The objective of this study was to determine the relationship between lipid assessment (total-cholesterol, HDLcholesterol, LDL-cholesterol, triacylglycerols) and arterial lesions in farm chickens fed on six different vegetable oil varieties (crude red palm oil, industrial red palm oil, refined palm oil, soya oil, cotton oil, and groundnut oil). The following emerged from the different analyses: palm oil, and, to a lesser extent, soya oil and cotton oil, tended to lower the total cholesterol rate whereas groundnut oil increased the rate. Groundnut oil raised highly triacylglycerols whereas soya oil and palm oil had the opposite effect. Red palm oil and cotton oil increased LDL-cholesterol rate whereas groundnut oil and soya oil tended to lower the HDL-cholesterol rate. Moreover, pathological anatomy studies demonstrated that arterial lesions were generally fewer, particularly among chickens fed on palm oil.