Evaluation of microbiological quality of colostrum
2019
Baltrukova, S., Institute of Food Safety, Animal Health and Environment „BIOR”, Riga (Latvia);Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Food Technology | Zagorska, J., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Food Technology. Dept. of Food Technology | Eihvalde, I., Latvia Univ. of Life Sciences and Technologies, Vecauce, Vecauce Parish, Auce Municipality (Latvia). Research Study Farm “Vecauce”
Bovine colostrum is an important source of different biologically active compounds: immunoglobulins, lactoferrin, lysozyme, lactoperoxidase etc., therefore vital for a dairy calf’s ability to survive. There is the lack of information about microbiological quality of colostrum. Still it is very important parameter, which can be significant for calf mortality and antibodies absorption rate, the aim of the study was to evaluate microbiological quality of colostrum obtained from Latvian cows. Colostrum samples (n=20, 50 mLE-1 ) were collected in conventional farm with 500 cows (Zemgale, Latvia) during December 2018 to January 2019 one hour after calving. Samples were immediately frozen (-19±1 °C, within 30 min) and delivered to the laboratory. The colony forming units (LVS EN ISO 4833-1:2013) and presence of β-glucuronidase positive Escherichia coli (LVS EN ISO 16649-2:2007) were detected in colostrum samples. Descriptive statistics were used for data analysis. The average total plate count of analysed colostrum samples was 5.62 log CFU mLE-1, colony forming units ranged from 4.97 to 5.90 log CFU mLE-1. In the current research β-glucuronidase positive Escherichia coli CFU ranged from greater than 1 to 8300 mLE-1 in colostrum sample. Research results associated with low antibodies absorption rate by calf and high risk of diarrhoea in the farm.
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