Immunization

Reports on immunization findings from University of Hohenheim provide new insights

Published in Vaccine Weekly, September 26th, 2007

According to recent research published in the journal Vaccine, "Immunization of boars against GnRH inhibits synthesis of testicular steroids including androstenone (sex odour). Timing of the second vaccination (anamnestic reaction) should occur as late as possible to maintain anabolic effects of testicular hormones, but early enough to remove androstenone from body fat."

"Five catheterized boars received the second dose (Improvac (R)) at age 22 weeks. Titre, hormones and parameters reflecting protein turnover were determined in blood. An increased antibody titre and drop of LH and steroids occurred within 5 days. Metabolism adapted after 7 days. Results from this...

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Source: Vaccine Weekly (2007-09-26)

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