Among SC pigs, a significant positive relationship was found between salivary cortisol and salivary testosterone concentrations at 225, 240, and 268 days. Moreover, no association was observed in IC animals. These findings signal that the hormonal levels and their interactions are related to different physiological reactions of pigs to immunological and surgical castration. Conclusions The results underline the significance of salivary cortisol and testosterone as stress and hormonal balance indicators in heavy pigs with immunocastration. This study provides insights into the complex hormonal reactions to stress post-castration and emphasizes the need for further research to enhance animal welfare practices. Overall, salivary testing offers a practical approach to evaluating immunocastration efficacy and monitoring pig health and well-being.
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spelling doaj-art-8fe5a742c2944feda6aae97ff6ea35262025-08-20T02:28:05ZengBMCBMC Veterinary Research1746-61482025-04-012111810.1186/s12917-025-04708-wAssessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigsE. Atallah0G. Pesenti Rossi1J. F. Soares Filipe2E. Dalla Costa3S. M. Mazzola4M. Minero5A. Pecile6A. Motta7S. Barbieri8Dipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoCentro Ricerche Produzioni AnimaliDipartimento di Medicina Veterinaria e Scienze Animali, Università degli Studi di MilanoAbstract Background Efforts to enhance animal welfare have led to the investigation of alternative methods of performing surgical castration on young pigs that induce stress and anxiety. This study was conducted to establish the efficacy of immunocastration in heavy pigs, with non-invasive diagnostic indicators being salivary cortisol and testosterone levels. Results At 225 days, a significant difference was noted in the cortisol levels of pigs in the treatment groups, with the immune-castrated (IC) recording higher levels than the surgically castrated (SC) animals. Furthermore, 196-day and 225-day-old IC pigs had remarkably elevated testosterone amounts. The changes that were seen to be significant after immunocastration indicate that the use of salivary tests can be a good way of evaluating how effective this alternative method is. Among SC pigs, a significant positive relationship was found between salivary cortisol and salivary testosterone concentrations at 225, 240, and 268 days. Moreover, no association was observed in IC animals. These findings signal that the hormonal levels and their interactions are related to different physiological reactions of pigs to immunological and surgical castration. Conclusions The results underline the significance of salivary cortisol and testosterone as stress and hormonal balance indicators in heavy pigs with immunocastration. This study provides insights into the complex hormonal reactions to stress post-castration and emphasizes the need for further research to enhance animal welfare practices. Overall, salivary testing offers a practical approach to evaluating immunocastration efficacy and monitoring pig health and well-being.https://doi.org/10.1186/s12917-025-04708-wAnimal welfareImmunocastrationHeavy pigSalivary testosteroneSalivary cortisolEnzyme-linked immunosorbent assay (ELISA)
spellingShingle E. Atallah
G. Pesenti Rossi
J. F. Soares Filipe
E. Dalla Costa
S. M. Mazzola
M. Minero
A. Pecile
A. Motta
S. Barbieri
Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
BMC Veterinary Research
Animal welfare
Immunocastration
Heavy pig
Salivary testosterone
Salivary cortisol
Enzyme-linked immunosorbent assay (ELISA)
title Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
title_full Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
title_fullStr Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
title_full_unstemmed Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
title_short Assessing salivary cortisol and testosterone as non-invasive biomarkers for GnRH-immunocastration efficiency in heavy pigs
title_sort assessing salivary cortisol and testosterone as non invasive biomarkers for gnrh immunocastration efficiency in heavy pigs
topic Animal welfare
Immunocastration
Heavy pig
Salivary testosterone
Salivary cortisol
Enzyme-linked immunosorbent assay (ELISA)
url https://doi.org/10.1186/s12917-025-04708-w
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