PROTEIN COMPOSITION OF SERUM AND ITS CONECTION WITH LIVE WEIGHT OF HEIFERS UKRAINIAN BLACK AND WHITE DAIRY BREED
M.I. Kuziv
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Institute of Animal Biology NAAS; 38 V. Stusa St, Lviv, 79034, Ukraine
An important measure of efficiency in cattle breeding work is the application along with traditional methods of breeding assisted biological tests. Protein serum indicated a low degree of variability, which indicates high genetic predetermination. Exploring the relationship of serum total protein with a live weight of animals during growth will let effectively use them to predict performance.
Studies of heifers Ukrainian black and white dairy breed in 3-; 6-; 9-; 12-; 15- and 18-months of age were conducted in the dynamics. In these age periods studied total protein in serum and its fractional composition and their relationship with live weight of heifers.
Found that with age heifers total protein in serum and increased from 3- to 18-month old, this figure increased to 14.71 g/l(P<0.001). Globulin content increased with the age of the animals, and the content of albumin was undulating character. The ratio of albumin to globulin in 3- and 6-months of age animals were almost identical and amounted to 1.01 and 1.0 respectively. In subsequent ages, this figure declined.
Coefficient of variation of total protein in serum of heifers at different ages ranged from 2.9 to 4.7 %, indicating a high level of constancy of this feature.
Between total serum protein and live weight of heifers a positive correlation was found. The correlation coefficient between these parameters was highest at 3 months of animals age and was 0.48 (P<0.001), in other ages it ranged from 0.2 to 0.354.
Keywords: BREED, HEIFERS, BLOOD, TOTAL PROTEIN SERUM, PROTEIN FRACTIONS, LIVE WEIGHT, THE CORRELATION COEFFICIENT
