Investigations on the mycological quality of feeds from Transylvanian farms are presented. The investigations had two objectives: 1. survey for mycological contamination and related chemical composition; 2. the evaluation of effects ofFusarium graminearum Schw. infested wheat (8% in the diet) on productivity and digestibility of nutrients in broilers. More than 50% of the samples showed water contents exceeding 16%, due to inadequate harvesting and storage conditions. This correlated with high my-cological contamination, with dominant species of the genusFusarium, Aspergillus, Alternaria,Penicillium andRhizopus. Feeding trials with broilers showed that live weight gain and digestibility coefficients of protein and fat in animals givenFusarium infested grain were depressed. As well N-retention and feed conversion rate (kg feeding stuff/ kg weight gain) were impaired.

70 corn samples for feed use out of the harvests of the years 2001 and 2002 were collected randomly in Transylvania, Romania and analysed for zearalenone and for ergosterol as fungal mass indicator. High ergosterol contents were found in some samples with a maximum value of 72 mg/kg, zearalenone contents showed values between 4 and 2250 µg/kg in samples positive, indicating a rather high degree of fungal contamination as well as a serious zearalenone contamination.

Biowaste are a permanent subject of concern for environmental integrity and maintenance and human and animal health, due to their very high organic load and potential risk of pathogenic contamination. The paper presents briefly the process of anaerobic digestion as a treatment possibility for hygenisation and organic matter decomposition of biowaste (liquid manure and agro-industrial waste) with production of the energy rich biogas and of the digestion products which can be use as fertilizer. There are presented the hygienisation possibilities of the liquid manure and waste from agro-industry and the EU regulations to be considered at biogas plants construction and approval.

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