THE EFFECT OF DIET CONTAINING MANGOSTEEN PEEL EXTRACT (GARCINIA MANGOSTANA L.) AND SUPLEMENTED WITH ZINC AND COOPER ON THE QUALITY OF SENTUL CHICKEN CARCASS

Tuti Widjastuti, Iwan Setiawan, Abun Abun, Y. Asmara Indrawati

Abstract
    Sentul chicken is a specific local chicken from Ciamis region in West Java and a dual-purpose type that can utilized for eggs and meat production. One of the alternatives to improve performance is by giving the diet added with a mangosteen (Garcinia mangostana L.) peel extract. Mangosteen peel extract contains xanthone compounds as antioxidants and antimicrobials. This research aims to determine the optimal level of mangosteen peel extract (Garcinia mangostana L.) with supplemented Zn and Cu on carcass quality of Sentul chicken. The number of chickens used 100-day old Sentul chicken that kept until 12 weeks. The experimental design used was Complete Randomized Design (CRD) with 5 treatment levels of mangosteen peel extract with supplement Zn and Cu with 4 replications respectively with 5 chicks in each replicate. The treatments consisted of P0 (only basal feed), P1 (basal diet + 60 mg/kg extract and Zn-Cu supplements), P2 (basal diet + 120 mg/kg extract and Zn-Cu supplements ), P3 (basal diet + 180 mg/kg extract and Zn-Cu supplements) and P4 (basal diet + 240 mg/kg extract and Zn-Cu supplement). The investigated parameters were final body weight, carcass weight, dressing percentage, and the meat cholesterol content of Sentul chicken. The results showed that using 120-180 mg/kg mangosteen extract with supplemented Zn and Cu significantly increased final body weight, carcass weight, and reduced meat cholesterol content compared to basal diet, but with the addition of 240 mg/kg diet final body weight and carcass weight decreases. The study concludes that the addition of mangosteen peel extract with supplemented Zn and Cu to 180 mg/kg diet resulted in optimal carcass quality