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Iranian Journal of Microbiology، جلد ۸، شماره ۱، صفحات ۴۷-۵۴
عنوان فارسی
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عنوان انگلیسی Study on mycoflora of poultry feed ingredients and finished feed in Iran
چکیده انگلیسی مقاله Background and Objectives: Unhygienic poultry feedstuffs can lead to nutrient losses and detrimental effect on poultry production and public health. In the present study, mycobiota and colony-forming units per gram in ingredients and finish poultry feed was evaluated with special reference to potentially mycotoxigenic fungi. Materials and Methods: Eighty five samples of corn, soybean meal and poultry finished feed were collected from nine poultry feed factories located in three provinces i.e. Tehran, Alborz and Qom in Iran from October 2014 to January 2015. Samples were cultured on Sabouraud dextrose agar (SDA), Aspergillus flavus and parasiticus agar (AFPA) and dichloran rosebengal chloramphenicol agar (DRBC) and incubated at 28 ºC for 7-10 days. Purified fungal colonies were identified by a combination of macro- and microscopic morphological criteria. For determining the rate of fungal contamination, samples were cultured on SDA and colony forming units (CFUs) were calculated. Results: A total of 384 fungal isolates belonging to 7 genera of filamentous fungi and yeasts were obtained from corn (124 isolates), soybean meal (92 isolates), and feed before (72 isolates), and after pelleting (96 isolates). The most prominent fungal isolate in corn, soybean meal and feed before pelleting (feed as mash form) was Fusarium but in feed after pelleting was Aspergillus . Among 5 Aspergillus species isolated, potentially aflatoxigenic A. flavus isolates was predominant in corn (46.6%), soybean meal (72.7%) and poultry finished feed (75%). CFUs results indicated that 9/22 corn samples (40.9%), none of 22 soybean meal samples, 19/41 finished feed (46.3%) were contaminated higher than the standard limit. Conclusions: Our results indicated that corn, soybean meal and finished feed of poultry feed mill are contaminated with various fungal genera by different levels sometimes higher that the standard limits. Contamination with potentially myco- toxigenic fungi especially Aspergillus species may be considered as a human public health hazard.
کلیدواژه‌های انگلیسی مقاله Mycoflora,Aspergillus,Poultry feed,Mycotoxigenic fungi
نویسندگان مقاله seyedsoheil قایم مقامی | seyedsoheil ghaemmaghami
department of animal and poultry health amp;amp; nutrition, faculty of veterinary medicine, university of tehran, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

مهرداد modirsaneii | mehrdad modirsaneii
department of animal and poultry health amp;amp; nutrition, faculty of veterinary medicine, university of tehran, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

علیرضا خسروی | alireza khosravi
department of mycology, faculty of veterinary medicine, university of tehran, tehran, iran.

سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

مهدی رزاقی ابیانه | mehdi razzaghi abyaneh
department of mycology, pasteur institute of iran, tehran 1316943551, iran and microbiology research center, pasteur institute of iran, tehran 1316943551, iran.

سازمان اصلی تایید شده: انستیتو پاستور ایران (Pasteur institute of iran)

نشانی اینترنتی http://ijm.tums.ac.ir/index.php/ijm/article/view/122
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