Vibriosis/campylobacteriosis, Biology


Vibriosis/campylobacteriosis


This is genital disease of cattle and sheep. The causal organism Campylobacter fetus is a gram negative, curved or spiral shaped bacteria having sometimes a longer form consisting of 4 or 5 coils. The organism is motile and needs low oxygen tension for growth. The saprophytic species can be differentiated from pathogenic ones on high tolerance of sodium chloride and glycerine for growth and certain biochemical tests. The organism is killed in 5 minutes at 580 C. It is easily destroyed by desiccation,  direct sunlight and standard disinfectants. The organisms are usually present in faeces, soil and water.


Transmission: Transmission occurs by coitus. The organisms are found in the preputial cavity of infected bulls. Mature cows and heifers also carry the infection for long periods. Infected bull and semen from an infected bull are important source of spread of the disease. The organisms survive at low temperature used in semen storage.


Symptoms: Infertility caused may become apparent only when the %age of pregnancies in a dairy herd is low. The infertility rate in heifers is more than in cows. Abortions usually occur between fifth and sixth month of pregnancy. Infected bulls show no symptoms and their semen is normal. Healthy bulls become infected during coitus with diseased cows. Often the infection results in permanent infertility. Among sheep the disease is characterized by abortion occurring towards the end of gestation. Usually abortion is preceded by vaginal discharge for several days. The aborted foetus is oedematous with petechial haemorrhages on serous surfaces and necrotic foci in the liver.


Diagnosis: A history of sterility or abortion may provide evidence of infection. The final diagnosis depends upon the examination of uterine exudate and stomach contents of the aborted foetus. In both the cases, the causal organisms can be demonstrated microscopically or culturally. Serological tests, like agglutination test using serum or the vaginal mucus of diseased cattle for approximately 2-12 months after infection are conducted. ELISA and Complement Fixation Test (CFT) are also used for diagnosis. The infected bull can be detected by inseminating virgin heifers and examining the heifer’s vaginal mucus after 3-4 weeks.


Treatment: The bulls can be treated by injecting antibiotic cream in the prepuce. There is no direct treatment of females.


Control: Abortion rate can be reduced by antibiotic therapy, and particularly by using chlortetracycline and concurrently with the development of specific immunity. Irrigation of uterus and prepuce with streptomycin is often effective. The use of killed vaccines may reduce the incidence of disease in a herd but does not eradicate the infection. The immunity is of short duration.

Posted Date: 9/17/2012 7:55:50 AM | Location : United States







Related Discussions:- Vibriosis/campylobacteriosis, Assignment Help, Ask Question on Vibriosis/campylobacteriosis, Get Answer, Expert's Help, Vibriosis/campylobacteriosis Discussions

Write discussion on Vibriosis/campylobacteriosis
Your posts are moderated
Related Questions
Mammalian Heart The division of heart and separation of systemic and pulmonary circulation is complete in birds and mammals. The structure of mammalian heart and also how the

Q. What are the main characteristics of the age pyramids of developed countries? In the stabilized human population the age pyramid has a narrower base since the reproduction r

explain the respiration that takes place in different organisms??

What are the target organs upon which insulin and glucagon act? Glucagon mostly acts upon the liver. Insulin acts in general upon all cells. Both also act upon the adipose tiss

Plot the amount of DNA in the nucleus of a spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of

Class Hirudinea - Classification of Coelom These are leeches. Number of body segments of these types of animals is fixed; usually there are 34 segments in a few groups there m

Ventilation of Tracheal System - Diffusion Gaseous exchange due to diffusion generally takes care of the oxygen needs of most small insects. Similarly fairly large but inactiv

Define Food Science as a Discipline and Modern Developments? As an undergraduate student you may have taken a course in food science and technology. Do you recall, what did the

Galactosemia Inability  of conversion of galactose  to glucose results in the accumulation of galactose in  the  blood  -  known  as galactosemia. The biochemical defect usuall

Define Reagents for Determination of the Iodine Number of Lipids? The following reagents are required to conduct this experiment. 1. Hanus solution (Iodine monobromide solut