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Subject: Veterinary Parasitology ×

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Now showing 1 - 6 of 6
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    ThesisItemOpen Access
    Epidemiology of Ixodid ticks in cattle and detection of resistance against synthetic pyrethroids in Rhipicephalus (Boophilus) microplus in Mid hill zone of Himachal Pradesh
    (Palampur, 2021-11-05) Sharma, Romita; Sharma, Devina
    The current study was conducted to determine the epidemiology of ixodid ticks in cattle along with assessment of associated risk factors in Mid hill zone of Himachal Pradesh. The study was conducted from October, 2020 to September, 2021. A total of 749 animals were screened for tick infestation from five districts of Himachal Pradesh viz.Kullu, Mandi, Shimla, Kangra and Chamba. The overall tick prevalence rate was recorded to be 68.62%. Three species of ticks were recorded viz. Rhipicephalus (Boophilus) microplus, R. (B.) annulatus and Hyalomma anatolicum anatolicum with the prevalence rate of 64.56, 32.91 and 2.53%, respectively. Ticks were most prevalent in rainy season (76.2%) followed by summer (65.1%) and in winter season (63.9%) (P1 year of age group (78.9%), followed by >6months-1 year age (44.1%) and least in young animals (25.6%) (P0.05) when the acaricidal application was done both on body of animals and shed after period of every three months. In order to determine the resistance against synthetic pyrethroids viz. deltamethrin and cypermethrin in R. (B.) microplus, in vitro Larval Packet Test bioassay was performed. The results revealed that R. (B.) microplus field isolates collected from districts Kangra and Kullu were found to be having level I resistance whereas isolates collected from districts Mandi, Shimla and Chamba were having level II resistance against deltamethrin. Rhipicephalus (Boophilus) microplus was found to be susceptible against cypermethrin in all the five districts of mid hill zone of Himachal Pradesh.
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    ThesisItemOpen Access
    ANTICOCCIDIAL AND IMMUNOMODULATORY EFFECTS OF INDIGENOUS HERBAL PLANTS AGAINST EXPERIMENTAL COCCIDIOSIS IN POULTRY
    (CSKHPKV, Palampur, 2014-07-16) Sharma, Vineet; Agnihotri, R.K.
    The anticoccidial and immunomodulatory effects of aqueous extract of Zingiber officinale (rhizome), ethanolic extract of Azadirachta indica (leaves) and methanolic extract of Hippophae salicifolia (leaves) were evaluated against the mixed coccidial infection (Eimeria spp.), in experimental trial in poultry. The present study revealed that coccidial infection caused significant decrease in body weights, inferior feed conversion ratio, hematological as well as biochemical parameters in the birds. However, after treatment with herbal plant extracts, significant increase in weight gain was observed along with other parameters. The ethanolic extract of neem (Azadirachta indica) @ 7g/liter of water was found to have better anticoccidial activity and least histopathological lesions as compared to other herbal plants extract and their mixture. Aqueous extract of ginger (Zingiber officinale) @ 6g/liter of water was found to be the best feed additive and most effective in improving body weights, feed conversion ratio, improving hematological and biochemical indices in infected birds followed by mixture of these herbs than neem (Azadirachta indica) ethanolic extract and than seabuckthorn (Hippophae salicifolia) methanolic extract @ 10g/liter of water. As an immunomodulatory, Aqueous extract of ginger (Zingiber officinale) improved humoral as well as cell mediated immune responses in infected birds, followed by mixture of these herbal plants than neem (Azadirachta indica) ethanolic extract and seabuckthorn (Hippophae salicifolia) methanolic extract.
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    ThesisItemOpen Access
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    ThesisItemOpen Access
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    ThesisItemOpen Access
    Evaluation of anthelmintic effects of indigenous medicinal plants against ascaidia galli
    (CSKHPKV, Palampur, 2013) Sen, Divya; Agnihotri, R.K.
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    ThesisItemOpen Access