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All Journal Jurnal Ilmu Ternak Veteriner WARTAZOA Indonesian Bulletin of Animal and Veterinary Sciences
Adin Priadi
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Veterinary

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Journal : Jurnal Ilmu Ternak Veteriner

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Infection of Ornithobacterium rhinotracheale (ORT) in chickens in Indonesia Adin Priadi; Lily Natalia
Jurnal Ilmu Ternak dan Veteriner Vol 11, No 1 (2006): MARCH 2006
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (205.548 KB) | DOI: 10.14334/jitv.v11i1.508

Abstract

Ornithobacterium rhinotracheale is a bacterium identified as a new species in 1994 and generally associated with respiratory distress in chickens. From 214 of sinus swabs, tracheal swabs, lungs, airsac, liver heart blood samples and yolk sacs of chickens suffered from respiratory distresses, 6 isolates of O. rhinotracheale were isolated. These isolates were obtained from tracheal swabs of broiler chickens aged between 28-35 days old and broiler breeder of 32 weeks old. Upon incubated on blood agar for 48 hours at 37oC in a 5% CO2 atmosphere, round, convect and grey colonies with diametres of 1-2 mm were observed. The bacteria were pleomorphic, Gram negative rods, negative catalase and positive oxidase. Biochemically, the bacteria did not change potassium nitrate, tryptophan, glucose, arginine, urea, esculin, gelatine, arabinose, mannose, mannitol, N-acetyl-glucosamine, maltose, gluconate, caprate, adipate, malate, citrate and phenyl-acetate in API 20 NE system but β –galactosidase was produced. In the API 20 NE system, the isolates were identified as 0020004, 0060004, 0020104 codes. Tracheitis, air sacculitis, pneumonia and cheesy air sacs were pathological changes generally found in chickens infected with O. rhinotracheale. Trachea is the most important organ for the isolation of O. rhinotracheale. Key Words: Ornithobacterium rhinotracheale, Infection, Chicken, Indonesia
Clostridial necrotic enteritis in chicken associated with growth rate depression Adin Priadi; Lily Natalia
Jurnal Ilmu Ternak dan Veteriner Vol 13, No 1 (2008): MARCH 2008
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.933 KB) | DOI: 10.14334/jitv.v13i1.595

Abstract

Clostridium perfringens (C. perfringens) is a normal inhabitant of the intestinal tract of chickens as well as a potential pathogen causing necrotic enteritis. C. perfringens only causes necrotic enteritis when it transforms from non-toxin producing type to toxin producing type. The alpha toxin, (phospholipase C) is believed to be a key to the occurrence of Clostridial necrotic enteritis (CNE). The best known predisposing factor is mucosal damage, caused by coccidiosis that damages the intestinal lining, making the gut susceptible to infections including C. perfringens. The purpose of this study was to observe the chicken performance in experimental CNE and field cases of CNE. Diagnosis of CNE were made by latex agglutination test, isolation and identification of the agent. Pathological and histopathological changes were also observed. Experimentally, NE could be reproduced when Eimeria sp and C. perfringens spores are inoculated in chicken. Signs of an NE are wet litter and diarrhea, and an increase in mortality is not often obvious. The depression of growth rate and feed efficiency of chicken become noticeable by week 5 because of damage to the intestine and the subsequent reduction in digestion and absorption of food. Subclinical form of CNE was also frequently found in the field, leading to significant decreases in performance. Chicken gut samples examinations revealed that subclinical form of CNE causes damage to the intestinal mucosa caused by C. perfringens leads to decreased digestion and absorption, increased feed conversion ratio and reduced weight gain. Dual infection with C. perfringens and Eimeria sp. was frequently found in field. The results of these studies provide evidence for C. perfringens as a causative bacteria for growth depression. Key Words: Clostridial Necrotic Enteritis, Chicken, Growth Depression
Co-Authors L Natalia L Natalia Lily Natalia Rahmat S. Adji S Poernomo Sri Poernomo Sri Poernomo Suhardono . Suhardono .