The biochemical profile in cows with reproductive disorders

Abstract

Studies have been conducted in the Dancu Research and Development Station for Cattle Breeding, Iași County, dairy farm, on Romanian Frisean (BNR) cows. Investigations on the biochemical profile were made in cows with reproductive disorders and in clinically healthy cows at different stages of lactation. There were made groups of 10 cows: four experimental groups of cows with puerperal genital infections (E1), cows with chronic genital infections (E2), postpartum anestrus cows (E3), cows with repeated matings (E4) and three control groups of cows in lactation stage: early, 0-2 months (M1), advanced, 4-6 months, (M2) and late, 6-7 months (M3). Results showed some biochemical changes in relation to the type of reproductive disorders and the stage of lactation: in cows with puerperal genital infections (group E1), compared with M1 group, have been found elevated mean values of serum globulin (62.70 %) and serum enzymes - ALT (45.50 ± 0.2 U / l) and values below the species inferior limit of serum enzymes - AP (7.19 ± 2.2 U / l) and of phosphatemia. In cows with chronic genital infections (group E2), compared with M2 group, the biochemical prophile showed low levels of total serum protein (6.30 ± 0.64 to 9.14 ± 0.5 g / dl) (p <0.05), of serum urea (16.00 ± 0.3 mg / dl), alkaline reserve, calcium (8.9 ± 0.10, respectively, 11.42 ± 2.10 mg / dl) and of serum enzymes - AST, GGT and AP, indicating some liver and calciumphosphorus metabolism disorders, and elevated values to the species upper limit, in terms of cholesterol and serum enzymes – ALT. In cows with postpartum anestrus (E3 group), compared with cows in M2 group were found slightly higher average values of serum albumin (45.55 ± 0.4 to 40.0 ± 1.5), mean values that are above the species upper limit for the serum enzymes - ALT and low average values to the lower limit for serum urea, alkaline reserve, alkalin phosphatase and Ca/P ratio. In cows with repeated matings (E4 group), compared with M2 and M3 groups have been revealed decreased mean values of serum total protein (g/dl), (6,7±0,6 compared to 8,3±0,6, respectively 9,14±0,5), and increased values to the upper limit for serum albumin (%), (53,73±0,6 compared to 40,0±1,5, respectively 45,40±0,4), low values for serum ureea (7,3±0,2 mg/dl), blood glucose, alkaline reserve, alkaline phosphatase, calcemia, phosphatemia and increased values above the higher limit for serum enzymes – ALT (U/l) (67,4±3,6).