Natural feed ingredients (corn, barley and wheat bran) and compound feed (manufactured pellet) are two types of fodder used for animal feeding, especially camel in Saudi Arabia. Twenty samples of each type of fodder were collected from seven different regions and screened for the presence of fungi, aflatoxins, ochratoxin and zearalenone. Fungal isolation of natural feed ingredients yielded 10 genera and 38 species of different fungi. Compound fodder samples were contaminated with 16 genera and 32 species of fungi. Total counts of Aspergillus, Penicillium and Fusarium in the animal feed samples were ranged from 54 to 223 × 10(3), 31.9 to 60 × 10(3) and 18 to 29 × 10(3) CFU/g, respectively. These isolates when tested for aflatoxin, ochratoxin and zearalenone producing ability, revealed this property in only four isolate, identified as Aspergillus flavus, A. parasiticus, A. ochraceus and Fusarium graminaerum. The percentage of toxigenic fungi was ranged from 5.5% to 30% for natural feed ingredients and from 4.5% to 20% for compound feed. The incidence of aflatoxins (AFT) in samples of natural feed ingredients was found to be ranged from 1 to 24.8 ppb, ochratoxin A (OTA) ranged from 1 to 44 ppb and zearalenone (ZON) ranged from 1 to 23 ppb. Contamination of compound feed with aflatoxin and ochratoxin A was ranged from 1 to 6.4 ppb and 1 to 4.7 ppb, respectively. All samples collected were found contaminated with fungi or their toxins and natural feed samples were more contaminated compared to compound feed samples. The concentrations detected were in the allowed limit (<20 ppb) except four samples of natural feed ingredients which were above the allowed limit of the tested mycotoxins. In conclusion, feed samples were contaminated with fungi and some toxigenic isolates which were responsible about mycotoxin production. Some samples had exceeded amount of AFT, OTA and ZON and may be contaminated with other mycotoxins which mean implication of fungi in camel health problems and death in Saudi Arabia.

译文

:天然饲料成分(玉米,大麦和麦麸)和复合饲料(制成的颗粒)是用于动物饲料的两种饲料,特别是在沙特阿拉伯的骆驼。从七个不同地区收集了20种每种类型的饲料样品,并筛选了是否存在真菌,黄曲霉毒素、,曲霉毒素和玉米赤霉烯酮。天然饲料成分的真菌分离产生10属和38种不同的真菌。复合饲料样品被16属和32种真菌污染。动物饲料样品中曲霉菌,青霉菌和镰刀菌的总计数分别为54至223×10(3),31.9至60×10(3)和18至29×10(3)CFU / g。测试这些分离株的黄曲霉毒素,曲霉毒素和玉米赤霉烯酮的生产能力时,仅在四个分离株中发现了这一特性,这些分离株被鉴定为黄曲霉,寄生曲霉,och曲霉和革兰镰刀菌。对于天然饲料成分,产毒真菌的百分比范围为5.5%至30%,对于复合饲料,百分比为4.5%至20%。天然饲料成分样品中黄曲霉毒素(AFT)的发生范围为1至24.8 ppb,曲霉毒素A(OTA)的范围为1至44 ppb,而玉米赤霉烯酮(ZON)的范围为1至23 ppb。黄曲霉毒素和曲霉毒素A对复合饲料的污染分别为1到6.4 ppb和1到4.7 ppb。发现所有收集的样品均被真菌或其毒素污染,与天然饲料样品相比,天然饲料样品受到的污染更大。所检测到的浓度在允许的限值内(<20 ppb),但四份天然饲料成分样品的含量超出了测试的真菌毒素的允许限值。总之,饲料样品被真菌和某些产毒分离株污染,这与霉菌毒素的产生有关。一些样品的AFT,OTA和ZON含量超标,并可能被其他霉菌毒素污染,这意味着真菌对骆驼健康问题和沙特阿拉伯的死亡具有影响。

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