B. Nikolov

In ovo induced hepatic preneoplasia by n-nitrosodimethylamine and n-nitrosodiethylamine in guinea fowl embryos

B. Nikolov

Avian embryos have been gaining increasing scientific interest as a valuable model system for the experimental cancer research, that could contribute to a significant reduction of the number of laboratory animals. The toxic and carcinogenic effects induced in ovo by N-nitrosodimethylamine (NDMA) …

Seroprevalence of Actinobacillus pleuropneumoniae infection in pigs from Bulgaria

R. Pepovich, Kalin Hristov, B. Nikolov, K. Genova et autres

Actinobacillus pleuropneumoniae (App) is the etiological agent of porcine pleuropneumonia. The purpose of the study was to present a serological report on App prevalence among pigs in industrial farms in Bulgaria. Seventy-two pigs from four industrial farms in four districts of Bulgaria …

bg, it (code pays fourni par la source)

STUDY ON THE EFFECTIVENESS OF INTRACISTERNAL ANTIBIOTIC TREATMENT FOR THE CONTROL OF MASTITIS IN GOATS

Kalin Hristov, R. Pepovich, B. Nikolov

The aim of this study is to investigate the healing and prophylactic effect of drying-off antibiotic therapy using the selective and non-selective approach of administration of the antibiotics. First experimental group at the start of the dry period were treated non-selectively (all …

bg (code pays fourni par la source)

Pathological changes in natural infection of pheasants with highly pathogenic avian influenza A (H5N8) in Bulgaria

Georgi Stoimenov, Gabriela Goujgoulova, B. Nikolov, Kalin Hristov et autres

INTRODUCTION: The study of histopathological changes caused by influenza A (H5N8) viral infection in bird species is essential for the understanding of their role in the spread of this highly infectious virus. However, there are few such studies under natural conditions in …

bg (code pays fourni par la source)

In ovo hepatocarcinogenicity of N-nitrosodimethylamine and N-nitrosodimethylamine in White Leghorn chickens

A. Kril, Ani Georgieva, B. Nikolov, R. Pepovich et autres

Avian embryos have been gaining an increasing scientific interest as a valuable model system for the experimental cancer research that could contribute to a significant reduction of the number of laboratory animals. In the present study, the liver lesions induced by N-nitrosodimethylamine …

bg, Nigéria (code pays fourni par la source)

Histopathological findings in Dalmatian pelicans (Pelecanus crispus) naturally infected with avian influenza subtype A H5N1 in Bulgaria

Georgi Stoimenov, Gabriela Goujgoulova, B. Nikolov, R. Petrova et autres

The aim of this study is to estimate the histopathological changes in visceral organs of naturally infected with the avian influenza virus (AIV) subtype A H5N1 dalmatian pelicans in Bulgaria. The identified gross lesions are: haemorrhagic small intestine, sparse content in gizzard …

Nigéria, bg (code pays fourni par la source)

Assessment of serological tests of the Influenza A infection in wild migratory and zoo birds during the epizootic in Bulgaria, 2015.

Georgi Stoimenov, Gabriela Goujgoulova, G. Georgiev, Chavdar Filipov et autres

Histopathological findings in Dalmatian pelicans (Pelecanus crispus) naturally infected with avian influenza subtype A H5N1 in Bulgaria

Ivona Dimitrova, RENETA PETROVA, Atanaska Teneva, Gabriela Goujgoulova et autres

Investigation of Bacterial Infections in Pig Farms affected by Respiratory Disease Complex in Bulgaria

R. Pepovich, B. Nikolov, Kalin Hristov, Krasimira Genova et autres

This study attempted to identify bacterial pathogens and determine their importance in porcine respiratory disease complex in order to identify effective and adequate measures for their control. The study was conducted in three industrial intensive pig farms in different regions of Bulgaria. …

bg, cn (code pays fourni par la source)

Characterization of Microbial Causative Agents of Subclinical Mastitis in Goats in Bulgaria

Kalin Hristov, Teodora P. Popova, R. Pepovich, B. Nikolov

Mastitis is the most prevalent mammary gland disease in goats. It has a number of unfavorable health effects in the affected animals and leads to economic losses in the farms. The aim of this study was to isolate and identify microorganisms causing …

Clinical Testing of Combined Vaccine Against Enzootic Pneumonia in Industrial Pig Farming in Bulgaria

R. Pepovich, B. Nikolov, Ivo Sirakov, Krasimira Genova et autres

Abstract In the pig farm with signs of a respiratory disease complex and laboratory confirmed enzootic pneumonia, the prophylactic efficacy of the combination vaccine (M. hyo+PCV2), a single injection administered intramuscularly 21 days after birth, at a dose of 2 ml was …

bg (code pays fourni par la source)

Prevalence of mastitis and dynamics of health status mammary gland during lactation and dry period in goats.

Kalin Hristov, П. Парванов, R. Pepovich, B. Nikolov

The purpose of this study was to investigate the prevalence of mastitis and dynamics of different mastitis forms in goats during lactation and the dry period .The prevalence of mastitis was analyzed in 250 goats. Parallel traced 52 dairy halves with different …