Prevalence Of Antibiotic Residues in Milk of Dairy Cattle in Khartoum stat

Abstract

A total of 236 milk samples were collected randomly from farms and sales points of Khartoum state during the period from August to September 2015 to investigate the prevalence of the antibiotic residues in dairy milk in Khartoum state. Delvotest ®SP-ampule kits was used as standard test to investigate the presence of the drug residues. The total positive result was found 50 samples at percentage of 21.18 % , as follows 10 samples ( 20 %) in Khartoum state , 37 samples ( 74%) in Bahry state and 3 samples only (6%) in Omdurman state. Total of the positive percentage results from individual milk samples was 32.6 % while 15.6 % and 12.5 % from sales points and bulk milk sample ; respectively. The high mean was found in the individual milk samples in ( Bahry Mean : 0.63 ± STD: 0.48), (Omdurman Mean : 0.14 ± STD:0.36) and ( khartoum Mean : 0.05 ± STD: 0.22) with high significant difference (p-value <0.000) . Then, in the bulk milk samples khartoum was the higest mean (khartoum Mean : 0.21 ± STD: 0.41) then (Bahry Mean : 0.07 ± STD: 0.27)and (Omdurman Mean : 0.04 ± STD:0.21) with (p-value< 0.140). Sales Points was higher in ( khartoum Mean : 0.40 ± STD: 0.50) while Bahry and Omdurman was ( Bahry Mean : (0.00) ± STD: (0.00), (Omdurman Mean : (0.00 ) ± STD: (0.00) respectively with high significant difference (p-value 0.000). A questionnaire was used to collect data regarding to using drugs and acknowledge about withdrawal period reveled that oxytetracycline 20% is the most popular drug with or without any necessary to therapeutics then penicillin and tylosin and there is lack of knowledge to the withdrawal time of used antibiotics.