The experiments were conducted to study the effect of organic arsenic (Roxarsone)on the performance,tissue arsenic residue and tissue pathogenic change of meat strain ducks fed with diets supplemented with different levels(0,25,50 and 75 mg·kg -1 )of Roxarsone.

The experiment had three treatment groups that consisted of the basal diet, the 70 rag/kg of arsanilic acid and the 30 mg/kg of Roxarsone.

Toxic effects of roxarsone on Carassias auratus;

Simultaneous analysis of p-arsenilic acid and roxarsone in feed by liquid chromatography-hydrodide-atomic-flurescence spectrometry;

Studies on the residue and elimination of roxarsone in Carassius auratus;

Determination of roxarsone in chicken livers by high performance liquid chromatography;

Expression Profiling of Liver and Breast Muscle Displayed with DNA Microarray in Chicken Treated by Roxarsone;

Two representative pig farms in which roxarsone has been used were chosen to determine the total arsenic content in the earthworms and the soil around the piggery and measure the activity of several enzymes in the earthworms.

Under the optimal conditions,the calibration curves for arsanilic(ASA),nitarsone(NPAA)and roxarsone(ROX)were linear over the concentration ranges of 0-100 μg/L with the correlation coefficients range of 0.