The rearing of catfish, Rita rita with live and prepared feeds in cemented cisterns was initiated for 90 days. The juveniles of experimental fish with mean initial body weight 6.40 ± 1.6 g were procure from local fishing community of River Indus near Jamshoro. Feed regime like live small fish (tilapia), tubifex larvae, chopped chicken viscera and dead small fish (tilapia) were used as live and prepared feed with control. It was observed that the experimental fish fed with chopped chicken viscera exhibited significantly better growth (129.10 ± 2.90 g weight gain) followed by chopped small fish (103.90 ± 1.10g) as prepared feed while live small fish resulted 3rd preference (81.89 ± 1.11 g). Significantly lower growth and survival was obtained fed with Tubifex larvae (73.85 ± 1.15 g). Water quality parameter like pH, temperature, dissolved oxygen; ammonia nitrate and alkalinity were monitored fortnightly and found within the suitable ranges. Finally decided that chopped chicken viscera found to be ideal food for better growth and survival of catfish Rita rita reared in cemented cisterns.
Short Communication · Volume 51, Issue 6, 23 September 2019 · Open Access
Rearing of Catfish, Rita rita with Live and Prepared Feeds in Cemented Cisterns
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Affiliations & Notes ⌄
- 1Department of Aquaculture and Fisheries, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand, Sindh 2Department of Freshwater Biology and Fisheries, University of Sindh, Jamshoro, Sindh , * Corresponding author: dr_ntnarejo46@yahoo.com
Article Info ⌄
- Journal:
- Pakistan Journal of Zoology
- Published:
- 23 September 2019
Abstract
Materials and methods
To determine the suitability of live and prepared feed on growth and survival rate of indigenous catfish R. rita, 13 cemented cisterns of 1.25m2 each were randomly selected for the four different food regimes were replicated thrice with control (on natural food only).
Live small fish (tilapia) were designated as Feed I (live); Tubifex larvae Feed II (live); Chopped chicken viscera Feed III (prepared); Dead small fish (tilapia) were assigned as Feed IV (prepared) and Control with natural food control
The growth performance of catfish Rita rita reared in cemented cisterns with live and prepared feed was initiated for 90 days trial starting from March- May 2016. Ten experimental fish with mean initial body weight of 6.4 ± 1.6 g were stocked in each cistern. Growth parameters like mean initial weight, mean final weight, weight gain, percentage weight gain, survival rate, feed conversion ratio (FCR), specific growth rate (SGR) and production was recorded. Water quality parameters like pH, temperature, dissolved oxygen, alkalinity, and ammonia nitrate were monitored fortnightly with the help of analyzer number C-6020 throughout the study period. The chicken viscera were procured from local market while dead and live small fish (tilapia) was obtained from the stock maintained.
Live small fish and tubifex larvae were supplied at rate of 5% of the body weight while 5.0 g of chopped chicken viscera and dead small fish (tilapia) was given every morning at 8.00 AM. The amount of feed increased with the increase of fish weight as reported by Narejo et al. (2005). Sampling was done after a month by measuring weight of fish. The fish were weighed on an electronic balance with help of small plastic bucket.
Duncan’s Multiple Range Test (DMRT) was used to identify significant difference between means. This statistical analysis was performed with the aid of the computer software SPSS program.
Results and discussion
The growth performance of catfish, Rita rita was recorded during March-May 2016. The significantly (P<0.05) highest weight gain and survival was recorded in feed III (129.10 ± 2.90 g) fed with chopped chicken viscera, followed by feed IV (103.0 ± 1.10 g) fed with dead small fish. Significantly (P<0.05) lowest growth was noticed from feed I and II (81.89 ±1.11g and73.85± 1.15g) fed with live small fish and tubifex larvae respectively. The mean initial weight of 6.4 ± 1.6g reached to the final weight of 135.50 ± 2.50 g in feed III with 100% survival rate (Table 1). It indicated that the experimental fish Rita rita prefers prepared feed (dead) instead of live feed.
Amin et al. (2012) from Bangladesh reared Rita rita with three food items namely small prawn, chicken viscera and formulated feed. They observed highest growth feed with chicken viscera and small prawn, which is in agreement with the present findings. Numerous workers performed same experiment in different fish species and obtained results which support present study like Sanaullah et al. (1986) in Clarias batrachus, Yasmin et al. (1998) in Clarias batrachus reported highest weight gain (793.1g) fed with feed with chopped tubifex worms. Lowest growth with pellet feed. Nahar et al. (2000) in Clarias gariepinus fed with chopped shrimps showed highest growth. Narejo et al. (2002) in Pisodonophis boro reared in cemented cisterns with different food items. The significantly highest growth rate was observed in treatment I (dead small shrimps) followed by treatment II (dead small fish) and the lowest was observed in treatment III (Pellet feed). Narejo et al. (2003b) reported dead small prawn and fish for the better growth, survival and production for the rearing of Mastacembelus armatus in cemented cisterns. Narejo et al. (2003a) reared Monopterus cuchia with live and prepared feed and found that highest growth in dead small fish. It is inferred that the catfish prefers animal-based feed (dead) rather than live feed. Hence all above researchers are in agreement with the present findings. Finally concluded that chicken viscera was found to be the suitable food for the rearing of R. rita in cemented cisterns. It was also observed that the 100% survival rate was noticed from prepared food items (dead) and lowest 80-85% survival in live feeds. Similar observation has been reported by number of researchers Nahar et al. (2002) in Clarias gariepinus; Narejo et al. (2002) in Pisodonophis boro and Narejo et al. (2003b) in Mastacembelus armatus. Naeem and Zulqurnanin (2018) reported growth performance of Oreochromis niloticus under semi-intensive culture system.
Table II shows physicochemical analysis of water parameters that these all were in the ranges of fish culture operations. These parameters are not different from the ones reported by other authors earlier (Kadiri, 2000; ; ; ; Chandrashekhar et al., 2003; Satpathy et al., 2007; ; .
Table I.- Data on growth and survival rate of catfish, Rita rita (Hamilton) fed with live and prepared feed in cemented cisterns.
| Parameters | Feed I Live small fish | Feed II Tubifex larvae | Feed III Chopped chicken viscera | Feed IV Dead small fish | *Control Without feed |
| Rearing period (days) | 90 | 90 | 90 | 90 | 90 |
| Mean initial eeight (g) | 6.4 a ± 1.6 | 6.4 a ± 1.6 | 6.4 a ± 1.6 | 6.4 a ± 1.6 | 6.4 a ± 1.6 |
| Mean final weight (g) | 88.29c ± 2.3 | 80.25d ±1.5 | 135.50 a ± 2.50 | 110.30 b ± 1.4 | 20.0e ± 1.66 |
| Weight gain (g) | 81.89 c ± 1.11 | 73.85 d ± 1.15 | 129.10 a ± 2.90 | 103.90 b ± 1.10 | 13.60 e ± 1.402 |
| (%) Weight gain | 1379 c | 1253 d | 2117 a | 1723 b | 33.33 e |
| SGR (% per day) | 1.46 c | 1.40 d | 1.69 a | 1.58 b | 0.12 e |
| FCR | 4.50 a | 4.40 b | 3.80 d | 3.90 c | ---- |
| Survival (%) | 80 c | 85 b | 100 a | 100 a | 10 e |
| Production (Kg/m2/90 days) | 5.886 c | 5.350 d | 9.033 a | 7.353 b | 0.236 e |
*Control without feed, only with natural food. Figures in the same row having same superscripts are not significantly (p˂0.05) different when compared on the basis of Duncan’s New Multiple Range Test.
Table II.- Month-wise variation in water quality parameters of cemented cisterns throughout the study period.
| Parameters | Months | ||||||
| March | April | May | Minimum | Maximum | Mean ± Sd. | (WHO 2000) | |
| Temperature (ºC) | 26.8 | 27.5 | 28.4 | 26.8 | 28.4 | 27.56 ± 1.04 | 18.5-30.0 |
| pH | 7.35 | 7.30 | 7.33 | 7.30 | 7.35 | 7.32± 0.3 | 6.5-8.5 |
| D.O. (mg/l) | 4.6 | 4.8 | 4.8 | 4.6 | 4.8 | 4.7 ±1.0 | 4.0-9.0 |
| Alkalinity (mg/l) | 149 | 152 | 180 | 149 | 180 | 160 ±10.5 | 100-200 |
| Ammonia (mg/l) | 0.35 | 0.54 | 0.48 | 0.35 | 0.54 | 0.45 ± 0.15 | 0. 5- 1.0 |
| Nitrite (mg/l) | 0.168 | 0.170 | 0.171 | 0.168 | 0.171 | 0.169 ±0.2 | 0.1-0.2 |
Conclusion
It was concluded that the chopped chicken viscera were found to be suitable food for the rearing of R. rita in cemented cisterns.
Statement of conflict of interest
The authors declare no conflict of interest.
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