[OBS (oily birds syndrome). A mycotoxicological and chemical study in avian feed]

English. The aim research was to evaluate, by means of analytical essays, the acidic composition of fat obtained from chickens affected by OBS, and a possible presence of mycotoxins and parasitics in avian feed samples and in products used for the formulation. Results showed that Aflatoxin, Ocratoxin, and Zearalenone were absent in 52 samples analyzed. Antiparasitics residues, especially Malathion, were founded in 26 of 52 samples taken into account and their amount was lower in comparison to that requested by the law in force. Cadmium, mercury and arsenic values were absent in corn, soybean and wheat samples, that are the main components of chicken's pellets analyzed. Further investigations will be performed in attempt to study aminoacidc and lipidic composition of feeds. Microflora of OBS chicken's skin will be also studied

Italian. Sono state effettuate indagini analitiche atte ad evidenziare la composizione acidica del grasso del pollo affetto da OBS e l'eventuale presenza di micotossine e antiparassitari in campioni di mangimi avicoli e di prodotti utilizzati per la loro formulazione. Le indagini hanno messo in evidenza l'assenza di Aflatossine, Ocratossine, Zearalenone nei 52 campioni analizzati. Residui di antiparassitari, principalmente di Malathion, sono stati riscontrati in 26 dei 52 campioni analizzati; la loro quantita' risulta comunque inferiore ai valori previsti dalle norme vigenti. Cadmio, mercurio e arsenico sono risultati assenti nei campioni di mais, soia, frumento, componenti principali dei mangimi avicoli indagati. Le indagini proseguiranno con lo studio della composizione amminoacidica e lipidica dei mangimi