Abstract

Khalaf A. H. Al-Rishdy, Waleed Y. Kassim and Murthda F. AL-Hellou

This study was carried out in the commercial animal farms in the Aboalkassib village during November /2018, to investigate the influence of injected of oxytocin hormone on some biochemical parameters (glucose, cholesterol, total protein, albumin, AST and ALT) and hormones (LH, FSH, estradiol and prolactin) concentrations in the carotid artery and jugular vein. A total of 30 dry adult Holstein crossbreed cows aged between 5-6 years old were divided randomly into two groups: 15 cows as a control group and 15 cows were treated with oxytocin hormone at dose 9 ml/head by injecting in intramuscular. The results showed significant (P<0.05) increase in the concentrations of glucose, cholesterol, LH, FSH, estradiol and prolactin in the treatment group compared with the control one. No significant (P<0.05) differences in the concentrations of total protein, Albumin and liver enzymes (AST and ALT) were observed among the treatment group and the control group. Also, the results showed that concentrations of glucose and most of hormones such as LH, FSH, estradiol and prolactin were higher significantly (P <0.05) in a jugular vein compared with carotid artery, while the concentration of estradiol was higher significant (P <0.05) in carotid artery compared with jugular vein.