ALTERATIONS INDUCED BY LOW LEVELS OF DEOXYNIVALENOL IN WEANED PIGLETS

DANIELA ELIZA MARIN, IONELIA TARANU, CRISTINA TABUC, G. STEFAN, ANCA DINISCHIOTU, GINA MANDA, GABRIELA DUMITRESCU

Abstract


Deoxynivalenol (DON) is a mycotoxin produced by different species of Fusarium genus that may contaminate feed and food. In the present study we investigated the effect of low levels of DON on the modulation of performance, hemodynamic parameters, cellular and humoral immune response in weaned pigs. Histological alterations in different organ tissues were also analyzed. Our results showed that a short in vivo exposure (14 days) of weanling piglets to 0; 0.5; 1.5 mg/day of DON significantly induced a dose dependent increase of cellular immune response (lymphocytes proliferation and leucocytes numbers). The 0.5 and 1.5 mg/day of DON modulated also the humoral immune response by increasing the immunoglobulin A synthesis with 7.32 % and 37.98 % and by decreasing that of immunoglubulin G with 11.15 % and 36.87 %, respectively when compared with the control. DON produced also alterations in the hemodynamic parameters of intoxicated piglets; the activity of lactate dehydrogenase significantly increased while the activity of L-glutamate, alkaline phosphatase, urea and creatinine significantly decreased. Both doses of the toxin induced microscopic alterations of the internal organ structure. By contrast, ingestion of the contaminated material had no effect on the performance (weight gain, feed consumption, and feed efficiency), organ weights, and total serum concentration of cholesterol, calcium, sodium and potassium. Taken together these results suggest that even when present at low level DON can affect blood parameters, humoral and cellular immune response in weaned piglets with a significant importance for the swine health.


Keywords


Fusarium; deoxynivalenol; weaned pig; immune response; biochemical parameters; histological modifications

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LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
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FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
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Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
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