The study aimed to test a very early immunization of pigs to prevent boar taint with regard to its practicability and influence on production performance, its reliability in ensuring good meat and fat quality, and animal welfare. Immunization was already conducted at piglet production stage and could be easily integrated into routine vaccination (week 3) and weaning practices (week 7). The fattening and slaughter performance of the animals was not affected by the immunization regime and was within the usual range. In addition, there were no abnormalities in animal behavior and the prevalence of injuries caused by aggressive interactions. All animals were classified as infertile on the basis of the histological examination of the testicles. However, the testosterone levels measured at slaughter were significantly higher in animals of the early immunization regime than in animals subjected to the standard immunization regime. Androstenone and skatole levels as the main components of boar taint were, on average, higher and varied to a greater extent in early immunized animals. Furthermore, the comparison of the immunization scheme did not result in significant differences for meat quality and for fatty acid composition.

中文翻译：

---

猪的早期免疫铸造：从养殖到肉质

该研究旨在对猪进行早期免疫接种，以防止公猪异味，因为它的实用性和对生产性能的影响，确保良好肉和脂肪质量的可靠性以及动物福利。免疫已经在仔猪生产阶段进行，可以很容易地纳入常规疫苗接种（第3周）和断奶操作（第7周）。动物的育肥和屠宰性能不受免疫方案的影响，并且在通常范围内。此外，没有动物行为异常和侵略性互动造成的伤害盛行。根据睾丸的组织学检查将所有动物归为不育。然而，早期免疫方案的动物在屠宰时测得的睾丸激素水平显着高于标准免疫方案的动物。平均而言，雄激素异味素和粪臭素水平作为公猪异味的主要成分，在早期免疫的动物中平均较高，且变化较大。此外，免疫方案的比较没有导致肉品质和脂肪酸组成的显着差异。