Nephritis

Consider mycotoxicosis

May be water intake deficiency, IBD or mycotoxin

You have also to think about IB infection

In case of infection with nephrotropic IB strain , the kidneys of affected birds are pale, mottled, and can be 2 to 3 times their normal size. Urates are common and can be identified easily in the kidneys and ureters at necropsy

Why not IBH? CARNIFORCYL15ML/100BIRDS FOR 5DAYS IS EFFECTIVE treatment.

I will certainly consider infection with nephrotropic strain of infections bronchitis virus. Histopathology will be helpful. PCR on kidneys for definitive diagnosis. Join the Facebook group "Avian Pathology and Poultry Diseases": https://www.facebook.com/groups/2253684654721445/

I suspect a special strain of IB that infects the kidney or Mycotoxin.

Yes

The are several publications related to nepheritis with QX IBV strain wre published . e.g. Sigrist B., K. Tobler, M. Schybli, L. Konrad, R. Stöckli, G. Cattoli, D. Lüschow, H. M. Hafez, P. Britton, R.K. Hoop and A. Vögtlin (2012). Detection of Avian coronavirus infectious bronchitis virus type QX infection in Switzerland. Journal of Veterinary Diagnostic Investigation 24(6) 1180–1183.

IB, GOUT, WATER DEPRIVATION

In cases like this it is important to do IBV PCR on kidneys.

From the picture there is cystic beside bursa, check IB infection

Managemental and disease can be significant factor. 1 water deprivation 2;feed toxicity 3,nephrophthogenic strain of Ib. Treatment should be accorsing to diagnosis.

Pale , inflammed and hemorrhagic liver and kidneys are mostly seen in case of IBH and/or Mycotoxicosis. But Finally PCR is helpful, As you can see such lesions in case of Avian Astrovirus infection, Nephropathogenic IB, Chicken Infectious Anemia, Sulphonamide toxicity, Dehydration and Pullorum Disease.

Agree with you all. Check pathogenic IB like: 793 B, Var 2, Qx, Q1.

Nephrogenic form of IB, mycotoxin(ochratoxin) visceral gout due to water deprivation, Vitamin A deficiency, streptomycin toxicity(high doses of it) could all precipitate kidney lesion

Appears to be nephrosis which might be related to either mycotoxins or infectious agents. Histopath can reveal the condition

Check Adenovirus