Some microorganisms such as Salmonella, Listeria and Campylobacter cause foodborne diseases in human, which some control and food safety measures are not able to prevent. However, it is necessary to devise new systems for achieving this target. The purpose of this study was to determine Salmonella contamination through cross contamination of meat in slaughtering premises. For this study, a total of 50 samples were taken from slaughterhouses and transported to the laboratory of food hygiene where they were divided to 2 groups; the first group consists of lean meat, while the other group consists of meat with skin. Each sample (25 g) was prepared according to Standard methods of Institute of standards and Industrial Research of Iran. The McNemar test for qualitative data was used to compare the two groups. According to the results obtained from the 2 groups; 17 samples from first group and 10 samples from second group (meat with skin) were positive. A comparison of these two group showed a significant difference (p<0.05). The results show that the rate of cross contamination with salmonellosis disease in slaughterhouses was high and it proves that they should be omitted by properly skinning and cooking the contaminant.
These days one of the real problems that cause the prejudice-economy in animal farms yearly is parasitic disease. For that reason and to prevent these problems the use of antiparasitic drugs is necessary. Ivermectin is a broad spectrum antiparasitic agent and is in different dosage forms such as injection, oral and pour-on. The aims of this study was to evaluate the efficacy of ivermectin pour-on administration against natural Nematodirus spathiger nematode infections in cattle and also to determine the prevalent rate of this parasite in Tabriz area. In this study, 120 heads of male and female hybrid cattle were used for LPG (larves per gram of feces) feces test. Willis method was applied for feces test and Stoll method was used for counting nematode larvae (LPG). After confirming worm contamination and counting N. spathiger nematode larves in feces in infected animals, ivermectin (0.5 mg/kg) pour-on was administrated. Feces test was repeated in 1, 7, 21 and 28 days after treatment. Results showed that total prevalence of N. spathiger nematode infections was 33.33% in cattle of Tabriz area. The effects of ivermectin pour-on on N. spathiger nematode were 13.37, 44.96, 83.69 and 99.1% in 1, 7, 21 and 28 days respectively. In conclusion, because the effect of this drug against N. spathiger nematode was >99% (p<0.05), cattle can use this drug in anti-parasitic programme. Of course, the effect of this drug on other nematodes and parasitic infections need more investigation.
Problem statement: Hydatidosis has dispersed worldly and is one of the common dangerous diseases between human and animals and is found abundantly in areas that human, dogs and herbivorous are in close relationship. Approach: In this study, firstly, 32 rats were divided into two groups of control and case and 2000 protoscolices were injected into peritoneal hole. After two months, rats of case group were feed by drinkable 5 mL Triclabendazole + 3.41 mL Levamisole for 60 days. Then after 6 months of contamination period, rats of control group and case group killed by anesthetic drug then necropsy and guts inspection of hydatid cyst was implemented. Results: The results show that in livers of control group there are 2 cysts, in kidneys 9 cysts and in lungs 87 cases. Average of contamination in this group to hydatid cyst was 32.6 but in case group there were in liver on cyst, in kidneys 5 cysts and in lungs 63 cysts. Average of guts contamination to hydatid cyst in case group was 23. Conclusion: Analyzing results in case and control groups shows that Triclabendazole + Levamisole drugs effect was 30% that this amount is not sufficient for hydatid cyst treatment.
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