Comments on: Why in 5 weeks old piglets respiratory disease due to PRRSV appears despite vaccination of sows with a MLV PRRS vaccine every 4 months, and which have high level of antibodies?

Comments on: Why in 5 weeks old piglets respiratory disease due to PRRSV appears despite vaccination of sows with a MLV PRRS vaccine every 4 months, and which have high level of antibodies? https://prrscontrol.com/why-in-5-weeks-old-piglets-respiratory-disease-due-to-prrsv-appears-despite-vaccination-of-sows-with-a-mlv-prrs-vaccine-every-4-months-and-which-have-high-level-of-antibodies/ Mon, 21 Oct 2019 13:08:39 +0000 hourly 1