CLINICOTHERAPEUTIC STUDIES ON MYCOTIC DERMATITIS IN CATTLE
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Date
2000
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COLLEGE OF VETERINARY AND ANIMAL SCIENCE,MANNUTHY
Abstract
A study was designed in the Department of Clinical Medicine, College of
Veterinary and Animal Sciences, Mannuthy to understand the occurrence and
etiology of various dermatological problems in cattle. Clinico-pathological
changes and the efficacy of various lines of treatment were also mvestigated.
The occurrence for the period from January-1994 to December-1998 was
found to be 4.49 per cent, 38.32 per cent of the cases being mycotic dermatitis,
31.95 per cent fly bite dermatitis/ectoparasitic dermatitis and 29.73 per cent non
specific dermatological disorders.
Detailed clinical examination of cattle with mycotic dermatitis revealed
scaling, pruritis, alopecia, increased skin thickness and hypopigmentation of hairs.
Presence of biting flies were also recorded.
Skin scrapings collected and examined under microscope revealed presence
of ectcthrix arrangement of fungal spores. Organisms isolated by fungal culture
were Thchophyton vermcosum T. mentagrophytes, Penicillium spp. and
Aspergillus spp.
Neutrophilia, eosinophilia, lower copper and zinc values in blood were
observed in mycotic dermatitis. In fly bite/ectoparasitic dermatitis, along with
lower copper values in blood, slightly lower albumin, albumin/globulin ratio and
eosinophilia were detected. In animals with non-specific dermatological problems
along with eosinophiiia, lower values of haemoglobin, packed cell volume, total
erythrocyte count, copper, zinc, total protein and albumin were recorded.
Histopathological studies revealed chronic dermatitis, with marked
lymphocytic infiltration, epidermal hyperplasia and shedding of keratinised scales
in non-specific dermatological problems. In cases of mycotic dermatitis invasion
of fungi beneath stratum coraeum, hair follicle and hyperkeratosis, were noticed.
Complete recovery was noticed in all animals treated with Cassia alata
leaves paste and Bordeaux mixture - 1 per cent in 21 days. Seven out of eight
animals responded to topical application of tincture iodine and glycerine (1:1).
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