the pathogenicity of a recent isolate of infectious bursal disease virus (ibdv), ir499, isolated from a nonvaccinated flock with 17.5 % mortality rate in susceptible spf chickens, chickens embryos and broilers was discussed. the molecular characterization of the virus based on the restriction fragment length polymorphism (rflp) pattern was also investigated. the mortality rates were 85% and 22%...

The objective of this study was to determine the genetic diversity and virulence factors of Vibrio cholerae and V. parahaemolyticus from selected aquatic environments in Bachok, Kelantan, Malaysia. Out of 50 water samples, 33 were confirmed with the presence of presumptive V. cholerae and V. parahaemolyticus based on biochemical tests. Primers targeting toxR gene specific for V. cholerae (800bp...

pus was available for culture.) The results in Bristol further supported a impression that the phage type of the staphylococcus was related to the severity 01 infection. Thus the troublesome Phage Type 80 Staphylococcus which was n isolated in 1953 by Rountree and Freeman (1955) in Australia3 has enhanced virulen. and so infection with it leads to sloughs and tissue damage with considerable tox...

The pathogenicity of a recent isolate of Infectious bursal disease virus (IBDV), IR499, isolated from a nonvaccinated flock with 17.5 % mortality rate in susceptible SPF chickens, chickens embryos and broilers was discussed. The molecular characterization of the virus based on the restriction fragment length polymorphism (RFLP) pattern was also investigated. The mortality rates were 85% and 22%...

Enterococcus faecalis merupakan patogen oportunistik yang membentuk biofilm dengan menghasilkan gen virulen seperti gelE. Penelitian ini bertujuan untuk mengeksplorasi keberadaan gelE dan mengkaji korelasinya terhadap pembentukan pada isolat E. asal ayam. Sampel digunakan sebanyak 60 sampel arsip usap kloaka Isolasi identifikasi bakteri menggunakan media agar selektif diferensial KF Streptococc...

Susu sapi merupakan media pertumbuhan bakteri patogen maupun non patogen. Escherichia coli mrupakan salah satu yang sering ditemukan pada susu mentah. dapat menyebabkan mastitis radang usus serta masalah kesehatan manusia seperti diare, kolitis hemoragik dan sindrom uraemik hemolitik. Hemaglutinin hemolisin faktor virulen penting E. patogen, karena berperan sebagai adhesin, pertahanan terhadap ...

Salah satu daerah yang membudidayakan jagung secara terus menerus setiap musim di Manokwari adalah Kampung Copti Prafi. Kondisi ini menyebabkan mudahnya berkembang penyakit karat daun. Oleh karena itu, tujuan penelitian mengevaluasi intensitas serangan penyakit, laju perkembangan sifat ketahanan dan pengaruh faktor-faktor iklim terhadap penyakitnya daun tersebut. Analisa data dilakukan tabulasi...

An element $a$ in a ring $R$ is very clean in case there exists‎ ‎an idempotent $ein R$ such that $ae = ea$ and either $a‎- ‎e$ or $a‎ + ‎e$ is invertible‎. ‎An element $a$ in a ring $R$ is very $J$-clean‎ ‎provided that there exists an idempotent $ein R$ such that $ae =‎ ‎ea$ and either $a-ein J(R)$ or $a‎ + ‎ein J(R)$‎. ‎Let $R$ be a‎ ‎local ring‎, ‎and let $sin C(R)$‎. ‎We prove that $Ain K_...