EARLY STUDY: THE EFFECT OF TAURINE ON GROWTH OF GOURAMI (Osprhonemus goramy) AND TILAPIA (Oreochromis niloticus) JUVENILES

Abstract

<p>Taurine in diet affected increasing in body weight and length as well as survival rate of juveniles or adults of many marine fishes. It is explained that taurine presumably increased in their ability to tolerate the hypertonicity of seawater as well as to improve their metabolism which leaded to induce maturation. In order to elucidate the effect of taurine physiological universally in the fishes, early study was conducted on freshwater fishes namely gourami (Osprhonemus goramy) and tilapia (Oreochromis niloticus). The growth was determined by their body weight and morphological changes included the length and width of their body. The reproductive status was determined by measuring fish gonadosomatic indexes (GSI) (only for tilapias). Eight experimental groups were chosen consisted of two groups with commercial fish food with and without taurine and two groups with natural fish food (consisted of 50% Xanthosoma sagittifolium) with and without taurine. Amount of taurine given was 0.4 mg/fish/day. Complete randomized design with factorial 2x2 was applied to this study with 40 gourami juveniles (@ 7 grams in weight) and 40 tilapias (@ 50 grams in weight) were used for the experimental units. The study was conducted in 2 months. Analysis variances and LSD and/or t-test at 5% were used to determine the differences among experimental groups. The results indicated that taurine groups increased their body weight for 25-66% compared to the control (no taurine) as well as their body length and width (p< 0.05). Yet, the GSI of tilapias was not shown any significantly different. In this early study we indicated that taurine affected the growth in juvenile gourami and tilapia. However, further experiments related with physiological changes and reproductive status was still needed to complete the study. </p><p><strong>Keywords</strong>: Taurine, gourami, tilapia, growth rate</p>

Peranan Taurin pada Pertumbuhan dan Kelangsungan Hidup Larva Ikan Kerapu Bebek Cromileptes altivelis (Valenciennes, 1828)

“…(Rhodes et al, 2011). Taurin berperan dalam pertumbuhan dan perkembangan beberapa jenis larva (Matsunari et al, 2005;Kim et al, 2014) dan juvenil (Widyasti et al, 2013;Widiastuti et al, 2015;Loekman et al, 2018).…”

“…Taurin diketahui berpengaruh terhadap peningkatan pertumbuhan dan kelangsungan hidup beberapa jenis ikan, seperti pada larva kerapu sunu Plectropomus leopardus (Melianawati dan Astuti, 2012), larva tuna sirip biru Atlantik Thunnus thynnus (Koven et al, 2018), larva northern rock sole Lepidopsetta polyxystra (Hawkyard et al, 2015), larva seabream Pagrus major (Kim et al, 2014) dan pada Japanese Flounder Paralichthys olivaceus, baik pada stadia larva (Chen et al, 2005) maupun juvenil (Kim et al, 2008). Taurin juga diketahui berpengaruh terhadap pertumbuhan yang lebih baik pada beberapa benih ikan, seperti pada ikan gurami Osprhonemus goramy dan tilapia Oreochromis niloticus (Widiastuti et al, 2015), kakap Lutjanus colorado (Hernandez et al, 2018) serta ikan kerapu hybrid cantik (E. fuscogutattus x E. microdon) (Loekman et al, 2018).…”

Antioxidant role of taurine and oyster mushroom on kidneys of male mice induced by paraquat herbicide

“…Beside those antioxidants, some of free amino acids are also used for this antioxidant action, one of which is taurine. Taurine, one of the amino acids containing sulfur groups which is known play in various functions in the body, as an osmoregulator, neuromodulator, detox [7], and act as an insulin-like growth factor in some fried fish [8,9]. These compounds are found in most of tissue organs but high concentrations in liver [10].…”