Tuesday 12 July 2011

Infectious Bursal Disease.....Gumboro


                                             Infectious Bursal Disease.....Gumboro



                                               Infectious Bursal Disease.....Gumboro
                                                           Depressed and Debilitated Bird



                                             Infectious Bursal Disease.....Gumboro
                                                   postmortem lesions
                                               

Monday 11 July 2011

Treatment of Infectious Bursal Disease/ Gumboro

infetious bursal disease is highly contagious disease of young chicken and causes 60- 80% mortality. it is unbearable loss for poultry farmers. regarding treatment there is no specific treatment of gumboro however in natural herbs there are some medicinal plants that have magicly effects on gumboro disease. these plants are as follos:

Allium sativum
Arnica montana
Cannabis Sativa
Cannabis Sativa
Glycyrrhiza glabra
Hydrastis canadensis
Hypericum perforatum

Saturday 9 July 2011

Treatment Of IBD

Gumboro is successfully being treated with
                               

                                   GOMBOHIT
AVAILABLE FROM PAKISTAN
CONTACT:
visitusman@yahoo.com

IBD Symptoms and Lesions



Severity of symptoms and lesions is dependant on the virulence of the infective virus, type of bird (layer or meat-type) and the immune status of the infected bird. Acute and sub clinical IBD are distinguished.

Acute Clinical IBD

  • Sudden onset of disease.
  • Infected birds are depressed, have ruffled feathers, droopy appearance and may be seen pecking at the vent.
  • Morbidity and mortality begins 3 days post infection, peaks and recedes in a period of 5 -7 days.
  • Mortality may be negligible or as high as 90% in case of very virulent IBDV. The more common scenario is mortality of 10 – 20%.
  • In the field situation the mortality in layer type birds is generally higher than in meat type birds.
  • Birds that die are usually dehydrated (causing kidney lesions).
  • Frequently petechial haemorrhages are present in the thigh and pectoral muscles.
  • Haemorrhages and erosions may be present at the juncture of the proventriculus and gizzard.
  • Bursal lesions are variable depending on the progress of the disease. Expected changes that may occur are tabulated below.
Gumboro disease: Summary of expected changes in bursal size, weight and morphology
Days post infectionSizeMorphology
2 - 3Bursa increases in size and weightOedematous with gelatinous yellow transudate covering serosal surface.
Colour changes from normal white to a cream colour. Petechial to extensive haemorrhaging may be present.
4Bursa double the normal weight and size
5Bursa returns to normal weightTransudate and oedema disappear. Bursa turns a grey colour.
8Bursa 1/3 of original weight
Variant IBDV strains do not cause as severe an inflammatory response. However severe bursal atrophy is characteristic and mortality is usually less than 5%.
Very virulent IBDV strains cause severe lesions in other lymphoid organs such as the thymus, caecal tonsils and spleen in addition to bursal lesions.
Normal bursa and atrophied bursa post IBDV infection
Normal bursa and atrophied bursa post IBDV infection
Bursas after IBDV infection
Bursas from Left to Right:
  1. Acute stage. Enlarged oedematous bursa
  2. 5 days post infection bursa returns to normal size.
    May be haemorrhagic as in this specific bursa
  3. 8 days post infection bursa atrophied and up to 1/8 of normal size

Subclinical IBD

  • Subclinical IBD occurs when chickens are exposed to IBDV during the first two weeks post hatch and have sufficient maternal antibody at time of infection to prevent clinical disease but not viral replication in the bursa.
  • Characterised by bursal atrophy, immunosuppression and resultant increased susceptibility to secondary infections (such as E. coli).
  • No peak mortality as evidenced with clinical IBD.
  • Secondary infections in broilers, mainly E. coli, result in a continuous above standard daily mortality and poorer feed conversions.
  • Due to immunosuppression there can be a poor response to subsequent vaccinations.

The IBD Virus



  • Small, non-enveloped double stranded RNA virus.
  • Family: Birnaviridae.
  • Very stable hardy virus.
  • Able to withstand a wide pH range (pH 2-12).
  • Heat stable (still viable after 30 minutes at 60°C).
  • High level of resistance to most commonly used disinfectants.
  • Survives in the poultry house environment for extended periods of time.

Gumboro Disease..... IBD - overview


Infectious Bursal Disease (IBD), or Gumboro Disease, is a viral disease affecting young chicken's. The disease has a worldwide prevalence. The target organ of the virus is the Bursa of Fabricius, an important organ in the young chickens developing immune system.
The economic impact of an Infectious Bursal Disease Virus (IBDV) infection is twofold:
  1. Direct mortality that can reach levels in excess of 40%, and
  2. Secondary infections, due to a suboptimal immune system, having a negative impact on production efficiency.
The negative effects of IBDV can be successfully controlled byvaccination and implementing sound biosecurity prinicples

Friday 8 July 2011

Gumboro disease....an overview


Infectious Bursal Disease (IBD), or Gumboro Disease, is a viral disease affecting young chicken's. The disease has a worldwide prevalence. The target organ of the virus is the Bursa of Fabricius, an important organ in the young chickens developing immune system.
The economic impact of an Infectious Bursal Disease Virus (IBDV) infection is twofold:
  1. Direct mortality that can reach levels in excess of 40%, and
  2. Secondary infections, due to a suboptimal immune system, having a negative impact on production efficiency.
The negative effects of IBDV can be successfully controlled by three ways:
 implementing sound biosecurity prinicples
natureropathy