Persentase karkas, potongan komersial serta kandungan kolesterol karkas ayam broiler yang diberi tepung daun salam (Syzygium polyanthum Wight) dalam ransum

Abstract

Diarrhea is one of diseases in broiler chicken and a antibiotics are usually needed to cure the disease. However. there are many risks caused by the use of antibiotic in poultry industries for human health. The risks are teratogenic effect, carcinogenic effect, mutagenic effect and resistence to the antibiotics. Therefore the use of antibiotics need to be substituted by natural antimicrobes. One of the natural antimicrobes is bay leaves, which contains volatile oil, tannin, flavonoid, eugenol. This research \\.as conducted to study the effect of bay leaves powder addition in the diets on carcass percentage, carcass commercial cut and carcass cholesterol of the broiler using completely randomized design ulth six treatments and three replications. The research used 180 DOC (Day Old Chicken). The treatment diets were : RO (negative control): R1 (positif control), R2 (1 % bay leaves powder), R3 (2 % bay leaves powder), R4 (3% bay leaves leaves powder), R5 (antibiotic). The data were analyzed using analyses of variance and any significant difference were fixher tested by Duncan test. The result showed that the treatment diets did not significantly increase carcass percentage, carcass .commercial cut percentage, the treatment significantly decreased carcass cholesterol level, also decreased colony of E. coli in the broiler excreta on age 13 days and 35 days.