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Yassir Adam Shuaib - One of the best experts on this subject based on the ideXlab platform.

  • Research Article A Study on the Nature of Association between Demodex Mites and Bacteria Involved in Skin and Meibomian Gland Lesions of Demodectic Mange in Cattle
    2016
    Co-Authors: Mukhtar Taha Abu-samra, Yassir Adam Shuaib
    Abstract:

    Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The nature of association between Demodex mites and bacteria involved in bovine demodectic mange lesions and the normal flora inhabiting the skin of noninfected animals was investigated. Demodex bovis and D. ghanensis mites were isolated from the infected purulent material extracted from skin and meibomian gland lesions, respectively. The mites could not be demonstrated in skin brushings or impression smears from the eyes of noninfected cattle. Pathogenic bacteria (Staphylococcus aureus and Streptococcus pyogenes (Group A)) and opportunistic organisms (Proteus vulgaris, Pseudomonas aeruginosa, Staphylococcus epidermidis, andTrueperella pyogenes) were isolated from skin lesions of demodecticmange, andMoraxella bovis and Staphylococcus aureus were isolated from meibomian gland lesions. Bacillus subtilis, Escherichia coli, Proteus vulgaris, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes (Group A) were isolated from skin brushings from noninfected cattle. The nature of association between Demodex mites and bacteria in demodectic mange lesions is synergistic and of equal significance. Pathogenic and opportunistic bacteria facilitated the establishment of Demodex mites in the lesions produced and provided an excellent microclimate for the mites to propagate and reproduce, resulting in severe and progressive disease. The “high-turnover

  • a study on the nature of association between Demodex mites and bacteria involved in skin and meibomian gland lesions of demodectic mange in cattle
    Veterinary Medicine International, 2014
    Co-Authors: Mukhtar Taha Abusamra, Yassir Adam Shuaib
    Abstract:

    The nature of association between Demodex mites and bacteria involved in bovine demodectic mange lesions and the normal flora inhabiting the skin of noninfected animals was investigated. Demodex bovis and D. ghanensis mites were isolated from the infected purulent material extracted from skin and meibomian gland lesions, respectively. The mites could not be demonstrated in skin brushings or impression smears from the eyes of noninfected cattle. Pathogenic bacteria (Staphylococcus aureus and Streptococcus pyogenes (Group A)) and opportunistic organisms (Proteus vulgaris, Pseudomonas aeruginosa, Staphylococcus epidermidis, and Trueperella pyogenes) were isolated from skin lesions of demodectic mange, and Moraxella bovis and Staphylococcus aureus were isolated from meibomian gland lesions. Bacillus subtilis, Escherichia coli, Proteus vulgaris, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes (Group A) were isolated from skin brushings from noninfected cattle. The nature of association between Demodex mites and bacteria in demodectic mange lesions is synergistic and of equal significance. Pathogenic and opportunistic bacteria facilitated the establishment of Demodex mites in the lesions produced and provided an excellent microclimate for the mites to propagate and reproduce, resulting in severe and progressive disease. The “high-turnover” granulomatous reaction which characterized the histopathological changes proved that Demodex mites and associated bacteria were persistent and immunogenic.

B R Ravikumar - One of the best experts on this subject based on the ideXlab platform.

  • Scavon Vet Spray for the treatment of Demodectic Mange in Calf
    2015
    Co-Authors: B R Ravikumar, Mitra S. K
    Abstract:

    The parasitic mite, Demodex bovis, causes demodectic mange in cattle. Calves probably become infected during the first few days of nursing infected cows. Poor nutrition, stress and the presence of other infections may contribute to the susceptibility of cattle to Demodex outbreaks. This susceptibility may also be genetically determined. This study was conducted to assess the efficacy of SCAVON VET (The Himalaya Drug Company,Bangalore, India,) spray, a polyherbal formulation in the treatment of demodectic mange in calf. Case history and clinical observations Three months old Holstein Freshen calf was presented with a history of hair fall and reddened skin color. Clinical examination revealed scaly, wrinkled, thickened skin, hair fall and a change in skin colour from its normal color to red, and bruises on the face and hind limbs. The case was tentatively diagnosed as demodectic mange and was confirmed by finding the mite during microscopic examination of deep skin scrapings of the affected area. Treatment and result The infected area was cleaned with potassium permanganate solution (Venugopalan, 1995) and wiped dry with sterile cotton, SCAVON VET spray was applied twice a day liberally over the surface of the infected area for 15 days. The calf showed recovery in 15 days without any complications. Observations indicated that SCAVON VET spray minimized th

  • Demodectic Mange
    2013
    Co-Authors: In Calf, B R Ravikumar, Mitra S. K
    Abstract:

    The parasitic mite, Demodex bovis, causes demodectic mange in cattle. Calves probably become infected during the first few days of nursing from infected cows. Poor nutrition, stress and the presence of other infections may contribute to the susceptibility of cattle to Demodex outbreaks. This susceptibility may also be genetically determined. This study was conducted to assess the efficacy of SCAVON VET (The Himalaya Drug Company, Bangalore, India,) spray, a polyherbal formulation in the treatment of demodectic mange in calf. Case history and clinical observations Three months old Holstein Freshen calf was presented with a history of hair fall and redened skin color. Clinical examination revealed scaly, wrinkled, thickened skin, hair fall and a change in skin colour from its normal color to red, and bruises on the face and hind limbs. The case was tentatively diagnosed as demodectic mange and was confirmed by finding the mite during microscopic examination of deep skin scrapings of the affected area. Treatment and result The infected area was cleaned with potassium permanganate solution (Venugopalan, 1995) and wiped dry with sterile cotton, SCAVON VET spray was applied twice a day liberally over the surface of the infected area for 15 days. The calf showed recovery in 15 days without any complications. Observations indicated that SCAVON VET spray minimized the demodectic mange in calf by about 60 % by 8 days, 80 % by 10 days and 100 % by 15 days. Recurrence was not seen in a follow-up period of 1 week. The herbal ingredients in SCAVON VET spray namely Eucalyptus globules (Tailapatra), Azadirachta indica (Nimba), Andropogon citratus (Bhutrina), Curcuma longa (Haridra) and Cedrus deodara (Devadaru) are known to be antibacterial,antimycotic (Grover and Rao, 1977) and are also known to possess insecticidal, antiseptic and wound healing properties (Satyavati et al., 1976)

  • scavon vet spray for the treatment of demodectic mange in calf
    Veterinary World, 2009
    Co-Authors: B R Ravikumar
    Abstract:

    The parasitic mite, Demodex bovis, causes demodectic mange in cattle. Calves probably become infected during the first few days of nursing infected cows. Poor nutrition, stress and the presence of other infections may contribute to the susceptibility of cattle to Demodex outbreaks. This susceptibility may also be genetically determined. This study was conducted to assess the efficacy of SCAVON VET (The Himalaya Drug Company,Bangalore, India,) spray, a polyherbal formulation in the treatment of demodectic mange in calf.

Mitra S. K - One of the best experts on this subject based on the ideXlab platform.

  • Scavon Vet Spray for the treatment of Demodectic Mange in Calf
    2015
    Co-Authors: B R Ravikumar, Mitra S. K
    Abstract:

    The parasitic mite, Demodex bovis, causes demodectic mange in cattle. Calves probably become infected during the first few days of nursing infected cows. Poor nutrition, stress and the presence of other infections may contribute to the susceptibility of cattle to Demodex outbreaks. This susceptibility may also be genetically determined. This study was conducted to assess the efficacy of SCAVON VET (The Himalaya Drug Company,Bangalore, India,) spray, a polyherbal formulation in the treatment of demodectic mange in calf. Case history and clinical observations Three months old Holstein Freshen calf was presented with a history of hair fall and reddened skin color. Clinical examination revealed scaly, wrinkled, thickened skin, hair fall and a change in skin colour from its normal color to red, and bruises on the face and hind limbs. The case was tentatively diagnosed as demodectic mange and was confirmed by finding the mite during microscopic examination of deep skin scrapings of the affected area. Treatment and result The infected area was cleaned with potassium permanganate solution (Venugopalan, 1995) and wiped dry with sterile cotton, SCAVON VET spray was applied twice a day liberally over the surface of the infected area for 15 days. The calf showed recovery in 15 days without any complications. Observations indicated that SCAVON VET spray minimized th

  • Demodectic Mange
    2013
    Co-Authors: In Calf, B R Ravikumar, Mitra S. K
    Abstract:

    The parasitic mite, Demodex bovis, causes demodectic mange in cattle. Calves probably become infected during the first few days of nursing from infected cows. Poor nutrition, stress and the presence of other infections may contribute to the susceptibility of cattle to Demodex outbreaks. This susceptibility may also be genetically determined. This study was conducted to assess the efficacy of SCAVON VET (The Himalaya Drug Company, Bangalore, India,) spray, a polyherbal formulation in the treatment of demodectic mange in calf. Case history and clinical observations Three months old Holstein Freshen calf was presented with a history of hair fall and redened skin color. Clinical examination revealed scaly, wrinkled, thickened skin, hair fall and a change in skin colour from its normal color to red, and bruises on the face and hind limbs. The case was tentatively diagnosed as demodectic mange and was confirmed by finding the mite during microscopic examination of deep skin scrapings of the affected area. Treatment and result The infected area was cleaned with potassium permanganate solution (Venugopalan, 1995) and wiped dry with sterile cotton, SCAVON VET spray was applied twice a day liberally over the surface of the infected area for 15 days. The calf showed recovery in 15 days without any complications. Observations indicated that SCAVON VET spray minimized the demodectic mange in calf by about 60 % by 8 days, 80 % by 10 days and 100 % by 15 days. Recurrence was not seen in a follow-up period of 1 week. The herbal ingredients in SCAVON VET spray namely Eucalyptus globules (Tailapatra), Azadirachta indica (Nimba), Andropogon citratus (Bhutrina), Curcuma longa (Haridra) and Cedrus deodara (Devadaru) are known to be antibacterial,antimycotic (Grover and Rao, 1977) and are also known to possess insecticidal, antiseptic and wound healing properties (Satyavati et al., 1976)

Gervásio H. Bechara - One of the best experts on this subject based on the ideXlab platform.

  • Demodicose bovina no Estado da Paraíba
    Pesquisa Veterinária Brasileira, 2004
    Co-Authors: João Luiz Horácio Faccini, Ana Clara Gomes Dos Santos, Gervásio H. Bechara
    Abstract:

    Cases of bovine demodicosis caused by Demodex bovis were reported in a Sindhi herd from December 1989 to January 1992. Both localized and generalized forms were diagnosed. This is the first report of the generalized form in Brazil. In the first two years, demodicosis was diagnosed only in cattle 2 years old, respectively. Clinical signs varied from a few small nodules to a thickened skin with soft large nodules in the localized and generalized forms, respectively. Main microscopic features of the nodules in the generalized form consisted of acanthosis with hyperqueratosis, chronic sebaceous adenitis, subcutaneous muscular necrosis, focal cellular degeneration of the epidermis basal layer and presence of large number of mites inside the lumen of dilated hair follicles. In addition, a chronic perifoliculitis was observed, characterized by lymphoplasmocytic infiltrate which also contained macrophages and neutrophils. It is suggested that poor nutrition and stress due to prolonged drought probably contributed to the increase of susceptibility of the herd to mite infestation.

  • Demodicose bovina no Estado da Paraíba Bovine demodicosis in the state of Paraíba, northeastern Brazil
    Colégio Brasileiro de Patologia Animal (CBPA), 2004
    Co-Authors: João Luiz Horácio Faccini, Ana Clara G. Santos, Gervásio H. Bechara
    Abstract:

    Casos de demodicose bovina foram observados em um rebanho da raça Sindhi no período de dezembro 1989 a janeiro 1992. Ambas as formas, localizada e generalizada, foram diagnosticadas. Este é o primeiro relato da forma generalizada no Brasil. Nos dois primeiros anos, a demodicose foi diagnosticada somente em animais < 2 anos, enquanto que nos dois últimos anos, animais de todas as idades estavam positivos. A prevalência variou de 20,4% (11/54) a 53,1% (26/49) e 13,2% (12/91) a 14,8% (9/61) nos animais com menos e mais de 2 anos de idade, respectivamente. Os sinais clínicos variaram de pequenos nódulos a espessamento da pele com nódulos grandes e moles, nas formas localizada e generalizada, respectivamente. Os principais achados histopatológicos dos nódulos cutâneos na forma generalizada foram: acantose com hiperqueratose, adenite sebácea crônica, necrose muscular subcutânea e degeneração focal de células da camada basal da epiderme, além da presença de grande número de ácaros de localização intraluminal nos terços médio e inferior de folículos pilosos dilatados. Observou-se ainda perifoliculite crônica, caracterizada por infiltrado celular predominantemente linfoplasmocitário contendo ainda macrófagos e neutrófilos, que envolvia bulbos pilosos. O estado nutricional precário dos animais e o estresse provocado pela longa estiagem, provavelmente, contribuíram para aumentar a suscetibili-dade do rebanho à infestação pelos ácaros.Cases of bovine demodicosis caused by Demodex bovis were reported in a Sindhi herd from December 1989 to January 1992. Both localized and generalized forms were diagnosed. This is the first report of the generalized form in Brazil. In the first two years, demodicosis was diagnosed only in cattle < 2 years old, whereas animals of all ages were positive in the last two years. Prevalence varied from 20.4% (11/54) to 53.1% (26/49) and 13.2% (12/91) to 14.8% (9/61) for cattle < 2 years old and > 2 years old, respectively. Clinical signs varied from a few small nodules to a thickened skin with soft large nodules in the localized and generalized forms, respectively. Main microscopic features of the nodules in the generalized form consisted of acanthosis with hyperqueratosis, chronic sebaceous adenitis, subcutaneous muscular necrosis, focal cellular degeneration of the epidermis basal layer and presence of large number of mites inside the lumen of dilated hair follicles. In addition, a chronic perifoliculitis was observed, characterized by lymphoplasmocytic infiltrate which also contained macrophages and neutrophils. It is suggested that poor nutrition and stress due to prolonged drought probably contributed to the increase of susceptibility of the herd to mite infestation

João Luiz Horácio Faccini - One of the best experts on this subject based on the ideXlab platform.

  • Demodicose bovina no Estado da Paraíba
    Pesquisa Veterinária Brasileira, 2004
    Co-Authors: João Luiz Horácio Faccini, Ana Clara Gomes Dos Santos, Gervásio H. Bechara
    Abstract:

    Cases of bovine demodicosis caused by Demodex bovis were reported in a Sindhi herd from December 1989 to January 1992. Both localized and generalized forms were diagnosed. This is the first report of the generalized form in Brazil. In the first two years, demodicosis was diagnosed only in cattle 2 years old, respectively. Clinical signs varied from a few small nodules to a thickened skin with soft large nodules in the localized and generalized forms, respectively. Main microscopic features of the nodules in the generalized form consisted of acanthosis with hyperqueratosis, chronic sebaceous adenitis, subcutaneous muscular necrosis, focal cellular degeneration of the epidermis basal layer and presence of large number of mites inside the lumen of dilated hair follicles. In addition, a chronic perifoliculitis was observed, characterized by lymphoplasmocytic infiltrate which also contained macrophages and neutrophils. It is suggested that poor nutrition and stress due to prolonged drought probably contributed to the increase of susceptibility of the herd to mite infestation.

  • Demodicose bovina no Estado da Paraíba Bovine demodicosis in the state of Paraíba, northeastern Brazil
    Colégio Brasileiro de Patologia Animal (CBPA), 2004
    Co-Authors: João Luiz Horácio Faccini, Ana Clara G. Santos, Gervásio H. Bechara
    Abstract:

    Casos de demodicose bovina foram observados em um rebanho da raça Sindhi no período de dezembro 1989 a janeiro 1992. Ambas as formas, localizada e generalizada, foram diagnosticadas. Este é o primeiro relato da forma generalizada no Brasil. Nos dois primeiros anos, a demodicose foi diagnosticada somente em animais < 2 anos, enquanto que nos dois últimos anos, animais de todas as idades estavam positivos. A prevalência variou de 20,4% (11/54) a 53,1% (26/49) e 13,2% (12/91) a 14,8% (9/61) nos animais com menos e mais de 2 anos de idade, respectivamente. Os sinais clínicos variaram de pequenos nódulos a espessamento da pele com nódulos grandes e moles, nas formas localizada e generalizada, respectivamente. Os principais achados histopatológicos dos nódulos cutâneos na forma generalizada foram: acantose com hiperqueratose, adenite sebácea crônica, necrose muscular subcutânea e degeneração focal de células da camada basal da epiderme, além da presença de grande número de ácaros de localização intraluminal nos terços médio e inferior de folículos pilosos dilatados. Observou-se ainda perifoliculite crônica, caracterizada por infiltrado celular predominantemente linfoplasmocitário contendo ainda macrófagos e neutrófilos, que envolvia bulbos pilosos. O estado nutricional precário dos animais e o estresse provocado pela longa estiagem, provavelmente, contribuíram para aumentar a suscetibili-dade do rebanho à infestação pelos ácaros.Cases of bovine demodicosis caused by Demodex bovis were reported in a Sindhi herd from December 1989 to January 1992. Both localized and generalized forms were diagnosed. This is the first report of the generalized form in Brazil. In the first two years, demodicosis was diagnosed only in cattle < 2 years old, whereas animals of all ages were positive in the last two years. Prevalence varied from 20.4% (11/54) to 53.1% (26/49) and 13.2% (12/91) to 14.8% (9/61) for cattle < 2 years old and > 2 years old, respectively. Clinical signs varied from a few small nodules to a thickened skin with soft large nodules in the localized and generalized forms, respectively. Main microscopic features of the nodules in the generalized form consisted of acanthosis with hyperqueratosis, chronic sebaceous adenitis, subcutaneous muscular necrosis, focal cellular degeneration of the epidermis basal layer and presence of large number of mites inside the lumen of dilated hair follicles. In addition, a chronic perifoliculitis was observed, characterized by lymphoplasmocytic infiltrate which also contained macrophages and neutrophils. It is suggested that poor nutrition and stress due to prolonged drought probably contributed to the increase of susceptibility of the herd to mite infestation