Vaccines and Vaccination Practices: Key to Sustainable Animal Production

The Immunological Basis for Vaccination

Vaccination is crucial for health protection of poultry and therefore important to maintaining high production standards. Proper vaccination requires knowledge of the key players of the well-orchestrated immune system of birds, their interdependence and delicate regulation, and, subsequently, possible modes of stimulation through vaccine antigens and adjuvants. The knowledge about the innate and acquired immune systems of birds has increased significantly during the recent years but open questions remain and have to be elucidated further. Despite similarities between avian and mammalian species in their composition of immune cells and modes of activation, important differences exist, including differences in the innate, but also humoral and cell-mediated immunity with respect to, for example, signaling transduction pathways, antigen presentation, and cell repertoires. For a successful vaccination strategy in birds it always has to be considered that genotype and age of the birds at the time point of immunization as well as their microbiota composition may have an impact and may drive the immune reactions into different directions. Recent achievements in the understanding of the concept of trained immunity will contribute to the advancement of current vaccine types helping to improve protection beyond the specificity of an antigen-driven immune response. The fast developments in new omics technologies will provide insights into protective B- and T-cell epitopes involved in cross-protection, which subsequently will lead to the improvement of vaccine efficacy in poultry.

Evaluation of livestock farmers' knowledge, attitudes and practices regarding the use of veterinary vaccines in Southwest Ethiopia

BACKGROUND

The utilization of veterinary vaccines plays a vital role in preventing and managing animal diseases. However, the success of vaccination programmes relies on livestock farmers' understanding, perspectives and behaviours regarding their application. Therefore, this study aims to evaluate the knowledge, attitudes and practices of livestock farmers in Southwest Ethiopia regarding the use of veterinary vaccines.

METHODS

The study followed a cross-sectional design conducted between October 2021 and October 2022. A sample of 476 livestock-owning farmers, including those who raise dairy cattle, beef cattle and poultry, were interviewed from the districts of Shei Bench, Semen Bench, Sheko and Yeki.

RESULTS

The findings revealed that participants from Sheko, who had a poultry farm, were college graduates and resided in an urban area, were more likely to have good knowledge of veterinary vaccines. Similarly, participants who were male, from Semen Bench, had a poultry farm and had a high school education, exhibited a positive attitude towards veterinary vaccines. Furthermore, being male, from Semen Bench, having a poultry farm, and having a high school education were associated with increased veterinary vaccine use.

CONCLUSION

This study highlights the importance of addressing gender differences and tailoring interventions based on geography and farming conditions in the area. These measures are crucial to improve practices related to veterinary vaccines for enhanced animal health and productivity. Prioritizing education, veterinary services and information dissemination is vital. However, further research and targeted interventions are needed to better comprehend underlying factors and implement effective strategies for diverse communities in different areas.