| Penulis/Author |
Diana Rahmawati (1); Prof. Dr. Ir. Zuprizal, DEA., IPU., ASEAN Eng. (2); Dr. Muhsin Al Anas, S.Pt., IPP (3); Dr. Ir. Chusnul Hanim, M.Si., IPM., ASEAN Eng. (4) |
| Abstrak/Abstract |
Guanidinoacetic acid (GAA) is involved in the de novo synthesis of creatine. These reactions improve
cellular bioenergetic for broiler muscle growth and performance. This study was conducted to evaluate the
effect of GAA on broiler growth performance fed a low-protein diet. A total 1.176-day old chick unsexed
broiler (Lohman Indian River strain) were randomly allocated to 2×3 factorial arrangement with seven
replicate pens of 28 birds each. The dietary treatment consisted of two levels of protein (high and low
protein in each growth phase) and three levels of GAA (0, 600, and 1200 g/ton). Results showed that GAA
with different protein in pre-starter phase increased feed intake (FI) and feed conversion ratio (FCR), in
starter phase increased FI and body weight (BW), and increased BW only in finisher phase (P<0.05). GAA
level did not affect to FI, BW, FCR, (index performance) IP, depletion in pre-starter phase and starter
phase, but in finisher phase reduced BW and IP (P<0.05). Low protein diet reduced FI and FCR also
increased BW and IP in pre-starter phase, starter phase (P<0.05). But in finisher phase low protein diet
reduced FI, BW, and IP but increased FCR (P<0.05). Supplementation GAA with different protein levels
increased FI and decreased FCR in the pre-starter phase, increased BW in the starter phase and finisher
phase.
Keywords: Broiler Chickens, Creatine, Guanidinoacetic Acid, Performance, Protein Level |
