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PRRS control on commercial farmThesaloniki, Greece
Waldemar Szczurek Poland
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Case study
• 700 sows herd farrow-finnish• 2 site production• genetics Danbred• feed production• AI and semen production
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Health status
• PRRS +• M. hyo +• Atrophic rhinitis +• APP +• Leptospira + • Lawsonia intracellularis +• PMWS in 2002
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Production results
• Farrowing rate 83-87%• Born total 14,8• Born alive 13-14 last 4 years• Weaners sold 19500 last year
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Epidemio-clinic description
• PRRS outbreak 1999• Abortions (mostly 104th day)• Weak piglets• Stillbirth• Irregular returns to estrus
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Diagnostic hypothesis
Typical PRRS outbreak serologicaly confirmed
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Preventive and curative recomendations
• Vaccines not available• Isolation of boars and regular checks of semen
and serum• Isolation of gilts before introduction into herd• Introduction of gilts after ca. 2 month post
delivery from fattening unit• Use of disposable needles for sows and piglets
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Interesting point
Since 1999 production is not affected by PRRS. Vaccines were never introduced into this herd. Serological tests were made every 3 month at the beginning, later twice a year, now sometimes.Biosecurity is a main concern.