The Effect of Feeding Lactobacillus casei and Dahlia Tuber Extract Mixture on Intestinal Bacteria, Nutrient Digestibility, Immune Organ and Growth of Broilers
The Effect of Feeding Lactobacillus casei and Dahlia Tuber Extract Mixture on Intestinal Bacteria, Nutrient Digestibility, Immune Organ and Growth of Broilers
Istna Mangisah1*, Heni Rizqiati2, Nyoman Suthama1
ABSTRACT
Maintaining a healthy digestive tract is important for poultry production. Intestinal microbial balance is beneficially influenced by either probiotics or prebiotics as well as their combination. This study aimed to investigate the feeding effect of Lactobacillus casei and dahlia tuber extract (LDTE) mixture on intestinal microbial, digestive and immune organs weights, nutrient digestibility, and productive performance of broiler starter. Day-old broiler chickens with an average body weight of 45.61 ± 3.46 g, a total of 160 birds, were placed evenly in 20 experimental plots. The treatment tested was the LDTE level in 100 grams of feed, LDTE0 = without LDTE, LDTE1 = 1 mL, LDTE2 = 2 mL, and LDTE3 = 3 mL. The treatment was given for 21 days, starting from d-1 until d-21. Intestinal microbial population, weights of digestive and immune organs, nutrient digestibility, and growth performance of broiler starter were the parameters observed. The research was arranged in a completely randomized design. Data were analyzed according to one-way ANOVA in a completely randomized design. Dietary supplementation of Lactobacillus casei and dahlia tuber extract mixture significantly increased (p <0.05) nutrient digestibility and intestinal total lactic acid bacteria, but decreased coliform and improved growth performance of broilers. However, the treatment did not affect the digestive and immune organ weights of broilers. In conclusion, supplementation of LDTE2 improves intestinal bacterial balance, protein digestibility, and growth performance of broilers, but it did not affect the relative weight of digestive tract segment and immune organs of broilers.
Keywords | Broiler growth, Digestive tract, Feed additive, Intestinal bacteria, Lymphoid organ
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