SUSCEPTIBILITY AND PALATABILITY OF SOME EGYPTIAN RODENTS TO ZINC PHOSPHIDE

Document Type : Original Article

Author

Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.

Abstract

Toxicity studies of zinc phosphide (Zn3 P2) on some Egyptian rodents showed that in both choice and no - choice tests, the tested an­imals could be a rranged in a descending order of susceptibility to zinc phosphide at 1% concetration as follows Mus musurfus > Arvicanthis niloticus > Rattus rattus > Rattus norvegicus . In choice test, palatability had a negative correlation with the concentration . The palatabilty per­centages at 1 % zinc phosphide were 45.5 %, 39.3%, 38.5% and 31.4% for M. Musculus, rattus, A. nrloticus and R. norvegicus, respectively . The mean of death length in choice test was slightly longer than in no-choice test for the different examined animals . Among the three zinc phosphide concentrations tested ( 1% , 2% and 3%), the poison bait of 1% gave satisfactory mortality under laboratory conditions.