Relevance of serum concentrations of non-esterified fatty acids and verylow-density lipoproteins in nulli/primiparous and multiparous cows in the close-upperiod

[摘要] Serum concentrations of non-esterified fatty acids (NEFA) and very low-densitylipoprotein (VLDL) in close-up dairy cattle were compared in relation to parity. Data wereobtained from 37 nulli/primiparous (NP) and 24 multiparous (MU, parity 2–7) cows between14 days and 1 day prepartum. A positive correlation (r=0.684, P<0.01)was found between serum NEFA and VLDL concentrations in NP cows. Among the VLDLconstituents, the NEFA concentration was particularly correlated with the triglyceride(TG) concentration (r=0.658, P<0.01). However, no significantcorrelation was found between the concentrations of NEFA and VLDL or VLDL-TG in MU cows(r=−0.028 and 0.307). These results suggest the presence of higher hepatic secretion ofNEFA-derived VLDL in NP cows.

[学科分类] 兽医学

[关键词] cattle;non-esterified fatty acids (NEFA);parity;very low-density lipoprotein (VLDL)