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Immune performances of sangkuriang catfish (Clarias gariepinus) with addition of potassium diformate on feed

100%
Yustiati A., Nadiyah N. A., Suryadi I. B. B., Rosidah R.
World News of Natural Sciences
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2019
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vol. 25
113-129
EN
This research aims to determine the effective dosage of potassium diformate (KDF) in feed to enhance sangkuriang catfish immune performances. The research was conducted on November - January 2019, at Aquaculture Laboratory Building No. 4 Faculty of Fisheries and Marine Sciences Universitas Padjadjaran. This study used an experimental method of Completely Randomized Design (CRD), with four treatments and three replications. The treatments are the addition of potassium diformate into feed with doses A (0%), B (0.5%), C (0.7%) and D (0.9%). Observed parameters are clinical symptoms, total leukocyte count, total erythrocyte count, specific growth rate, survival rate and water quality. The results showed that 0.5% KDF feed produced the highest survival rate of 85% and the highest specific growth rate of 3.59% after 40 days. Furthermore, due to treatment, total erythrocyte count increased from 2.09×106 cells/mm3, to 2.10×106 cells/mm3 (8.1%) and total leukocyte count increased from 7.1×104 cells/mm3, to 10.7×104 cells/mm3 (42.81%). The addition of 0.5% KDF in feed is effective in improving the immune performances of sangkuriang catfish challenged by A. hydrophila, with the highest survival rate of 97%. Moreover, recovery of total leukocyte count and total erythrocyte count was faster than other treatments as of day 7th, with a value 1.97×106 sel/mm3and 12.60×104 sel/mm3. It also resulted in the lowest gross clinical signs and the fastest recovering.
2
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Utilization of Liquid Commercial Probiotics to Improve Survival and Growth of Siamese Catfish Fingerlings (Hypopthalmus pangasionodon (Sauvage, 1878))

100%
Meidi W. S., Lili W., Iskandar I., Suryadi I. B. B.
World News of Natural Sciences
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2019
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vol. 24
54-63
EN
The purpose of this research is to determine the effect of liquid commercial probiotics usage on improving the survival rate and growth of Siamese catfish fingerlings. This research was conducted on March to May 2018, at Building 4 Laboratory, Faculty of Fisheries and Marine Sciences, Universitas Padjadjaran. This study used an experimental method with Completely Randomized Design (CRD), which consisted of four treatments and three replications. The treatments are feed without the addition of probiotics, and feed with additional probiotics at doses of 2, 4, and 6 ml / kg of feed. The parameters observed were survival rate, absolute weight, absolute length, feed conversion ratio, proximate test analysis and water quality. Data on absolute weight, absolute length, feed conversion ratio and survival rate were analyzed using analysis of variance, while nutrition changes of fish feed and water quality were analyzed descriptively. The results showed that the best addition of probiotics for feed, is with probiotic doses of 2 ml / kg of feed, which resulted in a 100% survival rate, an absolute weight value of 1.03% and a feed conversion ratio of 1.13.
3
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The Prevention of Aeromonas hydrophila on Tilapia (Oreochromis niloticus) Fingerling using Current Generating Circular Tanks

100%
Suryadi I. B. B., Rizhmi N. M., Grandiosa R., Rochima E.
World News of Natural Sciences
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2022
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vol. 40
91-103
EN
This research focused on determining the best survival performance of tilapia (Oreochromis niloticus (Linnaeus, 1758)) fingerlings in a current generating circular tanks and challenged by Aeromonas hydrophila. This research used a Completely Randomized Design (CRD) with four treatments and four replications. Fish size are ranging from 5 to 7 cm that obtained from Fish Breeding Center of Bandung City, Indonesia. The treatment used are water current and venturi combination with water velocities of 0 m s-1 (A), 0.06 m s-1 (B), 0.1 m s-1 (C), and 0.2 m s-1 (D). The research started with fish rearing (40 days) and was followed by a challenged test (14 days). Tilapia fingerlings were challenged by A. hydrophila at density 108 cfu ml-1 using immersion method. The parameters were gross clinical symptoms, survival rate, red blood cells, white blood cells and water quality. The results showed that current and venturi combination of 0.1 m s-1 gave the best immune performance seen from the increase in red blood cells and white blood cells with 48% of survival rate, however survival rate was not significantly different (p ≤ 0.05) among treatments. The increase in red blood cells and white blood cells was from 1.1 × 106 cells mm3-1 to 5.1 × 106 cells mm3-1 and 4.2 × 105 cells mm3-1 to 5.6 × 105 cells mm3-1 respectively. Current generating circular tanks also enhanced tilapia immune system against A. hydrophila infection since fewer clinical symptoms occurred during challenged period.
4
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Growth and survival rate of bonylip barb (Osteochilus vittatus) in round water flowing container

100%
Yustiati A., Rojai M. T. S. i., Suryadi I. B. B., Iskandar I.
World News of Natural Sciences
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2022
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vol. 42
44-55
EN
This research is done to reveal the effect of water flow on the round container to increase the growth and survival rate in bonylip barb. The method used in this research is an experimental method using a Completely Random Design (CRD) which is consist of three treatments and five repetitions. The treatments are round container without water flow (A), round container with 0,1 m s-1 of water flow (B) and round container with 0,1 m s-1 of water flow with an additional venturi aerator. The numbers of bonylip barb fingerlings used in this research are 900 with a length of 1-3 cm. The container used in this research is 15 water gallons with a volume of 19L. The density of the container is 60 fish per container. Fish maintained for 40 days. The feeding rate given is 5% of the biomass. The observed parameters are survival rate, daily growth rate and feed conversion ratio observed every 10 days. The result showed that the water flow combined with the venturi aerator give the best result with 77.3% of survival rate, 3.12% of daily growth rate and 1.42 feed conversion ratio.
5
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The Productivity of Using Current Generating Circular Tanks for Tilapia Fingerling (Oreochromis niloticus (Linnaeus, 1758)) Production

100%
Suryadi I. B. B., Fadylah M. I., Iskandar I., Yustiati A.
World News of Natural Sciences
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2019
|
vol. 27
85-95
EN
This research conducted to determine the optimum water current models for growth performance and survival rate of tilapia fingerlings (O. niloticus) in circular tanks. The method used in this research is Completely Randomized Design (CRD), which consists of three treatments and four replications. The treatments are circular tanks without water current (control), circular tanks with 0.1 m s-1 water current and circular tanks that combine 0.1 m s-1 water current with venturi aeration. Tilapia fingerlings were kept in circular tanks with 30 cm diameter and 37 cm of height, with water level of 30 cm. 50 fingerlings with size of 2-3 cm were reared in every circular tank. The feed is given 3 times daily with a feeding rate of 5% from biomass. Absolute growth rate, specific growth rate, survival rate, feed conversion ratio and feed efficiency were observed every ten days, while water quality was assessed weekly. After 42 days of rearing, the results showed that the 0,1 m s-1 water current combined with venturi aeration had the highest dissolved oxygen level (6.5-7.3 mg L-1), the lowest ammonia levels (0.15-0.20 mg L-1), 92% survival rate, 1.17 g absolute growth rate, 3.65% specific growth rate, 1.3 feed convertion ratio and 77.8% feed efficiency.
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