Changes

Jump to navigation Jump to search
2,158 bytes added ,  12:00, 30 December 2008
no edit summary
Line 51: Line 51:       −
===Clinical infections===
+
===[[Respiratory Bacterial Infections - Pathology#Contagious bovine pleuropneumonia (CBPP)|Contagious bovine pleuropneumonia]]===
 +
 
 +
*[[Respiratory Bacterial Infections - Pathology#Contagious bovine pleuropneumonia (CBPP)|Contagious bovine pleuropneumonia]] is caused by ''M. mycoides'' subsp. ''mycoides''
 +
*A severe contagious disease of cattle
 +
*Endemic in Africa, the Middle East and Asia
 +
*Aerosol transmission by close contact with clinically or subclinically affected animals
 +
*Severity depends on strain and host susceptibility
 +
*Slow spread of infection
 +
*50% morbidity; mortality rate high in severe outbreaks
 +
 
 +
*Clinical signs
 +
**Acute onset fever, anorexia, depression, lowered milk yield, hyperpnoea, coughing and a mucopurulent nasal discharge
 +
**Dyspnoea occurs with abducted elbows and extended necks and an expiratory grunt
 +
**Can be fatal within 1-3 weeks
 +
**Calves may suffer from [[Joints Inflammatory - Pathology#In Cattle|arthritis]], synovitis and endocarditis
 +
 
 +
*Gross pathology
 +
**Marbled appearance to lungs with consolidated grey and red lobules separated by emphysematous areas
 +
**Serofibrinous pleural fluid
 +
**Necrotic foci surrounded by fibrous capsules in chronic cases act as source of infection
 +
 
 +
*Diagnosis
 +
**Clinical signs and post-mortem appearance
 +
**PCR on pleural fluid, lung tissue, regional lymph nodes or bronchoalveolar lavage fluid
 +
**Fluorescent antibody test
 +
**Serological tests such as serum agglutination, haemagglutination, complement fixation, ELISA
 +
 
 +
*Treatment and control
 +
**Slaughter of affected cattle in counries where the disease is exotic
 +
**Movement restrictions, quaranteen and slaughter of carrier animals in endemic countries
 +
**Vaccination in endemic regions
 +
 
 +
 
 +
===''Mycoplasma bovis''===
 +
 
 +
*Causes severe pneumonia in calves as a primary pathogen
 +
*Can occur secondarily to ''Pasteurella'' and ''Mannheimia'' and [[Respiratory Viral Infections - Pathology#In Cattle|IBR]]
 +
*Associated with [[Joints Inflammatory - Pathology#In Cattle|arthritis]] and mastitis
 +
*Mastitis associated with a severe drop in milk yield and a purulent discharge
 +
 
 +
 
 +
===Contagious agalactia of sheep and goats===
 +
 
 +
*Severe febrile disease of sheep and goats in parts of Europe, Africa, Asia
 +
*Caused by ''M. agalactiae''
 +
*Mastitis, arthritis and conjunctivitis following parturition
 +
*Causes abortion
 +
*Fatal pneumonia in young animals
 +
*Shed in milk; localised in supramammary lymph nodes
 +
*Inactivated, attenuated vaccines available
 +
 
 +
 
 +
===Contagious caprine pleuropneumonia===
 +
 
 +
 
   −
*
         
*Cause [[Peritoneal Cavity Inflammatory - Pathology#In sheep|peritonitis in sheep]] and [[Peritoneal Cavity Inflammatory - Pathology#In goats|peritonitis in goats]] and [[Peritoneal Cavity Inflammatory - Pathology#In pigs|peritonitis in pigs]]
 
*Cause [[Peritoneal Cavity Inflammatory - Pathology#In sheep|peritonitis in sheep]] and [[Peritoneal Cavity Inflammatory - Pathology#In goats|peritonitis in goats]] and [[Peritoneal Cavity Inflammatory - Pathology#In pigs|peritonitis in pigs]]
*Can be secondary to [[Respiratory Viral Infections - Pathology#In Cattle|IBR]]
   
*[[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of pigs|Enzootic pneumonia of pigs]] caused by ''M. hyopneumoniae'' and ''M. hyorhinis''  
 
*[[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of pigs|Enzootic pneumonia of pigs]] caused by ''M. hyopneumoniae'' and ''M. hyorhinis''  
*[[Respiratory Bacterial Infections - Pathology#Contagious bovine pleuropneumonia (CBPP)|Contagious bovine pleuropneumonia]] caused by ''M. mycoides''
   
*''M. bovis'', ''M. dispar'' and ''Ureaplasma'' in [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
 
*''M. bovis'', ''M. dispar'' and ''Ureaplasma'' in [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of calves|Enzootic pneumonia of calves]]
 
* May cause [[General Pathology - Chronic Inflammation#Lymphocytic Inflammation|lymphocytic chronic inflammation]] (peribronchiolar and perialveolar cuffing).
 
* May cause [[General Pathology - Chronic Inflammation#Lymphocytic Inflammation|lymphocytic chronic inflammation]] (peribronchiolar and perialveolar cuffing).
Line 65: Line 116:  
*''M. ovipneumoniae'' in [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of lambs|enzootic pneumonia of lambs]]
 
*''M. ovipneumoniae'' in [[Respiratory Bacterial Infections - Pathology#Enzootic pneumonia of lambs|enzootic pneumonia of lambs]]
 
*''M. hyosynovia'' and ''M. hyorhinis'' produce syndrome similar to [[Haemophilus species|Glasser's disease]] with milder expression, menigitis rare, [[Joints Inflammatory - Pathology#In Pigs|arthritis]] most consistent
 
*''M. hyosynovia'' and ''M. hyorhinis'' produce syndrome similar to [[Haemophilus species|Glasser's disease]] with milder expression, menigitis rare, [[Joints Inflammatory - Pathology#In Pigs|arthritis]] most consistent
*In cattle [[Joints Inflammatory - Pathology#In Cattle|arthritis]]
 
462

edits

Navigation menu