Abstract
ABSTRACT The objective of this research was to study the effect of immunocastration on the morphometric characteristics of sex glands in male Swallow-bellied Mangalitsa pigs. The study included 24 animals (13 entire and 11 immunocastrated males). The research focused on the following traits: age at slaughter (days), live weight at slaughter (kg), growth rate (kg day−1), and morphometric testicle traits (volume, cm3; weight, g; length, width, thickness, and circumference, mm). The efficacy of immunocastration was determined based on androstenone and [...]
Highlights
In view of the voluntary end of piglet castration in the European Union, interest in research on immunocastration, as an alternative to surgical castration of male pigs, has increased
The present study is the first to demonstrate that immunocastration could be a method of choice for castration of the local fatty pig breed, Mangulica (Swallow-bellied Mangalitsa)
Immunocastration by vaccination immunologically blocks the signal from gonadotropin-releasing hormone (GnRH), decreasing the secretion of luteinising hormone (LH), follicle-stimulating hormone (FSH), and testicular steroids (Čandek-Potokar et al, 2017)
Summary
In view of the voluntary end of piglet castration in the European Union, interest in research on immunocastration, as an alternative to surgical castration of male pigs, has increased. Levels of substances responsible for boar taint (androstenone and skatole) are reduced. Effect of immunocastration on sex glands of male Mangulica (Swallow-bellied Mangalitsa) pigs 2. Immunocastration results in regression of testes and accessory sex glands compared with entire males (Batorek et al, 2012a), with early immunisation provoking more substantial reductions (Brunius, 2011). Research results using computed tomography suggested that the volume ratio between testes and body of entire males is a good parameter to assess the effectiveness of immunocastration (Font-i-Furnols et al, 2016). Other studies (Bonneau, 2010; Čandek-Potokar et al, 2014) suggested that the weight of accessory sex glands, in particular the seminal vesicle, is a more reliable indicator for the on-line assessment of effective immunocastration
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