FASTING IN HYBRID GROUPER EPINEPHELUS FUSCOGUTTATUS X EPINEPHELUS LANCEOLATUS IN RELATION TO PROXIMATE CONTENTS, GROWTH AND FEED EFFICIENCY
Fasting in fish is commonly used to improve the quality of fish product post-slaughtered. This study aims to investigate the alteration in nutrient contents, growth, and feed efficiency of hybrid grouper Epinephelus fuscoguttatus x E. lanceolatus fasted at different intervals. There were two experiments conducted in this study. The first experiment evaluated alteration in nutrient contents of carcass and liver of hybrid groupers. The fishes were grouped into three feeding regimes: fed daily, fasted at a one-day interval, and fasted at a two-day interval. Each group had 50 fishes with an initial mean weight of 200 ± 11.3 g. The second experiment was to evaluate the growth and feed efficiency of the fishes. Hybrid groupers were subjected to two feeding regimes. The first group (n = 45) was fed daily, and the second group of fish (n = 45) fasted at a two-day interval. The first and second experiments were conducted for one and two months, respectively. The results show that hybrid groupers fed daily have the lowest protein and the highest fat in the carcass compared to those fasted on one- or two-day interval. During the first month, there was no difference between the growth rate of the fishes fed daily and fasted at a two-day interval (32.88 and 32.08%, respectively). However, in the second month, the fishes fed daily have a growth rate of 66.08%, which is 1.4 times higher than those fasted at a two-day interval (48.12%). Altogether, fasting in hybrid groupers could alter proximate contents, slow down growth, and improve feed efficiency.
Alasalvar, C., Taylor, K. D. A., and Shahidi, F. (2002). Comparative quality assessment of cultured and wild sea bream (Sparus aurata) stored in ice. J. Agric. Food. Chem, 50 (7), 2039-2045. doi: 10.1021/jf010769a.
Azodi, M., Nafisi, M., Morshedi, M., Modarresi, M., and Faghih-Ahmadani, A. (2016). Effects of intermittent feeding on compensatory growth, feed intake and body composition in Asian sea bass (Lates calcarifer). Iran. J. Fish. Sci, 15(1), 144-156.
Davis, K. B., and Gaylord, T. G. (2011). Effect of fasting on body composition and responses to stress in sunshine bass. Comp. Biochem. Phys. A, 158, 30-36. doi: 10.1016/j. cbpa.2010.08.019.
Dias, J., Rueda-Jasso, R., Panserat, S., Conceicao, L. E.C., Gomes, E. F., and Dinis, M. T. (2004). Effect of dietary carbohydrate-to-lipid ratios on growth, lipid deposition and metabolic hepatic enzymes in juvenile Senegalese sole (Solea senegalensis, Kaup). Aquac. Res., 35, 1122-1130. doi:10.1111/j.13652109.2004.01135.x.
FAO. (2016). The state of world fisheries and aquaculture 2016. Contributing to food security and nutrition for all. Rome: Food and Agriculture Organization of The United Nations. (pp. 200).
Goda, A. M., El Haroun, E. R., and Chowdhury, M. A. K. (2007). Effect of totally or partially replacing fish meal by alternative protein sources on growth of African catfish Clarias gariepinus (Burchell, 1822) reared in concrete tanks. Aquac. Res., 38(3), 279-287. doi: 10.1111/j.1365-2109.2007.01663.x.
Grikorakis, K., and Alexis, M. N. (2005). Effect of fasting on the meat quality and fat deposition of commercial-size farmed gilthead sea bream (Sparus aurata, L.) fed different dietary regimes. Aquac. Nutr., 11(5), 341-344. doi: 10.1111/j.1365-2095.2005.00351.x.
Hardy, R. W., and Lee, C. (2010). Aquaculture feed and seafood quality. Bull. Fish. Res. Agen, 31, 43-50.
Llameg, M., and Serrano, A. E Jr. (2014). Effect of cycling feeding on compensatory in milkfish Chanos chanos juvenile. ELBA BIOFLUX, 6(1), 22-38.
Luo, Z., Liu, Y. J., Mai, K.S., Tian, L. X., Liu, D. H., Tan, X. Y., and Lin, H. Z. (2005). Effect of dietary lipid level on growth performance feed utilization and body composition of grouper Epinephelus coioides juveniles fed isonitrogenous diets in floating netcages. Aquac. Int., 13, 257-269. doi: 10.1007/ s10499-004-2478-6.
Ofor, C. O., and Ukpabi, C. (2013). Effect of short-term cyclic feed deprivation on growth and economic limit of commercial feedbased in-door grow-out Clarias gariepinus (Burchell, 1822). Int. J. Fish. Aquac., 5(11), 303-309.
Poli, B. M. (2005). Quality and certification of fishery products from both capture and farming in the same market. In F. M. S. Cataudella, Donatella Crosetti (Ed.), Interactions between aquaculture and capture fisheries: a methodological perspective. Studies and Reviews. General Fisheries Commission for the Mediterranean. (Vol. No. 78, pp. 229). Rome: FAO.
Zhang, X. D., Wu, T. X., Cai, L. S., and Zhu, Y. F. (2007). Influence of fasting on muscle composition and antioxidant defenses of market-size Sparus macrocephalus. J. Zhejiang. Univ. Sci. B., 8(12), 906-911. doi: 10.1631/jzus.2007.B0906.
Copyright (c) 2019 Marine Research in Indonesia
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.