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Relationship between Blood Metabolic Hormones, Metabolites and Energy Balance in Simmental Dairy Cows during Peripartum period and Lactation
Radojica Djoković1*, Marko Cincović2, Branislava Belić2, Bojan Toholj2, Ivana Davidov2 and Talija Hristovska3
1Department of Animal Science, Faculty of Agronomy, Čačak, University of Kragujevac, Cara Dusana 34, 32000 Čačak, Serbia; 2Department of Veterinary Medicine, Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, Novi Sad 21000 Serbia; 3Faculty of Veterinary Science, University of Bitola, Bitola  R. Macedonia
*Corresponding author:


The objective of the present study was to investigate the metabolic and endocrine  status in Simmental dairy cows during peripartum period and mid lactation based on the relationships between blood growth hormone (GH), insulin, triiodothyrinine (T3), thyroxine (T4), glucose, beta-hydroxybutyrate (BHB), non-esterified fatty acids (NEFA), total lipid (TL), triglycerides (TG), total cholesterol, total protein (TP), albumin (ALB), urea and energy balance (EB). Fifteen late pregnant, 15 early lactation and 15 mid lactation cows were chosen for the analysis. Blood metabolic hormones, metabolites and EB were recorded. Early lactation cows had higher serum concentrations of GH, NEFA, BHB, TL and lower blood serum concentrations of T3, glucose, TG, total cholesterol, albumin and urea compared to late pregnant and/or mid lactation cows (P<0.05). Correlations between most hormones and metabolites were dependent (P<0.05) on the EB of cows, but this factor becomes unimportant under certain circumstances, depending on lactation period. Accordingly, correlations between insulin, BHB or NEFA and other parameters were not solely dependent on the EB, which may be associated with insulin resistance and fatty liver developing in cows.

Key words: Correlation, Dairy cows, Energy balance, Metabolic hormones, Metabolites


ISSN 0253-8318 (Print)
ISSN 2074-7764 (Online)