Enzootic pneumonia risk factors in fattening pigs
Any contact between fattening pigs of different age during restocking of compartments increased the risk.
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Any contact between fattening pigs of different age during restocking of compartments increased the risk.
Weaning triggers a series of changes leading to the decrease of feed intake and the deterioration of the intestinal architecture which finally results in infection, diarrhoea and low performance.
The first and the most important condition at the beginning of PRRSV control program is to disrupt virus circulation in the reproductive herd.
It seems we have a new virus able to produce vesicular disease in pig populations.
The immune status of farms is quite possibly different from the one they had before piglets mass vaccinations.
Due to the fact that no known enteropathogen was found in clinically relevant amounts, importance of massive Blastocystis sp. infestation was counted as significant in this case.
Despite not having a consistent post-vaccination serological reaction, vaccinated animals behave differently from unvaccinated animals under field conditions.The article explains why vaccines offer protection.
The economic evaluation of each assessment allows the producer to quantify the economic impact of pneumonia.
In practice, and to have active-acquired antibodies ready at weaning, piglets should be immunised 10 days to 2 weeks before weaning.
There are many open topics, such as: 1) what is the impact of the disease in endemic situations at the reproductive level (irregular return to estrus / fertility), especially in gilts; or 2) what is the productive impact in farrowing units, especially when we know that suckling piglets can play a role as a reservoir of the virus in an endemically infected farm.
Effect of modified-live porcine reproductive and respiratory syndrome virus vaccine on the shedding of wild-type virus from an infected population of growing pigs.
Infectious outbreaks can last for more than a month at a population level, which explain that a new batch including mainly susceptible piglets can get infected if the animals are housed in a separate room but in the same compartment (airborne transmission).
After two weeks of quarantine, gilts started limping. Treatment with amoxycillins did not help, only treatment with high doses (10 mg/kg) of macrolides and spectinomycines brought a solution.
An accurate diagnosis is sometimes difficult because of the common occurrence of mixed infections, the compounding effects of environment and nutrition and the difficulties experienced in isolating and identifying all the possible pathogenic agents involved.
After 24 years of experience we still don't have a control plan agreed upon and accepted by all our technical community. Why?
A gilt who has compromised limb health on entry to the breeding herd is more vulnerable to early removal as a result of lameness and more vulnerable to the negative production affects associated with it.