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Evaluation of bacteriological tests on refrigerated farm bulk milk as indices of milking shed hygiene



Evaluation of bacteriological tests on refrigerated farm bulk milk as indices of milking shed hygiene



Aust J Dairy Technol 22(4): 217-219



An investigation was carried out on farm-refrigerated milks to determine the value of 5 different bacteriological tests in assessing the level of hygiene of milk production. The survey covered 100 farms in the Colac district of Victoria. The level of hygiene was assessed by 4 different scores which covered milking procedures and shed cleanliness at the time of sampling and also the farm's previous record. Correlation coefficients and regression equations for each score against each count indicated that the best index of farm cleanliness and hygiene was the total plate count which had significant correlations with all farm scores. The laboratory pasteurization count and the thermoduric' count gave almost identical results, and also had highly significant correlations with the observed conditions of production. The other 2 bacteriological tests were the pre-incubated methylene blue reduction test, and the coliform test. The significance of the correlations with these tests was very much lower.

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Accession: 024638840

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