Özet:

The aim of this study is to investigate nutrient variations in TMR (Total Mixed Ration) rations prepared according to the physiological conditions and requirements of for different animals on the dairy herd farm and to evaluate whether the nutrient components comply with the target values, within the scope of the study "Variation Comparison of Theoretically Prepared Diets to The Diets Practically Served to Cattle Using Six Sigma Methods". The first stage of the study was carried out on a apartment farm with ≈1500 heads milking cows capacity. Nutrient chemical analyzes and particle you assessments were carried out in the TMR samples collected in different days, including milking cows, heifers, close up cows, calfs, and beef cattle groups on this apartment farm. Within this scope, 130 TMR samples milking cows and other groups (heifers, close up cows, calfs, beef cattle) 64 (4x16) samples were analyzed. In addition, nutrient analysis of the raw materials used for the preparation of TMR was carried out individually. In this study, on three different apartment farms, 30 milking TMR samples (3X10) collected on different days were evaluated for the same purpose. It was assessed that the nutrient values calculated in the TMR mixtures and the nutrient values determined in the chemical analysis were incompatible and nutrient values were found to vary with time. It was also found that the particle size of the samples taken at different times in the TMR samples significantly varied. For this reason, it is considered that the compatibility of the nutrient values determined by calculation with the chemical analysis results in the preparation of the ration can contribute positively to the productivity and profitability of the apartment farm in terms of both economic sense and animal performance.

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