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Journal of Animal and Veterinary Advances
Year: 2007  |  Volume: 6  |  Issue: 2  |  Page No.: 215 - 216

Effect of Storage Conditions on the pH of Blackleg Vaccines

M.Y. Sugun, G. Haruna, E.O. Irokanulo, A. Zakari and N.M. Useh    

Abstract: Six batches of blackleg vaccines produced at the National Veterinary Research Institute (NVRI), Vom, Nigeria were stored at different temperatures for varying durations in amber and transparent bottles and pH values were observed to be lowered (in the transparent bottles), even at the recommended shelf life of the vaccines. Since the use of transparent bottles for packaging blackleg vaccines was accompanied by a drastic change in pH compared to amber coloured bottles, it is suggested that the use of transparent bottles to package the vaccines should be discouraged. Also, prior to bottling, it is suggested that the pH should be adjusted to 7.7-8.0, to modulate any pH drops that may occur subsequently, during storage.

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