The Change in Blood Parameters with Age in Holstein Calves

Blood parameters have been used for various purposes in animal husbandry. Studies have been focused on becoming an important tool in individual animal or herd monitoring. In previous studies, standard values for biochemical and hematological variables were emphasized. However, factors such as sample size, breed, season, and age caused big variation in results. Therefore, in this study, total protein, albumin, urea, BUN, BHBA, NEFA, total cholesterol, ALT, AST, GGT, Ca, P and Mg values were studied in healthy Holstein male calves born in the same season under the same farm conditions. As a result, total protein, albumin, urea, BUN, BHBA, NEFA, total cholesterol, ALT, AST, GGT, Ca, P and Mg values in healthy Holstein male calves 6.94 ± 0.07 (g / dl), 2.98 ± 0.09 (g / dl), 30.00 ± 0.99 (mg / dl), 14.01 ± 0.46 (mg / dl), 0.78 ± 0.09 (mmol / L), 0.39 ± 0.05 (mmol / L), 173.19 ± 7.55 (mg / dl), 28.49 ± 1.50 (U / L), 85.05 ± 2.64 (U / L) , 28.01 ± 3.20 (U / L) 8.73 ± 0.12 (mg / dl), 6.01 ± 0.44 (mg / dl), 2.14 ± 0.04 (mg / dl ) has been determined. The difference between the total protein, albumin, urea, BUN, BHBA, NEFA, total cholesterol, ALT, AST, GGT, Ca, P and Mg values obtained as a result of the study by months was not statistically significant. Keywords: calf production, rearing, blood, period, criteria, DOI: 10.7176/JSTR/7-09-04