MICROBIOLOGICAL SAFETY OF POULTRY FEED

Mikrobiološka ispravnost hrane za perad temeljni je preduvjet zdravlja i proizvodnosti u peradarstvu. Prisutnost različitih bakterija kao što su primjerice bakterije iz rodova Salmonella, Clostridium, E. coli i Staphylococcus te plijesni u hrani indirektno mogu predstavljaju problem i u javnom zdravstvu. Razlog tome su patogenost, toksikogenost, sposobnost prilagođavanja bakterija i plijesni na različite uvjete okoliša te različite mogućnosti širenja patogenih mikroorganizama. U peradarstvu, mikrobiološki neispravna hrana, pored štetnog u_inka na zdravlje životinja, uzrokuje i ekonomske gubitke u proizvodnji. U našem istraživanju ispitivali smo mikrobiološku ispravnost uzoraka kukuruza, gotovih smjesa i mesno koštanog brašna. Utvrđeno je 4,5% neispravnih uzoraka zbog prisutnosti bakterija iz rodova Salmonella i Clostridium. Ukupan broj bakterija koji je prelazio dozvoljeni maksimalni broj u hrani utvrđen je u 2,5% uzoraka. U 5,5% uzoraka utvrđen je ukupan broj kvasaca i plijesni koji je bio iznad dopuštene granice pri čemu su najčešće utvrđene plijesni pripadale rodovima Fusarium i Mucor. Usprkos pretraženom relativno malom broju uzoraka, utvrđeni rezultati ukazuju na pojavnost mikrobiološki neispravne hrane, što zahtijeva redovitu kontrolu uzoraka hrane.Microbiological safety of poultry feed is an essential prerequisite for poultry health and production. Presence of bacteria such as Salmonella, Clostridium, Staphylococcus and E. coli, as well as moulds in feed can indirectly become a problem in public health. This is due to ability of bacteria and moulds to survive in different environmental conditions using various possibilities of spread, their pathogeny and toxicity. In poultry production, microbiologically contaminated feed can in addition to its effects on animal health cause significant production losses. In our research, we microbiologically examined the samples of corn, feed, meat and bone meal. We detected 4,5% of samples microbiologically unsafe due to the presence of Salmonella and Clostridium species. The total bacteria counts exceeded the limits permitted by legislation in 2.5% of examined samples, while 5.5% of samples were unsafe due to the exceeded limit of yeasts and moulds (most frequently: Fusarium and Mucor species). In spite of a relatively small number of samples, our results indicated the incidence of microbiologically contaminated feed and the need for continuous control of feed samples