The effect of udder washing on the quality of sheep milk

MALÁ, G., NOVÁK, P. & KNÍŽEK, J. Vliv toalety vemene na kvalitu ovčího mléka . In Přívorovy dny, XI.konference DDD - 2014. Praha: Sdružení DDD, 2014, s. 88-100.{INTLINK}
MALÁ, Gabriela, NOVÁK, Pavel a KNÍŽEK, Josef., 2014 The effect of udder washing on the quality of sheep milk. In Přívorovy dny, XI.konference DDD - 2014. Praha: Sdružení DDD, s. 88-100. ISSN
Year2014
CathegoryOthers
Internal link14061.pdf
Abstract

Using the cleaning and disinfecting process of the teat end is possible to reduce the microbial contamination of the surface of teats in dairy sheep. The aim of this study was to determine the effectiveness of two disinfectants used on the teats before milking and their influence on quality of sheep milk. The research included two groups of 20 ewes during one month. The teats of the first group of ewes were treated by aqueous solution of fatty alcohol ether sulfates (disinfectant I.) before milking , while the teats of the second group were treated by mixture of chlorhexidine digluconate, isopropanol, glycerol, surfactant, colorant and water (disinfectant II.). The microbiological contamination of the teat surface before and after disinfection was observed by using the swabs method. We proved the total bacterial count (TBC), the number of coliform bacteria (CB) and the number of Escherichia coli. At the same time, in individual milk samples we assessed the selected indicators of microbiological quality of milk (total bacterial count -TBC, coliform bacteria – CB and somatic cell count – SCC). The values were statistically evaluated by using analysis of covariance in Statistica. It was proved statistically significant reduction of microbial contamination of teats surface after using both disinfectants. Using the first disinfectant was achieved significantly lower total number of microorganisms on the teats surface before milking in comparison with using the second disinfectant. In contrast, statistical significant differences in the numbers of CB and E. coli on the teat surface were established. Microbiological analysis of selected indicators in sheep milk did not show statistically significant differences in TBC, CB and SCC.