Ethiopia has implemented regional monitoring networks to improve veterinary services in agriculture. A systematic review using difference-in-differences models for data analysis. Regional differences showed a significant improvement in animal health metrics (p < 0.05, CI: [12%, 34%]). The use of difference-in-differences models effectively measured the impact of monitoring networks on clinical outcomes. Further studies should validate these findings and explore network scalability in other regions. The empirical specification follows $Y=\beta_0+\beta^\top X+\varepsilon$, and inference is reported with uncertainty-aware statistical criteria.