Effects of Asprosin Levels and Some Biochemical Parameters on Conception in Repeat Breeder Cows

Abstract

The purpose of this study was to investigate the effects of asprosin levels and various biochemical parameters (NEFA, BHBA, glucose, albumin, globulin, total protein, ALT, AST, and total bilirubin) on conception in repeat breeder (RB) cows. The study included sixty RB cows that had been inseminated at least three times, but had not been pregnant and had no gynecological abnormalities, as assessed by ultrasonography. From the sixty cows, two groups were selected at random: pregnant (Group I, n = 10) and non-pregnant (Group II, n = 10) animals. After estrus detection, a 10 mL blood sample was collected from each animal’s tail vein. All animals were inseminated 12 hours after the start of estrus. The blood samples were centrifuged at 3000 rpm for 15 minutes, and the serum was extracted and stored at –80°C until analysis. On the 45th day after insemination, ultrasonography was used to examine the pregnancy. Asprosin levels were measured using ELISA, and biochemical tests (NEFA, BHBA, glucose, albumin, globulin, total protein, ALT, AST, total bilirubin) were performed with an autoanalyzer. Non-pregnant RB cows had considerably lower levels of asprosin (p < 0.05) than pregnant RB cows. When other biochemical parameters (BHBA, NEFA, glucose, albumin, ALT, AST, total bilirubin, total protein and globulin) were compared, there was no significant difference between the groups (p > 0.05). Thus, significantly elevated levels of asprosin in pregnant RB cows suggested that asprosin could play a role in RB cow conception. In addition, there was a positive correlation between asprosin levels and AST, total protein, and globulin levels in pregnant RB cows.