Bernau Maren, Schwanitz Sebastian, Kreuzer Lena Sophie, Scholz Armin Manfred
Livestock Center Oberschleissheim, Veterinary Faculty of the Ludwig-Maximilians-University Munich, St. Hubertusstrasse 12, 85764 Oberschleissheim, Germany.
Hochschule für Wirtschaft und Umwelt Nürtingen-Geislingen, Fakultät Agrarwirtschaft, Volkswirtschaft und Management, Neckarsteige 6-10, 72622 Nürtingen, Germany.
Animals (Basel). 2021 Mar 31;11(4):968. doi: 10.3390/ani11040968.
This study aimed at evaluating the local tissue reaction of an anti-GnRF product, which is used for the so called "immunocastration" in male pigs. A total of 34 pigs were injected two times (including a booster injection) with an anti-GnRF product. Injection was performed using the prescribed safety vaccinator. Injection sites were evaluated three times post injection using magnetic resonance imaging. Two examinations were performed after the first injection and one after the booster. The local tissue reaction was evaluated three-dimensionally by semi-automatic analyses, by linear measurements of injection depth and length, and by scoring the kind of tissue affected. Results showed a long-lasting reaction in affected muscle tissue. Therefore, needle length should be discussed, and an evaluation of the injection site after slaughter should be performed include behavioural scorings post injection to evaluate the impact on animal well-being and carcass quality.
本研究旨在评估一种用于雄性猪所谓“免疫去势”的抗促性腺激素释放因子（GnRF）产品的局部组织反应。总共34头猪分两次（包括一次加强注射）注射了抗GnRF产品。使用规定的安全注射器进行注射。注射后使用磁共振成像对注射部位进行了三次评估。第一次注射后进行了两次检查，加强注射后进行了一次检查。通过半自动分析对局部组织反应进行三维评估，通过线性测量注射深度和长度，并对受影响的组织类型进行评分。结果显示受影响的肌肉组织有持久反应。因此，应讨论针头长度，并且在屠宰后应对注射部位进行评估，包括注射后的行为评分，以评估对动物福利和胴体质量的影响。
