the objective of this study was to assess the importance of strain and sex and their interaction effect on broiler chickens’ performance and susceptibility to ascites. chicks from three strains (ross 308, cobb 500 and arian, labeled as a, b and c respectively) were obtained from the same age breeder and sexed when one-day-old. each crosses’ sex was assigned to four pens of 60 broilers each. bod...

conclusions it appears that the patient-caregiver education and follow-up program had a beneficial effect on the caregiver strain index compared to the usual care. results the caregiver strain index decreased significantly in the intervention group after the patient-caregiver education and follow-up (p < 0.001), while the control group’s scores did not change (p = 0.04). background in recent ye...

Stability studies play a critical role in assuring product quality at all points in the vaccine life cycle and havea major impact on the success of immunization programs worldwide. The purpose of stability study isdetermination of the vaccine quality under the variety of environmental factors and to establish a re-testperiod or a shelf life and recommended storage conditions. In this study thre...

This study was designed to determine the isolation rate, serovars and biochemical profiles of e. coli from cases of colibacillosis and dead-in-shell embryos in Zaria-Northern Nigeria. The isolation rate of e. coli from hatcheries studied were 4.67% and 7.50% from farms of Simtu Agricultural Company and National Animal Production Research Institute (NAPRI) Shika Zaria, Nigeria respectively. Twen...

Uropathogenic Escherichia coli are the major causative agent of urinary tract infection--they may simultaneously express a number of virulence factors to cause disease. The aim of this study was to investigate the relation between virulence factors content of fifteen UPEC isolates and their pathogenic potential. The isolates belonged to the five serotypes O78:K80, O114:K90, O142:K86, O164 and O...

Background: Florfenicol (Ff) is a synthetic antibiotic with a broad antibacterial spectrum and high therapeutic effectiveness that was specifically developed for veterinary use as well as, doxcycline is an antibiotic synthetically derived from oxytetracycline. Methods: In the present study, the in-vitro efficacy of Ff and doxcycline against Salmonella entertidis and Escherichia coli (Serotype O...

To examine the genetic background of avian pathogenic Escherichia coli (APEC) that affects virulence of this microorganism, we characterized the virulence genes of 101 APEC strains isolated from infected chickens between 1985 ˜ 2005. Serotypes were determined with available anti-sera and median lethal doses were determined in subcutaneously inoculated chicks. The virulence genes we tested inclu...

background: hydatidosis or cystic hydatid disease is one of the most important diseases in human and animals. identification of strains is important for improvement of control and prevention of dis-ease. the aim of this study was to determine the strains isolated from human and domestic animals in ilam province, iran, using pcr-rflp method. methods: respectively, 30 and 4 animal and human hydat...