Abstract
The trends of the physicochemical properties, chemical constituents and main nitrogen fractions of Haflinger mare milk were studied. Milk samples were collected at d 4, 20, 40, 60, 80, 120, 150 and 180 post-partum, by hand-milking from 5 mares, 7-14 years old (4-11 parities) and 400-490 kg live weight. Density, pH, titratable acidity, fat, protein, lactose and ash varied significantly during the first lactation period, while the freezing point showed statistically no significant modifi- cations. The contents of fat, protein and ash diminished. In addition, the gross energy value tended to decrease and the lactose content increased. Total N content decreased significantly ( P 0.05). Haflinger horse / nursing mare / lactation stage / milk properties / milk composition / nitrogen fractions
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