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Milk fat content stands out as a crucial production trait in cows, and this study delves into its variability based on various factors. The research investigated how the housing method (large farm or individual producers), origin (domestic-rearing or imported cows), and calving season collectively impact this trait. Cows reared on the farm exhibited a higher milk fat content compared to those raised by individual producers. Additionally, primiparous cows from domestic rearing displayed lower milk fat content than their counterparts of imported origin. Among primiparous cows on the farm, those calving in the summer and autumn produced the highest milk fat content. Conversely, primiparous cows calving in the spring season and raised by individual producers recorded the lowest milk fat content. The statistical analysis revealed a highly significant influence of calving season, with a noteworthy interaction among housing method and origin on the observed trait. The significance ranged from statistically highly significant (P ≤ 0.01) to statistically very highly significant (P ≤ 0.001).