Stereoselective hydrogenation of tetrasubstituted olefins is an attractive method to access compounds with two contiguous stereocenters. However, homogeneous catalysts for enantio- and diastereoselective hydrogenation exhibit low reactivity toward tetrasubstituted olefins due to steric crowding between the ligand scaffold and the substrate. Monometallic heterogeneous catalysts, on the other hand, provide accessible surface active sites for hindered olefins but exhibit unpredictable and inconsistent stereoinduction.
View Article and Find Full Text PDFGoat warble fly infestation (GWFI) is an economically important myiasis caused by larvae of Przhevalskiana silenus (Diptera, Oestridae), prevalent in countries of the Mediterranean Basin and Indian subcontinent. GWFI is characterized by the presence of subcutaneous warbles at the lumbar and sacral region of dorsum in the infested animal. The early larval instars (L1 and L2) remain inaccessible to physical detection due to their small size and subcutaneous presence thus causing hindrance in the diagnosis.
View Article and Find Full Text PDFStatus of ivermectin resistance was studied in 16 isolates of Rhipicephalus (Boophilus) microplus ticks collected from north-western Himalayan region of India using larval immersion test (LIT). Regression graphs of probit mortality of larval ticks plotted against log values of concentrations of ivermectin were utilized for the determination of slope of mortality, lethal concentrations (LC and LC) and resistance ratios (RRs). Out of 16 isolates examined, 15 were found resistant against ivermectin.
View Article and Find Full Text PDFThe present study was conducted to evaluate the changes in oxidative stress parameters on experimental infection with in Swiss albino mice. The mice were divided into four groups viz., group I-IV, each group comprising of 15 mice.
View Article and Find Full Text PDFMyiasis caused by Hypodermatinae flies is an economically important disease affecting domesticated and wild ruminants in countries of the Mediterranean and Indian subcontinent. The adult flies have a short life span of 1 week, and they spread disease by laying their eggs on the coat of animals. Hypoderma spp.
View Article and Find Full Text PDFThe efficacy of eprinomectin and ivermectin pour-on was evaluated against Sarcoptes scabiei in naturally infested buffaloes. Eighteen animals were allocated into three groups (A, B and C) of six animals each. Animals in group A were treated with eprinomectin (pour-on) @ 0.
View Article and Find Full Text PDFIncidence of Buxtonella sulcata was recorded as 20.9 % in bovines (n = 374) of R.S.
View Article and Find Full Text PDFHaemoproteus columbae is the major protozoan infection reported in pigeon and appeared in the erythrocyte of the peripheral circulation. Incidence and parasitaemia of H. columbae in pigeon was studied in different localities of Jammu, India for a period from April to September 2010 using thin blood smear examination.
View Article and Find Full Text PDFTo determine the prevalence of ticks, 960 bovines (cattle 480, buffaloes 480) were examined from organised and unorganised dairy units of Jammu district during March 2012 to February 2013. The overall infestation rate was found to be 42.18 %.
View Article and Find Full Text PDFAn epidemiologic study was carried out to investigate the prevalence and analysis of risk of Cryptosporidium infection in lambs in Jammu district. Faecal samples of 120 lambs of different age groups viz., <1 month, 1-3 months and 3-6 months were assessed.
View Article and Find Full Text PDFIn vitro efficacy of methanolic extract of Atropa belladonna and its components scopolamine and atropine was assessed against Rhipicephalus (Boophilus) microplus. Five concentrations of the extract (1.25%, 2.
View Article and Find Full Text PDFEpidemiology of paramphistomosis in sheep and goats was studied using field and abattoir samples at Jammu, India. Abattoir examination revealed that 36.2 % of sheep and 30.
View Article and Find Full Text PDFCutaneous myiasis caused by the Old World screw-worm fly, Chrysomya bezziana, is a commonly occurring infestation of livestock and man in Southeast Asian and African countries. A buffalo, aged five years was presented with traumatic wound in the abnormal growth at the base of tail, housing maggots in it. Based on morphological features, the collected larvae were identified as C.
View Article and Find Full Text PDFWarble fly infestation is primarily a myiasis of cattle and goat. However, a nondescript sheep from an endemic region was observed with nodules under subcutaneous tissue. So, this paper reports infestation of a sheep with Przhevalskiana silenus larvae in Jammu region of North India.
View Article and Find Full Text PDFThe prevalence of dicrocoeliosis was estimated by the examination of liver of slaughtered goats (n = 228) brought from two major goat rearing regions (Kandi and R.S. Pura) of Jammu province of India.
View Article and Find Full Text PDFThe prevalence of hydatidosis was carried out in slaughtered goats (n = 177) by liver and lung examination at Jammu. The prevalence rate of hydatidosis was 19.8 %.
View Article and Find Full Text PDFA trial was conducted on 12 buffaloes naturally infested with Rhipicephalus (Boophilus) microplus to evaluate the efficacy of eprinomectin pour-on at a dose of 0.5 mg/kg body weight. A reduction in live tick count by 45.
View Article and Find Full Text PDFA total of 1920 faecal samples of sheep (960) and goats (960) of stationary flocks of the middle agro-climatic zone of Jammu province were examined, out of which 67.24 % animals were positive for helminthic infections. The different nematodes observed were strongyles (50.
View Article and Find Full Text PDFThe efficacy of minidose of pour-on ivermectin and eprinomectin formulations against first instar larvae of Przhevalskiana silenus was observed in naturally infested goats in the Jammu region, North India. The study was performed in mid August 2011. A total of 280 goats were randomly divided in to 7 groups of 40 each.
View Article and Find Full Text PDFNecropsy of gastrointestinal tract of 125 free-range chickens from a subtropical and humid zone of northwestern India revealed four nematode spp. (Ascaridia galli, Heterakis gallinarum, Capillaria spp. and Cheilospirura hamulosa) and four cestode spp.
View Article and Find Full Text PDFEconomic losses incurred by Przhevalskiana silenus in goats of Jammu province of Jammu and Kashmir (North India) were assessed from July 2005 to June 2006. Abattoir studies revealed holes in hides for 112 days (mid-December 2005 to first week of April 2006) and trimming of carcass for 243 days (July 2005 to February 2006) during a lifecycle, leading to annual losses of Rs. 7,391,432 and Rs.
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