Аграрный вестник Урала № 12 (130) 2014Животноводство
SPREAD OF MYCOTOXINS IN FORAGE PLANTS AND SILAGE
The mycotoxins (aflatoxins, ochratoxin, deoxynivalenol, zearalenone, T-2 toxin and fumonisin) in forage plants (46 samples) from the farms of Leningradskaya oblast and silage (71 samples) from the farms of Leningradskaya, Yaroslavskaya oblast and Krasnodarskiy region were analyzed. Studies on the analysis of the accumulation of mycotoxins in feed plant material and finished silo were conducted in the laboratory of Ltd. “BIOTROPH” in 2014 for the experiment were selected following forage crops: a mixture of red clover and timothy grass, orchard grass, alfalfa, triticale, winter grain mixture and triticale, a mixture of perennial legumes and perennial grasses. Analysis of the accumulation of mycotoxins in feed plant material and silage showed that mycotoxins already were occurred in forage plants as result of fungal attacks during the growing season and later in the silages if conditions were suitable for mold growth. In the mature silage contents of ochratoxin and zearalenone increased compared with forage plants, aflatoxin and T-toxin — remains unchanged, DON — reduced. It was established that the excess of the maximum limit of mycotoxins content was detected in 100 % analyzed forage plants and silage samples. For work piece quality silage should take bilateral action: impact on reducing the «field» of fungi on the growth stage of the plant, including applying the system of crop rotation, as well as influence on the reduction of mycotoxins during storage, using preservative agents with potent antifungal activity
mycotoxins, forage plants, silage, maximum limit of mycotoxins content
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