Changes in clinical and blood lipid metabolism parameters in Holstein dairy cattle during the transition period

Abstract

The transition period is a critical period in the production cycle of the dairy cow. This study aimed to describe the clinical and biochemical changes, particularly lecithin: cholesterol acyltransferase (LCAT) and apolipoprotein B-100 (ApoB-100), during the transition period in dairy cattle. It was conducted on Holstein dairy cattle (n=80) classified into control cows (n=61) and diseased cows (n=19). They belonged to dairy farms in Ebetsu city, Hokkaido area, Japan. Body condition score (BCS) was significantly reduced in postfresh control cows when they were compared to those of close-up control group. Serum LCAT and apoB-100 were remarkably increased (P<0.05) at close-up period control group when they compared with those in close-up period diseased one. LCAT activities were also remarkably increased (P<0.05) while apoB-100 showed no significant changes at postfresh control cattle when they were compared to their values at post-fresh diseased cattle. Although apoB-100 was within the normal physiological reference values in the control and diseased cattle, it was lower than physiological reference values in 9.83% of the control cattle and in 26.32% of the diseased group. Blood glucose and packed cell volume were still within the physiological reference range in all cows. The study concluded that LCAT activities were a highly sensitive diagnostic marker of the transition period and of higher predictive value and diagnostic significance than the other lipid profile indicators of transition period disorders.

Camel filariasis (Dipetalonema evansi) and its association with clinical balanoposthitis with reference to prominent changes in clinical findings, serum testosterone, semen analysis, and testicular histopathology

“…The clinical examinations included mainly parameters of heart and respiratory rates, and rectal temperatures as well as rumen movements was done as described by Fowler [ 20 ]. According to Hutjens [ 21 ]; Hulsen [ 22 ]; Burfeind et al [ 23 ]; Götze et al [ 24 ], Khalphallah et al [ 25 , 26 ], and Elmeligy et al [ 27 ], clinical scoring system and manure scoring of examined male camels were conducted. This monitoring included estimation of appetite score, rumen filling score (RFS), manure digestion score (MDS) and manure condition score (MCS).…”

Assessing Serum Vaspin Dynamics in Dairy Cows during Late Pregnancy and Early Lactation in Relation to Negative Energy Balance

“…Lastly, lipids and lipoproteins play a major role in lipid transport and metabolism. Deviant lipid profiles, characterized by changes in lipoprotein concentrations and lipid composition, have been observed in cows with FLS and ketosis [13][14][15].…”