Abstract
The study aimed to evaluate the addition of soybean meal extract and Lactobacillus plantarum on fat digestibility, relative weight of abdominal fat, meat fat mass and carcass weight of broiler chickens. The experimental animals used were 8-day-old unsexed Cobb strain broilers as many as 192 birds with a body weight of 177.89±3.73 g. Soybean meal extract (SME) as prebiotic and Lactobacillus plantarum as probiotic. The research ration was prepared based on metabolizable energy of 3,034.58 kcal/kg and crude protein of 21.73%. The study was arranged using a completely randomized design (CRD) with 6 treatments and 4 replicates, each experimental unit was filled with 8 animals. The treatments applied include T0 (basal ration); T1 (basal ration + Lactobacillus plantarum 1.2%); T2 (basal ration + SME 0.15%); T3 (basal ration + SME 0.30%); T4 (basal ration + SME 0.15% + Lactobacillus plantarum 1.2%); T5 (basal ration + SME 0.30% + Lactobacillus plantarum 1.2%). Parameters measured included fat digestibility, relative weight of abdominal fat, meat fat mass and carcass weight. Data were processed using analysis of variance and Duncan's test in the SPSS version 16 program. The results showed that the addition of treatments to the ration had a significant effect (p<0.05) on fat digestibility, relative weight of abdominal fat, and carcass weight, but had no significant effect (p>0.05) on broiler meat fat mass. The conclusion is that the addition of 0.3% soybean meal extract and 1.2% Lactobacillus plantarum to the diet can reduce fat digestibility, relative weight of abdominal fat and increase carcass weight and produce the same meat fat mass.
Published Version
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