Early castration in foals: Consequences on physical and behavioural development.


Journal

Equine veterinary journal
ISSN: 2042-3306
Titre abrégé: Equine Vet J
Pays: United States
ID NLM: 0173320

Informations de publication

Date de publication:
Mar 2023
Historique:
received: 09 07 2021
accepted: 07 04 2022
pubmed: 29 4 2022
medline: 9 2 2023
entrez: 28 4 2022
Statut: ppublish

Résumé

The impact of very early castration of foals has not yet been studied despite the many positive effects observed in dogs and cats. The objective of the study was to compare castration at 3 days and 18 months and assess their subsequent morphological and behavioural development. This was a randomised, blinded clinical study. Twenty-two Welsh ponies underwent either early (3-day old, EC group, n = 11) or traditional (18-month old, TC group, n = 11) castration. Animals were followed up to 3 years of age. All ponies were castrated using a primary closure technique under general anaesthesia. Weight and morphometric measurements were monitored monthly from birth until 8 months of age in both groups. Then, measurements were taken every 3 months until 2 years of age and then every 6 months until 3 years of age. Temperament tests were performed on all animals when they were 1- and 3-years old. No differences were observed between the EC and TC groups in terms of physical development from birth until 40 months of age or in terms of temperament and behaviour at either 1 or 3 years of age. The study included only one breed (Welsh ponies) and only 22 animals that were castrated before 2 years of age, precluding comparison with castration performed at older ages. We demonstrate that early castration at 3 days does not interfere with morphological or behavioural development.

Sections du résumé

BACKGROUND BACKGROUND
The impact of very early castration of foals has not yet been studied despite the many positive effects observed in dogs and cats.
OBJECTIVES OBJECTIVE
The objective of the study was to compare castration at 3 days and 18 months and assess their subsequent morphological and behavioural development.
STUDY DESIGN METHODS
This was a randomised, blinded clinical study.
METHODS METHODS
Twenty-two Welsh ponies underwent either early (3-day old, EC group, n = 11) or traditional (18-month old, TC group, n = 11) castration. Animals were followed up to 3 years of age. All ponies were castrated using a primary closure technique under general anaesthesia. Weight and morphometric measurements were monitored monthly from birth until 8 months of age in both groups. Then, measurements were taken every 3 months until 2 years of age and then every 6 months until 3 years of age. Temperament tests were performed on all animals when they were 1- and 3-years old.
RESULTS RESULTS
No differences were observed between the EC and TC groups in terms of physical development from birth until 40 months of age or in terms of temperament and behaviour at either 1 or 3 years of age.
MAIN LIMITATIONS CONCLUSIONS
The study included only one breed (Welsh ponies) and only 22 animals that were castrated before 2 years of age, precluding comparison with castration performed at older ages.
CONCLUSIONS CONCLUSIONS
We demonstrate that early castration at 3 days does not interfere with morphological or behavioural development.

Identifiants

pubmed: 35478462
doi: 10.1111/evj.13580
doi:

Types de publication

Randomized Controlled Trial, Veterinary Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

214-221

Subventions

Organisme : IFCE
ID : 75000097

Informations de copyright

© 2022 EVJ Ltd.

Références

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Auteurs

Juliette Cognie (J)

Physiologie de la reproduction et des comportements (PRC) - UMR85, CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France.

Sandrine Freret (S)

Physiologie de la reproduction et des comportements (PRC) - UMR85, CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France.

Lea Lansade (L)

Physiologie de la reproduction et des comportements (PRC) - UMR85, CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France.

Celine Parias (C)

Physiologie de la reproduction et des comportements (PRC) - UMR85, CNRS, IFCE, INRAE, Université de Tours, PRC, Nouzilly, France.

Philippe Barriere (P)

Physiologie Animale (PAO) - UE1297, INRAE, PAO, Nouzilly, France.

Amandine Gesbert (A)

Physiologie Animale (PAO) - UE1297, INRAE, PAO, Nouzilly, France.

Fabrice Reigner (F)

Physiologie Animale (PAO) - UE1297, INRAE, PAO, Nouzilly, France.

Stefan Deleuze (S)

Faculté de Médecine vétérinaire, Département Clinique des Equidés, Université de Liège, Liège, Belgium.

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