Palandöken Journal of Animal Sciences Technology and Economics

Abstract

: The objective of this study was to evaluate the effects of somatic cell count (SC) and milk urea nitrogen (MUN) on milk composition. The material of the research was the milk composition records of Brown cattle. Raw milk samples were analyzed automatically with the Bentleymerkim Nexgen Series Model 1 device. In the experiment, somatic cell count were not affected (P0.05) milk fat, milk protein, dry matter, but were affected significantly (P0.05) lactose and milk urea nitrogen. The lactose ratio was found to be lower in the group with SHS 300*103 compared to the other groups. On the other hand, Milk ure nitrogen were affected milk dry matter significantly (P<0.05); but were not affected milk fat, milk protein, lactose and somatic cell count (P>0.05). The fat ratio in milk was found to be lower (P<0.05) in cows with acidosis. On the other hand, both acidosis and ketosis caused a decrease in urea ratio in milk (P<0.01). In this study, SCC was found to be relatively high in Brown cattle, with 61% of cows in the potential risk or infected group. This shows that milking hygiene is not followed adequately in the herd. The analyzed milk samples, 61% contained low, 9% normal and 30% high levels of MUN. This situation can be interpreted as the rations are balanced in the herd and there is no feeding problem. It was determined that 16% of the cows within the scope of the research were caught in ketosis and 25% of them had acidosis. It was concluded that it would be beneficial to examine individual milk fat and protein content data at monthly intervals in order to eliminate possible malnutrition deficiencies in dairy cattle and to detect and prevent the harmful effects of negative energy balance early.