Effect of Lipid Profile and Liver Enzymes by Adding Spirulina Platensis to Feed with Different Levels of Protein in Local Male Sheep

Abstract

Abstract This study was carried out in the animal field of the College of Veterinary Medicine at Tikrit University, and continued for 90 days from 10/2/2022 to 12/31/2022, using two levels of spirulina platensis (SP), 8 and 12%, to raise the value of the diet with low protein (LP) content, as well as reducing the harmful effect of high protein (HP) on the other hand in lamb diets and to investigate the effect of two levels using some lipid profile and liver enzymes in the blood of Iraqi lambs. 24 local lambs were used, purchased from the markets of Saladin Governorate - Iraq, and their ages ranged between 3 and 4 months, with an average starting weight of 20.5 ± 0.9 kg, by randomly distributing them into 6 treatments / 4 lambs for each treatment. As follows: The first treatment was HP (control 1). The second treatment was HP + 8 g SP/1 kg concentrated feed. The third treatment was HP + 12 g SP/1 kg concentrated feed. The fourth treatment was LP (control 2) and the fifth treatment was LP + 8 g SP/1 kg feed. Concentrate and the sixth treatment, LP + 12 g SP/1 kg concentrated feed. The results of the study indicated that adding HP to the diet significantly (P<0.05) affected the level of aspartate aminotransferase (AST) on day 45, while on day 90 it affected the level of cholesterol (CHOL) and low-density lipoprotein (LDL). Adding LP also led to a significant (P<0.05) effect on high-density lipoprotein (HDL) levels on day 90 of the experiment. The interaction between HP and SP at a level of 12 g showed significant (P<0.05) differences in the levels of CHOL, triglycerides (TG), very low-density lipoprotein (VLDL) and AST on day 45, while on day 90 only CHOL and LDL had an effect. Supplementing both LP and 8g SP helped with the effects on HDL at day 90.