Pokusna infekcija virusom orf u ovaca i koza

Autor: Fadhel Housawi, El Tayb Abu Elzein, Abdul Mohsen Al-Naeem, Ahmad Gameel, Abdul Qader Homaida
Jazyk: angličtina
Rok vydání: 2008
Předmět:
Zdroj: Veterinarski arhiv
Volume 78
Issue 3
ISSN: 1331-8055
0372-5480
Popis: Typical orf lesions were successfully produced (experimently) on the udder dermis of lactating sheep and goats. The animals were subjected to daily clinical examination and the developing lesions were monitored and recorded. The lesions involved were erythema, papules, pustules and firm irregular scabs on the skin of the udders. One goat developed unilateral moderate udder fibrosis and two of the sheep developed bilateral similar lesions. Examination of milk samples from infected animals by California Mastitis Test (CMT) and Mastitis Yellow Card Test was found positive for mastitis. Staphylococcus aureus, Staphylococcus epidermidis, Proteus mirabilis and Arcanobacterium pyogenes were recovered from the milk of affected animals. All the infected animals were sero-converted to orf infection and produced neutralizing antibodies. The causative orf virus was re-isolated from the scabs of their lesions. The bionomics of the disease was discussed.
Pokusna infekcija virusom orf za vrijeme laktacije očitovala se je tipičnim promjenama na koži vimena u ovaca i koza. Životinje su bile dnevno klinički promatrane, a sve uočene promjene zabilježene. Promjene su se očitovale pojavom eritema, papula, pustula i čvrstih nepravilnih krasta na koži vimena. U jedne koze razvila se jednostrana umjerena fibroza vimena, a u dvije su se takve promjene razvile obostrano. Pretraga uzoraka mlijeka kalifornijskim mastitis testom i mjerenjem pH pokazala je da se u zaraženih životinja razvio mastitis. Staphylococcus aureus, Staphylococcus epidermidis, Proteus mirabilis i Arcanobaterium pyogenes izdvojeni su iz vimena zaraženih životinja. U svih zaraženih životinja dokazana su neutralizacijska protutijela za virus orf. Virus je bio ponovo izdvojen iz krasta nastalih nakon pokusne infekcije.
Databáze: OpenAIRE
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