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Each week a new question about swine with the possibility of answering questions from previous weeks.

What does a positive ELISA test result for PRRS tells us?

It only allows us to determine if an animal has been previously exposed to the PRRS virus.
Looking at the resulting S/P value we can tell if the infection is from a field virus from a vaccine.
Looking at the resulting S/P value we can quantify the animal's level of protection.

See a clue in the article ¿Can the level of protection against PRRS be measured?

Questions

06-Nov-2019 Animal plasma, as an feed ingredient, is particularly rich in which amino acids? 40% correct

30-Oct-2019 How is affecting the rotation of semen doses during on farm conservation to its quality? 55% correct

23-Oct-2019 The United States inventory of all hogs and pigs on September 1, 2019. 35% correct

16-Oct-2019 Do the needs of amino acids increase during inflammatory processes? 41% correct

Random questions

28-May-2025 What percentage of sows in lactation follow a theoretically expected optimal feed intake pattern? 36% correct

29-Sep-2021 What share of Germany's meat production was pork in the first half of 2021? 46% correct

29-Apr-2015 The current PED cases in Asia and USA can be traced back to the outbreaks that appeared in Korea in 33% correct

05-Nov-2025 How many participated in the 333 Experience Congress LATAM 2025? 40% correct

Easy questions

10-Apr-2024 What is the first step of performing a necropsy of a piglet in lateral decubitus? 72% correct

16-Apr-2025 What are the possible effects of a sow having a low feed intake during lactation? 85% correct

09-Mar-2022 Which of the following describes antimicrobial susceptibility testing? 84% correct

14-Jul-2021 How can I use the "Raw materials statistics" section on 333? 81% correct

Difficult questions

19-Apr-2017 Which sentence is true about strains of livestock associated MRSA (LA-MRSA) 28% correct

16-Sep-2020 In the context of semen storage, what effect can plastics containing BADGE have? 26% correct

25-May-2016 Which of the following viruses has a lower ratio of transmission? 26% correct

18-Mar-2026 How did Spanish imports of live pigs evolve in 2025? 27% correct