The Guilty Gilt Guide was written with a clear objective – to maximize the whole-herd performance of pig populations by helping gilts to reach their full reproductive potential and produce healthy pigs that reach their full genetic potential during grow-finish.
The open reading frames (ORF)5 represents approximately 4% of the porcine repro- ductive and respiratory syndrome virus (PRRSV)-2 genome (whole-PRRSV) and is often determined by the Sanger technique, which rarely detects >1 PRRSV strain if present in the sample.
Porcine reproductive and respiratory syndrome virus (PRRSV) is an important swine pathogen affecting the global swine industry.
Mycoplasma hyopneumoniae (M. hyopneumoniae) infections continue to result in significant respiratory challenges in the swine industry worldwide. Vaccination for M. hyopneumoniae is commonly utilized, as reduction in bacterial loads and clinical severity in vaccinated pigs have been shown. However, the effect of M. hyopneumoniae vaccination on transmission across different pig populations has been minimally investigated.
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Different PRRS vaccination protocols for sow herds in the Netherlands are used. Off all PRRSV MLV vaccinating sow herds roughly 40% uses whole herd mass vaccination (vaccination of all breeding stock 3-4 times a year) and 50% using a batch vaccination program (vaccination of breeding stock per batch in specific phases in the production cycle) (Hokdierscan; 2016). The main arguments not to use mass vaccination protocols are suspected productivity effects due to vaccination during critical phases of the sows’ reproductive cycle. In this study we compare production results in sow herds after PRRS type 1 MLV mass vaccination to the baseline production.
The aim of the study was to calculate the time to PRRSv-stability (TTS), the time-to-baseline-production (TTBP) and total losses in a European context.
Porcine Reproductive and Respiratory Syndrome (PRRS) costs in Europe are estimated between 100€ and 200€ per sow per year and 5€ to10€ per pig. Porcine circovirus 2 (PCV-2) epidemiology has changed due to the widespread of vaccination. In this context, the stability of non-vaccinated sow populations can be challenged leading to the production of PCV-2 viremic piglets, as shown in unstable farms, and increasing the infectious pressure in the offspring.