Application of fresh liquid chlorella as a natural supplement to improve performance and reduce broiler blood cholesterol levels for food safety

Abstract

Microalgae have been studied for long as a functional foods and as food supplements for health. Microalgae contain nutrients and act as antimicrobials, natural antioxidants, anti-cholesterol and contain growth hormones. The research objective was to determine the application of fresh liquid chlorella (FLC) as a natural supplement on performance and broiler blood cholesterol for food safety. One hundred broilers were grouped into 5 treatments and 4 replications, each group consisting of 5 heads. FLC was given in drinking water with a concentration of K0 = 0 FLC cells FLC ml -1 , K1 = 10 4 FLC cells ml -1 , K2 = 10 5 FLC cells ml -1 , K 3 = 10 6 FLC cells ml -1 , K4 = 10 7 FLC cells ml -1 . The parameters measured; 1) broiler performance: feed consumption (g), body weight (g), feed conversion, carcass percentage (%); 2) broiler blood cholesterol (mg dl -1 ). The results showed that supplementation with a concentration of 10 7 cells FLC ml -1 (K4) gave the best performance, body weight gain increased by 8.5% compared to control (K0). The ration conversion ranged from 1.23 to 1.25 and the percentage of carcass was 4.0% higher than the control. Blood cholesterol decreased in line with the increase in the provision of FLC in drinking water, which was between 135 dl -1 (K0) down to 125 mg dl -1 (K4). Application of FLC in drinking water with a concentration of 10 7 cells FLC/ml, can improve performance and reduce broiler blood cholesterol for food safety.