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Figure 1. IDEXX sample/negative control ratio (S/N). Test cut-off: S/N ≥0.6 = negative; S/N <0.6 = positive. Martinez et al. 2015.

NutritionArticle

If your nutritionist is not aware of the farm’s vaccination protocol… you may be losing an opportunity

Nutritional immunomodulation can be used for real-time adjustments to guide the immune system in protective directions.

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ManagementArticle

Tip: "Hands-free" needle-free vaccination

Needle-free vaccination has many advantages over conventional vaccination, but it is not as comfortable to do. This trick gives us a solution.

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NutritionArticle

Intestinal microbiota of pigs determines the response to vaccines

Bacteria in the gut microbiota that stimulate the immune response to vaccines in pigs also stimulate growth.

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Figure 2. S. suis s9 in oral cavity before and after weaning. S. suis serotype 9 load (average tonsillar and saliva swab) changes after weaning for 15 piglets from 3 different litters (allocated as different sow origin 3/pen at weaning).

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NutritionArticle

Streptococcus suis: is nutritional intervention possible?

Nutritional programs that manipulate the microbiota and mucosa towards the correct balance should be incorporated for the S. suis control program.

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Figure 1. It is important to read and follow the instructions indicated on the vaccine label.

HealthArticle

Vaccine myths and misconceptions

Answers to a series of frequently asked questions regarding vaccine usage and their interaction with the immune system.

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HealthArticle

Porcine parvovirus is changing: Implications

Pork producers and veterinarians need to be aware that the porcine parvovirus (PPV) has been evolving into new strains.

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HealthArticle

PCV-2d, PCV-2b, PCV-2a. How important are the differences between genotypes for veterinarians?

Serious problems occurred much less frequently with genotype a than with genotype b. Why did the frequency of these genotypes change?

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HealthArticle

PRRS - Why can't I achieve long-term stability on my farm?

Its high survivability in the environment, a long infective period, limited cross-protection, strains with different pathogenicity, and lateral infections make stabilization difficult.

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Figure 1. Generation and virulence evaluation of different gene-deleted African swine fever viruses (ASFVs). Schematic representation of the gene(s) and region(s) deleted in each gene-deleted ASFV. The deleted gene segments were replaced with the p72eGFP, eGFP, or p72mCherry reporter gene cassette as indicated. The virus-infected primary porcine alveolar macrophages expressing different fluorescence are shown on the right of the panel. Nucleotide positions indicating the boundaries of the deletion relative to the ASFV HLJ/18 genome are indicated.

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HealthArticle

What can we expect from the new ASF vaccine developed in China?

This vaccine looks promising, but... are we going to see it in Europe?

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HealthArticle

Acclimation strategies in gilts to control Mycoplasma hyopneumoniae: what strategies can we use?

Exposure methods: natural, intranasal, intra-tracheal, aerosol or vaccination.

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HealthArticle

Serotyping of Actinobacillus pleuropneumoniae field isolates by PCR

A newly produced PCR-based test can help assigning all known App serotypes, which can be used to select the most appropriate vaccine.

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Image 1. Nasal discharge + fever - Swine flu.

HealthArticle

Swine influenza: doubts about its control on the farm

The author presents a review of the current situation of influenza in pigs to end with his doubts and comments on the effectiveness of control measures on the farm.

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Fig 2. Effect of traditional and heterologous prime-boost vaccination regimens on the breadth of the anti-H3N2 antibody response. European and North American H3N2 SwIV strains are indicated by different flags. Sera collected 14 days after the second vaccination were tested against 15 antigenically distinct viruses including the vaccine strains. The numbers represent the number of viruses against which HI antibody titers were ≥ 40.

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HealthArticle

A different take on swine influenza vaccination

Influenza researchers are trying to stimulate antibody responses towards parts of the HA that are the least variable from strain to strain. One approach that seems promising is choosing two antigenically very different strains within the H1 or H3 subtype for the primary and subsequent booster vaccinations.

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HealthArticle

When will a vaccine against ASF be available?

Fernando Rodríguez, the director of CReSA, explains at what stage is the development of the vaccine against ASF.

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Photo 1. The gilt’s age on arrival determines the length of the available health acclimation period. Although as a rule of thumb, the longer the better, our experts determine that 8 weeks is the bare minimum time needed.

HealthArticle

Preparing the gilt: Health aspects

Joan Aparicio and Lluís Ferrer share their experience on how to prepare the replacement animals with Joan Wennberg.

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Figure 2. Use of quarantine in the 69 herds.

HealthArticle

Introduction of replacement gilts to PRRS-positive sow herds

A study was performed including 69 PRRS-positive sow herds with the aim of comparing the use of PRRSV MLV and quarantine facilities with the PRRSV status of replacement gilts at first insemination.