[The effect of adding dried swine manure to the diet of laying hens on the quality of their meat].

Two groups of laying hens (eight hens in each group) were given dried pig faeces at a concentration of 2.5% and 5% for six months and at a concentration of 5% and 10% for another five months. No signs of health disorders ascribable to the tested diet were found by the premortal examination of the hens and post-mortal veterinary inspection of the carcasses and organs of the slaughtered birds. Some differences in meat and fat composition were observed between the test and control birds, apparently without any association with the diet. Hence the addition of pig faeces to hen diet can be regarded as safe in view of hen meat quality.