Studies On The Pathological Aspects Of Early Chick Mortality Due To Bacterial Infections
By: Raza ur Rehman
| Dr. Shakil Akhtar Khan.
Contributor(s): Dr. Shahzada Khurram Ashraf | Faculty of Veterinary Sciences.
Material type: 
BookPublisher: 1993Subject(s): Department of PathologyDDC classification: 0448,T Dissertation note: The present study was conducted to investigate the bacterial etiology in the early chick mortality in Punjab. For the purpose 500 dead chicks (1-2 weeks old) were collected and subjected to the bacteriological examinations.
Various media were used for the isolation, purification and identification of bacteria including MacConkey's broth, Selenite broth, S.S. agar, E.M.B. agar MacConkey's agar, Nutrient broth, Triple sugar iron agar, Blood agar, Mannitol salt.
The isolation of bacteria was done from heart, liver, spleen, yolk sac, intestine.
The standard techniques were used for biochemical and sugar fermentation reactions. The dead chicks were also examined for gross histopathological lesions.
Of 500 birds examined 56.8% birds yielded . cjj isolates followed by . pullorum (25.4%) and S. aureus (17.8%).
Sixty chicks suffering from Escherichia, Salmonella and Staphylococcus spp. infections (Twenty chicks positive for each genera) were selected for histopathological examination. The visceral organs (liver, lungs, heart, kidneys and spleen) showing characteristic lesions of diseases from 60 chicks were collected for histopathological study.
From the foregoing, it is evident that . cli, S. pullorum and S. aureus are major bacteria involved in early chick mortality. Therefore to avoid these infections, implementation of hygienic standards both at hatchery and brooder house, strict vaccination schedule; practice of disinfections, proper husbandry practices, testing of parent flocks for carriers, and finally strict quarantine measures are suggested.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode | Item holds |
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 0448,T (Browse shelf) | Available | 0448,T |
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The present study was conducted to investigate the bacterial etiology in the early chick mortality in Punjab. For the purpose 500 dead chicks (1-2 weeks old) were collected and subjected to the bacteriological examinations.
Various media were used for the isolation, purification and identification of bacteria including MacConkey's broth, Selenite broth, S.S. agar, E.M.B. agar MacConkey's agar, Nutrient broth, Triple sugar iron agar, Blood agar, Mannitol salt.
The isolation of bacteria was done from heart, liver, spleen, yolk sac, intestine.
The standard techniques were used for biochemical and sugar fermentation reactions. The dead chicks were also examined for gross histopathological lesions.
Of 500 birds examined 56.8% birds yielded . cjj isolates followed by . pullorum (25.4%) and S. aureus (17.8%).
Sixty chicks suffering from Escherichia, Salmonella and Staphylococcus spp. infections (Twenty chicks positive for each genera) were selected for histopathological examination. The visceral organs (liver, lungs, heart, kidneys and spleen) showing characteristic lesions of diseases from 60 chicks were collected for histopathological study.
From the foregoing, it is evident that . cli, S. pullorum and S. aureus are major bacteria involved in early chick mortality. Therefore to avoid these infections, implementation of hygienic standards both at hatchery and brooder house, strict vaccination schedule; practice of disinfections, proper husbandry practices, testing of parent flocks for carriers, and finally strict quarantine measures are suggested.
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