What does a positive ELISA test result for PRRS tells us?
Antibodies measured by the ELISA test are not correlated with protection and only allow us to conclude if an animal has had previous exposure to PRRSV. It cannot be distinguished if those antibodies are directed against field virus or modified live virus from a vaccine. These tests also do not allow the differentiation between maternally derived antibodies and antibodies actively produced by a piglet.
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? 56% correct
23-Oct-2019 The United States inventory of all hogs and pigs on September 1, 2019. 36% correct
16-Oct-2019 Do the needs of amino acids increase during inflammatory processes? 40% correct
Random questions
19-Aug-2014 What is the role of the compensations to the farmers in the case of ASF outbreaks? 29% correct
04-Apr-2018 In reference to PRRS sequencing: 42% correct
08-May-2024 Which of the following properties do silver nanoparticles have? 60% correct
07-Jun-2023 Which is a natural antioxidant used in preserving raw materials, fats, and oils? 77% correct
Easy questions
22-Jan-2025 Which necrospy finding is characteristic of hemorrhagic enteritis? 81% correct
09-Nov-2022 Which membrane filtration process can concentrate salts? 81% correct
28-Sep-2022 Which of these hormonal changes occurs before the sow farrows? 85% correct
10-Apr-2024 What is the first step of performing a necropsy of a piglet in lateral decubitus? 75% correct
Difficult questions
13-Nov-2024 Which country consumes the most pork in Europe? 27% correct
16-Sep-2015 How many different PEDv serotypes are known? 28% correct
23-Sep-2014 What is the weaned piglets' feeding pattern? 26% correct
17-Aug-2017 How could it be quantitatively assessed the intestinal health of post-weaned piglets? 24% correct