Potential of sappan wood extract as a feed additive on the feed conversion on organic matter digestibility on the buck exposed to heat stress

The aim of this study was to determine the potential of sappan wood extract as a feed additive on feed conversion and organic matter digestibility on the buck exposed to heat stress. The study used with 4 treatments and 5 repetitions. The experimental animals were 100 bucks of Rex type at 5 months of age. The average weight of the buck was ±1.8 kg. Afterward, the bucks were divided into 4 groups and given different treatment for 4 weeks, namely K+ (basal feed + heat stress), K- (basal feed + ambient temperature), P1 (basal feed + sappan wood extract 100 mg/kg + heat stress) and P2 (basal feed + sappan wood extract 300 mg/kg + heat stress). Data were recorded in the fourth week after observation based on the feed conversion ratio and Organic matter digestibility. The average score of the feed conversion of K+, K-, P1, and P2 was 6.79; 6.41; 6.10; 6.14 respectively. The average score of organic matter digestibility of K+, K-, P1, and P2 was 74.247; 74.310; 73.916; 73.804 respectively. The results of this study indicated that there were significant differences (p <0.05) in the treatment and control group.