Occurrence of botulism due to consumption of bread waste mixed with meat pieces in feedlot cattle in suburb of Tehran

Subject Areas : Internal medicine of large animals

Peyman Dehghan Rahimabadi ¹ , Diba Golchin ² , Babak Bastani ³ , Amin Anoushepour ⁴ , Javad Abbasi ⁵ , Hasan Asgari Rad ⁶

1 - Department of Clinical Sciences, Karaj Branch, Islamic Azad University, Karaj, Iran
2 - Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
3 - Wildlife Conservation Veterinarian, Headquarter of Department of Environment, Tehran, Iran
4 - Department of Veterinary Medicine, Karaj branch, Islamic Azad University, Karaj. Iran
5 - Department of Animal and Poultry Health and Nutrition, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
6 - Private Veterinarian, Varamin, Iran

Received: 2022-12-18 Accepted : 2023-08-06 Published : 2023-09-19

Keywords: Tehran, Botulism, Clostridium botulinum, Feedlot cattle, Bread waste containing of meat,

Abstract :

In August 2020, 10 feedlot cattle were presented with weakness of the hind limbs, ataxia and incoordination, paralysis, and eventually sternal recumbency, on a farm in the suburban area of Tehran. Hypothermia, ruminal hypomotility, constipation, tongue paralysis, hypersalivation, paralysis of the tail and anus sphincter, bradycardia and arrhythmia were recorded in clinical examination. Necropsy revealed severe impaction in the forestomaches, and endocardial hemorrhage. 0.5 ml of gastrointestinal contents of affected cattle was administered to three mice, via intraperitoneal route. Signs of botulism were noticed following the injection; hence the diagnosis was confirmed. Microscopic examination revealed nonspecific histopathologic changes in different organs including heart, lungs, kidneys, liver, and abomasum. Analysis of the ingested feed confirmed the presence of meat pieces mixed with bread waste, which provides an excellent environment for C. botulinum spores to germinate and produce toxins. Eventually, after 45 days of botulism outbreak, a total number of 98 affected cows were slaughtered and the carcasses were destroyed according to guidelines issued by Iran Veterinary Organization.

 

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