Influence of genotypic factors on the somatic cell content in cows milk

The somatic cell content in milk is one of the most important indicators of milk quality, which is used to judge the state of mammary gland health cow and the organism of the animal as a whole. The aim of the research was to study the influence of genotypic factors on somatic cell content in cows milk. Scientific studies were carried out at JSC «Berezovskoye», Kuraginsky District, Krasnoyarsk Territory on Red-Motley cows. The line and the bull-father were genotypic factors; the object of the research was Red-Motley cows at third lactation age. Milk samples to determine the somatic cell content were taken from each experimental cow. The somatic cell content in milk of cows was determined in the quality of milk selection control laboratory of LLC Sayanmoloko on the Fossomatic FC analyzer. As a research result, no significant influence of genotypic factors on somatic cell content in milk of cows was established. However, when characterizing cows as a whole along the lines and the fathers, it was revealed the smallest somatic cell content was in the Vis Back Ideal line cows (528.7 k cells/ml) and in cows-daughters of Dinar bull (38.8 k cells/ml). The cows of the analyzed lines exceeded the requirements of GOST 31449-2013 to this indicator by 128.7-478.9 k cells/ml, as well as for bulls' daughters of Dubl' and Format of Vis Back Ideal line, Den' and Taylor of Reflection Sovereign line by 64.8-948.2 k cells/ml). The correlation between the somatic cell content in milk and indicators of milk production and body weight was not reliable either.