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19951
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Subject: Plant Biochemistry × Author: KAU × End date: 1999 × Start date: 1995 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Identification, bionomics and control of infective larvae of common nematodes of domestic ruminants
    (Department of Parasitology, College of Veterinary and Animal Sciences, Mannuthy, 1995) Jeyathilakan, N; KAU; Sathianesan, V
    An investigation by coprological examination and copro – culture into the occurrence of common nematodes of cattle buffaloes and goats, specific identity and bionomics of their infective larvae and assessment of ovicidal and larvicidal properties of common fertilizers like urea, ammonium sulphate, quick lime and ash for their control were carried out. The prevalence was highest in goats with strongyle having highest percentage and Haemonchus being the commonest nematode involved. As per the specific identity Haemonchus contortus, Oesophagostomum radiatum, Cooperia punctate, Trichostrongylus axei, T. colubriformis, Bunostomum phlebotomum and Strongyloides papillosus, H. contortus, O. radiatum, T. colubriformis and S. papillosus and H. contortus, O. columbianum, O. asperum, T. colubriformis, T. axei, B. trigonocephalum and S. papillosus were the species of nematodes encountered in cattle, buffaloes and goats respectively. Regarding bionomics none of the larvae showed phototropism and the highest and shortest viability was for Oesophagostomum species and Strongyloides species respectively. Urea and ammonium sulphate (1%) were found to have the highest ovicidal property (100%) with ash having the lowest, when mixed with faeces. The larvicidal property was 100% for quicklime (1%) with no efficacy for other fertilizers, when treated with larval suspension. Scanning electron microscopic study of some of the infective larvae was also carried out.