ASF: can flies transmit the virus to pigs?
Enric Marco comments on the practical implications of a recent article investigating the transmission of ASF through ingestion of flies.
Clinical case: Sudden rise in returns to oestrus
A farrow-to-finish farm went from 10% to 50% of returns to oestrus, and almost 90% of them were regular.
Clinical case: Tail biting in a pig farm with non-docked pigs
The average mortality increased by 2.5% due to the animals that presented with myelitis and ascending infections along the spine. Find out how the problem could be solved without returning to tail docking.
Achieving Day 0 for Mycoplasma hyopneumoniae: What is it? Why should it be done?
Establishing Day 0 is a crucial step in disease control and elimination programs and should be carefully performed by swine health professionals.
Clinical case: Respiratory distress and ill-thrift in post-weaned pigs
There is an increase of respiratory distress and loss of body condition with an increase of mortality in the weaning and growing pigs…
Clinical case: ...and trouble arrived with them
Changes on the source of replacement animals are always difficult decisions. Monitoring through testing before the introduction of the new animals into the farm is not sufficient.
What happens when M. hyopneumoniae enters a herd? Assessment of natural infection in gilts
Some of the take-home messages of this article are: M. hyo transmits slowly within exposed populations, but pigs can shed for long periods of time.
Is PEDv spread via semen?
Enric Marco comments on the practical implications of a recent research article about PEDv excretion in semen.
Exploring the benefits of PCV-2 blanket vaccination in sows
The average piglet birth weight from the 3 groups of vaccinated sows was statistically higher than that from the unvaccinated sows.
Clinical case: Problems underlying App outbreak in a startup farm in China
Modern startup farms may have less pressure of respiratory diseases infection in winter as they usually have good ventilation design. However, the clinical case described here is an App outbreak in a startup farm with modernized ventilation design.
Clinical case: Acute mortality by nitrite intoxication
Nitrite poisoning does still occur in modern pig facilities, even more with the presence of the biological air treatment.
Susceptibility to Mycoplasma hyorhinis depending on age
Enric Marco discusses a trial that concludes that the later the infection by M. hyorhinis occurs, the less serious it is. This information can be very useful to devise new control strategies in the era of antibiotic reduction.
Clinical case: Thrombocytopaenic purpura
The farmer contacted the veterinary surgeon concerning an increase of subcutaneous haemorrhages and bruises in the skin of several piglets in eight different litters. No deaths have yet been attributed to the problem.
Clinical case: Poorly adapted piglets in a liquid system nursery
Weaning is a critical event in the pig’s life. It is a very important and stressful transition that, if not handled properly, can be responsible for the occurrence of diarrhoea and/or poorly adapted piglets.
The microbiome and viral infections
This article relates different microbiome profiles to greater or lesser severity in clinical signs, lesions and viral load in a co-infection with PRRS and PCV2 viruses, opening a window of opportunity.
Clinical case: The possible ways of App spreading and stopping
Once the first symptoms of the infection emerged in pigs the facility was locked and the possibility to get in from outside was the only used.
Clinical case: Eradication of PEDv in a 4500-sow commercial farm in Peru
This article shows the different measures taken and the strategy followed to eradicate PEDv in a commercial farm: stabilization, creation of a disinfection bubble, monitoring and verification.
Biosecurity measures to prevent indirect transmission of PEDV
This article helps us to define the minimum biosecurity measures that should be internally established to prevent indirect PEDv transmission.
Global molecular genetic analysis of PCV2
The current diagnostic tests are very powerful, allowing us to detect even small changes in the genome of a virus, but what do they tell us?
Clinical case: Importance of mycotoxins control for pig health: diarrhea, edema disease and E. coli vaccination failure in weaners
We were called for clinical problems on weaners that appeared a few days after a feed transition in a farrow-to-finish farm: swelling of the eyelids and forehead, incoordination, dyspnea and sudden death.
Clinical case: Diffuse reproductive problems in high health conditions
The owner contacted us because he has seen a reduction in performance in recent months, although no decline has been identified in any particular parameter. He says that, overall, “the sows are doing worse".
Land altitude, slope, and coverage as risk factors for PRRS outbreaks in the USA
Does the land altitude, slope or coverage matter?
Biosecurity status and its associations with production and management characteristics in farrow-to-finish pig herds
The farms that apply more vaccines are the ones that score the best in internal biosecurity. The change towards prevention directly leads to both greater use of vaccines and better internal biosecurity, as they are the only means we know to prevent the disease.
The impact of intensive vaccination on PCV2 epidemiology
The decrease in PCV2a and PCV2b genotypes over time and the increase in PCV2d in 2012 may be due more to other, unknown, factors than to immunological selection resulting from PCV2a-based vaccination.
Clinical case: Multifactorial respiratory process at nursery and finisher
This case report highlights the importance of a comprehensive approach to achieve a correct differential diagnosis.
Clinical case: Bowel Oedema
This case study describes an outbreak in a commercial unit which proved difficult to stop without vaccine. Since 2014 an increasing number of cases of this disease have been reported in Europe though it remains unclear why it has reappeared.
Clinical case: Abattoir lesion prevalence in light and heavy weaned pigs
The prevalence of Mycoplasmal pneumonia and pericarditis lesions was significantly higher in pigs weaned at lower weights compared to their heavier cohorts, despite the provision of a superior production system for the lower weight group.
Clinical case: Increase of returns in summer and low annual prolificacy
The farm reports a problem of low prolificacy (mean annual live births of 11.91) and low fertility in summer, with a marked increase in acyclic returns.
Infectious agents identified in aborted porcine foetuses
PCV-2 and PRRS are the most common infectious causes of abortions. Most abortions are also found to occur during the colder months, regardless of their cause.
The impact of 6 years of PCV2 vaccination on viral presence and immunity in pigs across the United States
PCV2 vaccination is nearly universal. Has viral presence decreased after 6 years of vaccination? Could vaccination policies be changed?
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