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Bulletin No. 19 - Fall 2004
Parasitology- No Category
CLARK P, BILKEI G
Production losses due to ascarid infestation of outdoor maintained pigs [Durch Spulwurmbefall bedingte Produktionseinbussen in der Freilandhaltung der Schweine]
Tieraerztliche Umschau 58 ( 8 ): p 425-431 1 August, 2003
The objective of this study was to examine the effects of ascarid infection in pigs raised outdoors. The study was conducted in a large Croatian pig breeding unit which comprised both indoor and outdoor production systems. Two hundred and seventy piglets were randomly assigned to one of three equally sized groups of (90) pigs. Group 1 comprised indoor reared pigs which remained untreated, Group 2 comprised outdoor piglets which remained untreated and Group 3 comprised outdoor reared pigs which were treated with Ivermectin intramuscularly at a dose of 0.3 mg/kg bodyweight on days 10, 30 and 50. The variables examined were: birth weight, slaughter weight at 60 days of age, average daily weight gain, eosinophil and white cell count at slaughter, bronchoalveolar lavage fluid (BLF), total cell count and white cell differential count at slaughter, lactate dehydrogenase (LDH) concentration in BLF at slaughter, liver pathology, pulmonary histopathological changes and procoagulant activity (PCA) in BALF. Pigs in Group 3 had statistically significant higher average daily weight gains, significantly reduced white blood cell counts, blood and BALF eosinophilia, MS, LDH and PCA than the animals in Group 2. The animals in Group 1 remained free of ascaris infestation.
