3 research outputs found
Effect of chestnut tannins and short chain fatty acids as anti-microbials and as feeding supplements in broilers rearing and meat quality
Chestnut tannins (CT) and saturated short medium chain fatty acids (SMCFA) are valid alternatives to contrast the growth of pathogens in poultry rearing, representing a valid alternative to antibiotics. However, the effect of their blends has never been tested. Two blends of CT extract and Sn1-monoglycerides of SMCFA (SN1) were tested in vitro against the proliferation of Clostridium perfringens, Salmonella typhymurium, Escherichia coli, Campylobacter jejuni. The tested concentrations were: 3.0 g/kg of CT; 3.0 g/kg of SN1; 2.0 g/kg of CT and 1.0 g/kg of SN1; 1.0 g/kg of CT and 2.0 g/kg of SN1. Furthermore, their effect on broiler performances and meat quality was evaluated in vivo: one-hundred Ross 308 male birds were fed a basal diet with no supplement (control group) or supplemented with CT or SN1 or their blends at the same concentration used in the in vitro trial. The in vitro assay confirmed the effectiveness of the CT and SN1 mixtures in reducing the growth of the tested bacteria while the in vivo trial showed that broiler performances, animal welfare and meat quality were not negatively affected by the blends, which could be a promising alternative in replacing antibiotics in poultry production
Biomonitoring aquatic environmental quality in a marine protected area: A biomarker approach
Biomonitoring aquatic environmental quality in a marine protected area: a biomarker approach
The main aims of the present study, conducted in the
framework of the MONIQUA–Egadi Scientific Project,
were twofold: first, to make the first step in the development
and validation of an ecotoxicological approach for
the assessment of marine pollution in coastal environments
on the basis of a set of biomarker responses in new
sentinel species; and second, to obtain preliminary
information on environmental quality in an Italian marine
protected area, the Egadi Islands (Sicily). Several cytochrome
P450–dependent mixed-function oxidase activities
were measured in the following sentinel species:
rainbow wrasse Coris julis, gastropod limpet Patella
caerulea, and sea urchin Paracentrotus lividus. The
results suggest that specimens from the Favignana
Harbor may be exposed to P450 inducers, whereas most
of the other sites seem to share similar environmental
quality. The proposed approach has potential for assessment
of environmental quality in marine protected areas