Swine diseases transmissible with artificial insemination

Area of Science:

• Veterinary Medicine
• Animal Reproduction
• Disease Transmission

Background:

• Artificial insemination (AI) involves semen transport, posing a risk for disease transmission between farms.
• Semen can harbor bacterial contaminants, potentially causing infertility or disease outbreaks (e.g., Brucella suis).
• Viruses are a significant concern as they can survive in frozen semen, including pathogens like pseudorabies virus and African swine fever virus.

Purpose of the Study:

• To evaluate the risks of disease transmission associated with artificial insemination.
• To identify methods for minimizing pathogen contamination in semen used for AI.
• To compare the disease transmission risk of AI versus introducing new boars into a herd.

Main Methods:

• Review of potential bacterial and viral contaminants in fresh and frozen semen.
• Analysis of methods to reduce semen contamination, including sanitary collection, processing, and antibiotic use.
• Comparison of disease transmission risks between AI and natural service with new animals.

Main Results:

• Bacterial contamination can lead to infertility; specific pathogens like Brucella suis pose a severe outbreak risk.
• Antibiotics are effective in minimizing bacterial and mycoplasmal contamination in semen.
• Viruses detected in semen (e.g., pseudorabies, African swine fever) are a critical concern due to their survival in frozen semen.

Conclusions:

• AI offers a method for introducing new genetics with minimal disease transmission risk when proper precautions are taken.
• Sanitary collection, processing, and the judicious use of antibiotics are crucial for safe AI.
• The risk of disease transmission is generally lower with AI compared to introducing new boars directly into a herd.