Research Article
Volume 6 Issue 5 - 2021
Effect of Stocking Density on the Growth and Performance of Nile Tilapia (Oreochromis niloticus) Fingerlings Reared in Fiberglass Tanks
Wael M Elfatih Mohammed, Ahmed M Musa* and Elnouman B Mohammed
Department of Fish Sciences, Neelain University, Khartoum, Sudan
*Corresponding Author: Ahmed M Musa, Department of Fish Sciences, Neelain University, Khartoum, Sudan.
Received: March 13, 2021; Published: April 12, 2021




Abstract

This study was conducted to investigate the effect of stocking density on growth and performance of fingerlings of the Nile tilapia (Oreochromis niloticus) reared in fiberglass indoor tanks. The experiment designed of four treatments of different stocking densities (80, 160, 240 and 320 fish/m3) corresponding to density classes (A, B, C and D) respectively. Each treatment is replicated in three fiberglass tanks. All fish in the study was fed with a commercial diet (35% protein) at a rate of 6% of their body weight/day for 12 weeks then changed to 4% for the last week, six days a week. The results showed that the growth rate in this study increase with increase stocking density, the final mean weight recorded highest weight at (27.6g) for treatment (C), followed by treatment (D) it recorded (27.1g) and (22.5g) for treatment (B), while treatment (A) recorded lowest weight at (20.1g). Statistical analysis revealed there were no significant differences at (p > 0.05) between four treatments in (WG, WG%, DGR and SGR%,). Also, result showed that the percent of weight gain, weight gain, daily growth rate, and specific growth rate were positively proportional with stocking density; While the food conversion rate were affected inversely with stocking density. The survival rate (SR%) result Showed there were significant differences (P < 0.05) between treatments (A) and (D), where treatment (A) recorded the highest survival rate (80%), followed by treatment (C) (70%), treatment (B) (65.8%) and treatment (D) recorded the lowest survival rate (46.25%). Water quality characteristics showed significant differences at (p < 0.05) between all treatments. Result of ammonia (NH3), nitrite (NO2-), and nitrate (NO3-) showed increase in concentration with increase stocking density, while DO and pH decreased with increase stocking density. The study concluded that the highest recorded the best stocking density is of treatment (C), it can be considered the optimum density for growing tilapia fish in fiberglass tanks.

Keywords: Nile Tilapia; Stocking Density; Growth Performance and Water Quality

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Citation: Ahmed M Musa., et al. ““Effect of Stocking Density on the Growth and Performance of Nile Tilapia (Oreochromis niloticus) Fingerlings Reared in Fiberglass Tanks”. EC Veterinary Science 6.5 (2021): 03-09.

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