Performance of some growth promoters on hybrid walking catfish (Clarias batrachus × Clarias gariepinus)

Abstract

Abstract:A study was conducted to determine the efficacy of three most commonly used growth promoters from different pharmaceutical companies on growth performance of hybrid walking catfish (Clarias batrachus × Clarias gariepinus). The experiment was done in the wet laboratory of the Department of Aquaculture, BAU, Mymensingh, with a total of 10 aquaria and 160 fish having mean initial weight of 6.3 ± 0.48 g. The three growth promoters, "Charger gel" from Fishtech (BD) Ltd., "Growth gel" from Advance Agrotech (BD) Ltd. and "Hepaprotect-aqua" from Renata Animal health Ltd., were used in separate nine (9) aquaria at recommended, lower dose and higher dose respectively. One aquarium was used as control (diet without any growth promoter). The fish were fed with paragon nursery floating feed at 20% of body weight in each aquarium for 28 days. Doses of Charger gel were given as 80, 60 and 100 mg/20 g feed/day, that of Growth gel, 0.14, 0.12 and 0.16 ml/20 g feed/day and of Hepaprotect-aqua, 30, 15 and 50 mg/20 g feed/day. Re-circulatory system was used throughout the experimental period. By applying recommended, lower and higher dose of "Charger gel", mean final weights were found as 23.0, 21.9 and 35.9 g; average daily weight gain as 0.60, 0.56 and 1.06 g and specific growth rate (SGR) as 2.01, 1.93 and 2.70% respectively. For "Growth gel", mean final weights were found as 22.8, 17.3 and 31.1 g; average daily weight gain as 0.59, 0.39 and 0.88 g and SGR as 1.99, 1.57 and 2.48 % respectively. For "Hepaprotect-aqua", mean final weights were found as 24.2, 17.5 and 28.2 g; average daily weight gain as 0.64, 0.40 and 0.78 g and SGR as 2.09, 1.58 and 2.32% respectively. In all the cases survival rates were 100%. All the three growth promoters showed better results at their higher doses in comparison to their results in lower and recommended doses. However, in average Charger gel showed the best result than the other two growth promoters. This information on the efficacy study of growth promoters needs to be disseminated to the farmers for improved fish production.

Effects of stocking density on the growth rate of gold fish fry reared in hapa

“…Hossain et al (2003) found that ammonia (NH4) in different treatments is varied from 0.004 to 0.077 mg/L that was insistent to the findings of present study. Similar study were conducted by Samad et al (2016); Islam et al (2017); ; Shabuj et al (2016); Rahman et al (2015); Ali et al (2016b); Rahman et al (2016) and Anka et al (2016); their results were also similar. Nitrite can be associated with ammonia concentration in the water body.…”

“…In the present study, nitrite concentration ranged from 0.01 mg/L to 0.03 mg/I, with the mean values of 0.013±0.01 mg/L, 0.01510.01 mg/L and 0.02710.01 mg/L, which was more or less similar to the findings of (Begum and Vijayaraghavan, 1999) who found that nitrite-nitrogen varied from 0.008 to 0.026 mg/L and 0 to 0.029 mg/L, respectively. Similar study were conducted by Samad et al (2016); Islam et al (2017); Rahman et al (2017); Rahman et al (2016) and Anka et al (2016); their results were also similar. In the present study, phosphate ranged from 0.6 to 1 mg/L which was more or less similar to the findings of Rahman (2003) who reported that PO 4 -P concentration varied from 0.78 to 2.5 mg/L in different treatments.…”

“…Kwiatkowski et al (2008), Kujawa et al (2010), Wolnicki et al (2009) A similar survival rate was observed by Daniel et al (2010) ranged from 76.9 to 90.0%. Similar study was conducted by Samad et al (2016); Islam et al (2017); Rahman et al (2017); Rahman et al (2016) and Anka et al (2016); their results were also similar. Survival rate was found to be relatively influenced by different stocking densities such as the lowest stocking density owed the highest survivability.…”

“…Kujawa (2004), Kwiatkowski et al (2008), recorded crucian carp body weight ranged 1.3 to 3.0 mg. Rcma and Gouveia (2005) recorded 0.9 mg of wet body weight of fish. Similar study was conducted by Samad et al (2016); Islam et al (2017); Rahman et al (2017); Rahman et al (2016); Anka et al (2016); Ali et al (2016); Zaman et al (2017) and Haq et al (2017); they got relevant results. It was observed that the highest weight gain of gold fish fry was obtained from anent T 1 which might be due to lower stocking density and lower competition for lowest weight gain was obtained from T 3 which might be due to comparatively her stocking density so the feeding competition may occur among the species.…”

Effects of Growth Promoter-Enriched Farm-Made Feeds on the Growth, Flesh Quality and Economics of Labeo rohita Culture

“…To attain this, Labeo rohita, a commercially important cultured fish was selected as the experimental fish due its large consumer demand along with three different groups of growth promoters, depending on their active main ingredients (beta glucans, vitamin and mineral premix, dietary multienzyme) and mode of action (immunomodulation, micronutrient supplementation, enhancing digestion) and how they influence feed efficiency. The use of growth promoters on several species of fish like Clarias batrachus [10]. Oreochromis niloticus [11].…”