[Study on gastrointestinal and external parasites of goats in west Azerbaijan Iran]

Parasitism is one of the major problems affecting goat's health. It causes a considerable economic loss in small ruminants of worldwide. The main objective of the present study was to determine the prevalence and intensity of gastrointestinal and external parasite infections in goats of North-West of Iran. In spite of the importance of goats in this region, there is no detailed quantitative study on prevalence of goat parasites. Fecal samples were collected from 403 goat for identification of gastrointestinal parasites and presence of external parasites. Seven different species of gastrointestinal parasites including Strongylida, Marshalagia, Nematodirus, Trichuris, Cystocoulus, Monizia and Fasciola, were identified in fecal samples. The number and percentage of infected goats for these parasites were 206 [51.11%] for Strongylida, 37 [9.18%] for Marshalagia, 12[2.97%] for Nematodirus, 58 [14.39%]for Trichuris 3 [0.7%] for Cystocoulus, 23[5.7%] for Monizia and 4[1%] for Fasciola. The number of eggs ranged from 3 to 172 eggs per gram of feces. A number of 112 samples [27.79%] were positive for Eimeria with oocysts number of 1-390 per gram of feces. It was also found that 12[3%], 203[50.4%] and 131[32.5%] of goats were infested by Sarcoptes scabeii, Damalinia caprae and Ripicephalus bursa, respectively. On each goat 1-5 hard ticks were found at different sites of their body. Results showed that intensity of gastrointestinal parasite infection of goats were low in the region therefore intensive parasitic treatment should not be recommended, It can be concluded that fecal examination should be considered before applying any parasitic treatment

Mesenteric lymph nodes infection with linguatula serrata nymphs in cattle

871 mesenteric lymph nodes taken from 110 native cattle from Urmia slaughter-house with different ages were examined for Linguatula serrata infection. The lymph nodes were studied based on their colour and consistency. 44% of the cattle were found positive for L. serrata infection. The number of parasites isolated from each infected lymph node varied from 1 to 69 with a mean of 5.48. There were no significant differences in the number of parasites in different age groups. The study underlined the need for a more thorough investigation of mesenteric lymph nodes inspection in the cattle of this region

[ evaluation of intradermal skin test to diagnosis of mesenteric lymph node infection to linguatula serrata nymphs in sheep]

To compare the skin responses of infected andnon-infected sheep with Linguatula serrata nymph.Experimental study.Thirty native sheep.The nymphs of Linguatula were collectedfrom mesenteric lymph nodes of slaughtered animals andthe protein of nymphs was extracted. The extracted proteinwas injected at the dose of 0.2 ml intra-dermopalpebrallyinto the skin of lower eyelid of sheep. A placebo wasinjected into the skin of contralateral eyelid. The skinreaction was evaluated 1 hour after injection. Infectionstatus of injected sheep was determined by demonstrationof Linguatula serrata nymphs in the mesenteric lymphnodes after slaughter as gold standard.Compute sensitivity, specificity, accuracy, positiveandnegativepredictivevalues, likelihood ratio and kappa statistic of the intradermal skintest at a different cut off values.Ourcalculatedmeasuresofdiagnosticperformance of intradermal skin test of Linguatula serrate were lower than anticipated and those previously reported.Intradermal skin test can be used for detectionof non-infected sheep