The Effect of Natural Additives on Microbiota and Body Weight on Broiler Chicken

Abstract

This study was conducted to evaluate the effects of natural additives (synbiotics) made from Lactobacillus casei and dahlia tuber extracts (LDT) and synbiotics made from Lactobacillus casei and garlic tuber extract (LGT) on the number of lactic acid bacteria and coliform in the small intestine and body weight of broiler chicken. One hundred and sixty 1-day-old broilers were randomly placed in 20 experimental units for 3 weeks. The study used a completely randomized design with 5 treatments and 4 replications, each experimental unit consisted of 8 birds. The treatments tested were level of additives, T0 (control), T1 = LDT 1%, T2 = LDT 2%, T3 = LGT 1% and T4 = LGT 2%. The parameters observed were the amount of lactic acid bacteria (LAB) and coliform in the small intestine and the body weight of the starter phase of broiler chickens. The collected data were analyzed for variance and if there was a significant effect, then continued by Duncan multiple region test. The results showed that used of LDT1% and LDT 2% no significantly affected on lactic acid bacteria, coliform and body weight of broiler chickens. Giving LGT 1% and LGT 2% significantly increased the amount of LAB in the small intestine and increased body weight, while the number of coliform was significantly lower than the control. The conclusion was that the natural additives LGT 1% and 2% could increase LAB, reduce colliform and improve the performance of broiler chickens.