Béri, Béla

Kovács, Sándor

Peles, Ferenc

Szabó, András

Acta Microbiologica et Immunologica Hungarica

English

University of Debrecen Electronic Archive

COMPARATIVE ANALYSIS OF FACTORS INFLUENCING TOTAL PLATE 
COUNT OF RAW MILK IN SOME DAIRY FARMS IN HUNGARY 
 
*Ferenc Peles1, Sándor Kovács2, Béla Béri3, András Szabó1
 
1 Institute of Food Processing, Quality Control and Microbiology, Centre of Agricultural 
Sciences, University of Debrecen, Böszörményi u. 138, H-4032 Debrecen, Hungary 
2 Department of Economic Analysis and Statistical Sciences, Centre of Agricultural Sciences, 
University of Debrecen, Böszörményi u. 138, H-4032 Debrecen, Hungary  
3 Department of Animal Husbandry, Breeding and Nutrition, Centre of Agricultural Sciences, 
University of Debrecen, Böszörményi u. 138, H-4032 Debrecen, Hungary 
 
The milk processing plants and dairy farms are interested in the production of basic 
material (raw milk) of good quality. The importance of the quality of raw milk increased after 
Hungary had joined to the EU. The 1/2003. (I. 8.) FVM-ESZCSM order prescribes strict 
conditions about food hygiene and quality of handling and distribution of raw milk. On 
delivery of raw milk, the microbiological quality, especially total plate count of the milk is 
very important. Dairy farms have to produce raw milk of extra quality, because the milk 
processing plants do not take accept raw milk of other quality.  
The aim of our research was to examine the connection between the total plate count in 
bulk tank milk and housing and milking technologies of twenty-two farms of different-sizes. 
According to the instruction of the MSZ ISO 6610 standard to examine the total plate 
count of the bulk tank milk, we used TGE-agar and aerob incubation at 30oC for 72±3 hours. 
We examined the relation using various statistical methods. For the statistical analysis of the 
relation between total plate count and each factor, in the case of two variables we used t test 
or nonparametric Mann-Whitney test. In the case of three variables, we used analysis of 
variance (ANOVA) or Kruskal-Wallis test. First we examined the factors which influence the 
total plate count by binary logistic regression, and after this, supported by the results we used 
loglinear model.  
During the examination of the effect of different factors on total plate count of bulk tank 
milk, we found that the mean total plate count is significantly higher (P<0.001) in farms 
which use tie-stall housing forms, bucket milking, udder preparation with water, and which do 
not use pre- and post-milking disinfection. 
The results showed that besides cooling, the milking procedure and the type of udder 
preparation had the largest effect on the total plate count. During the loglinear statistical 
analysis we found that the combination of pipeline milking – tie stall housing system – 
disinfectant preparation of the udder, and that of milking parlour - loose cubicle housing 
system - dry preparation of the udder are the most appropriate in the aspect of the total plate 
count.  
 


Comparative analysis of factors influencing total plate count of raw milk in some dairy farms in Hungary

https://dea.lib.unideb.hu/dea/bitstream/2437/3485/1/Comparative%20analysis.pdf

Comparative analysis of factors influencing total plate count of raw milk in some dairy farms in Hungary

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