The objective of the present study was to evaluate the growth performance and feed utilization of African catfish fed a commercial diet and Clarias gariepinus reared in the biofloc system enhanced with probiotic.
The treatment was the frequency of probiotic application into the cultured system, namely, 5-day interval, 10-day interval, and 15-day interval for 60 days of experiment. Biofloc culture was grown in an experiment tank (vol. 2000 L) by mixing the probiotic ( sp.) 10 mL and molasses 200 mL per liter of Bacillus water. The fish was stocked into the biofloc system 7 days after cultured at stocking density of 1000 fish tank. The fish was fed a commercial diet that contains 38% crude protein, twice a day at satiation. The application of probiotic was reperformed after 5 days, 10 days, and 15 days after stocking.
F1000 Iskandar Putra, Rusliadi Rusliadi, Muhammad Fauzi , Usman M. Tang
Usman Muhammad Tang, Zainal Abidin Muchlisin, Henni Syawal, Heri Masjudi
The objectives of the present study were to analyze the effect of temperature regimes on stress levels and to
determine the suitable water temperature for the domestication of tapah, Wallago leeri Bleeker. A completely randomizedmethod was used in this study, and three levels of water temperature were tested, namely, 27, 29, and 31°C, in seven replicates. A total of 500 experimental fish were collected from the Kampar River, Langgam, Riau, Indonesia, and transported to the Aquaculture Laboratory, Riau University. The fish were reared in 21 tanks at stocking densities of 70-100 fish tank-1 . The fish were fed rough fish three times a day at 08:00, 12:00, and 21:00 for 30 days. Blood samples were taken on days 1, 14, and 29, which were analyzed for cortisol, glucose, and plasma protein. Growth and survival rates were recorded at the end of the experiment. ANOVA showed that water temperature had a significant effect on the stress condition, growth, and survival rate of tapah. Lower blood glucose, protein, and cortisol plasma levels were recorded in fish acclimatized at 29°C with values of 14.44mg dL-1, 5.35 g dL-1, and 6.90mgmL-1, respectively. Additionally, higher growth performance (32.30 g) and survival rates (100%) were also found in fish reared at 29°C. It was concluded that the best water temperature for the domestication of tapah is 29°C.
Arc. P Polish Vol25Fasc3_w_879
Andy Sabara, Usman Muhammad Tang, Sukendi
This study was aimed to Analyzed the Fe supplementation on gonadal maturity of selais, then to Analyzed the effect of culture system to accelerate gonadal maturation of selais, and the last aimed was to Analyzed the interaction between culture system with Fe amount. The method used is an experimental method. The design with two factors: the Fe Supplementation and culture system. Factor 1 is the feed formulation with 4 supplementation levels of Fe (synthetic), Fe From shell, Fe supplementation from anchovies and control without the Fe supplementation. Factor 2 is culture system which are stagnant ad flowing water. The results showed that Fe supplementation and culture systems affect the fish
growth, but their interaction was not significant. The best treatment was obtained in the treatment of Fe supplementation from shellfish and water flowing systems.
Artikel Ilmiah Terubuk
Warnety Munir, Mansyurdin, Usman M. Tang, Indra J. Zakaria
Larvae developmental stages was studied in the endemic bilih fish (Mystacoleucus padangensis Bleeker, 1852) from Singkarak Lake, West Sumatera, Indonesia. We obtained the study material by artificial insemination. The fertilized eggs were incubated in dechlorinated tap water under temperature 26-28oC. Ten to twenty larvae were collected everyday on the first week and then weekly till juvenile. Larvae development stages was assigned using dissecting microscope, determined and named by body total length and morphological features. The result showed that the early juvenile reached at 11.1 mm (5 week post hatching, wph) and scale juvenile at 35.36 mm total length (16 wph) through stages are total length 2.44 mm (pectoral fin bud), 2.85 mm (gill vesicle), 3.24 mm (caudal fin development biginning), 3.60 mm (pectoral fin ray), 3.75 mm (jaw has formed completely), 3.9 mm (caudal fin primordia rounded), 4.12 mm (beginning of notochord flexi), 4.69 mm (dorsal and anal fin development), 6.18 mm (primordia hypural bone), 11.1 mm (skin finfold has disappeared), 14.92 mm (caudal fin completely developed), 16.85 mm (primordia scale developed), 18.32 mm (scale pattern pigmented area has reached lateral line).
AACL Bioflux Warneti dan Usman 2016.965-975
Muhammad Fauzi, Dahelmi Dahelmi, Indra J. Zakaria, Usman M. Tang
Diplocheilichthys pleurotaenia is one of native fish present in the Kampar River. This fish used to migrate to downstream area due to reproductive activities. The construction of the Koto Panjang Dam may hamper this activity and also divided the population into 2 groups, the upstream and downstream population. To understand the biological aspects of the fish in both populations and its relationship to the presence of the dam, this study has been conducted from November 2011 to August 2012. The fish was sampled in the Kampar River, in the upstream and downstream of the Koto Panjang Dam. The fish was captured using gill nets monthly for a ten months period. The number of fish captured in the upstream was 7, while that of of the downstream was 228. The sex ratio of the fish is almost balance. The fish from both population shown similar reproductive pattern, there are mature males and females in April and there is no fish caught in May due to reproductive purposes migration. The reproductive activity of the upstream fish is unsucceed as there is no single small fish found. The rarity and the lack of small fish in the upstream population is strongly related to the failure of reproduction due to the construction of the Koto Panjang Dam.
AACL Bioflux Fauzi dan Usman 2016.305-315
Muhammad Fauzi, Usman M Tang, Indra Junaidi Zakaria, Dahelmi
A study on morphological characteristic of the male and female ofDiplocheilichthys pleurotaenia obtained from River Kampar has been conducted in November 2011 – August 2013. This study aims to understand the similarity and the differences of the male and female characteristic of the fish that inhabit in the River Kampar. There were 52 fishes of males and 85 fishes of females were examined in this study. Morphological characteristics were examined consisted of 43 characteristics. The research may explain that the morphological characteristics between male and female of the fish and the types were based on its morphology. The morphometric characters were difference between male and female of fish are Height under linealateralis (TBbl), Width caudal peduncle (LBE), Lenght from pelvic fin to anal fin(JSVSA), Height dorsal fin (TSD), Height pectoral fin (TSP) and lenght pelvic fin (TSV).
PARENG RENGI, USMAN M. TANG2, ALMASDI SYAHZA AND YUSNI IKHWAN
The research was conducted in Bengkalis District which is a strategic area in Riau Province. The coastal waters of this area is located in the Strait of Malacca and known as WPP 571. Its strategic position of the area is faced with the problem of overfishing, including the fishery resources of Kurau (Eleutheronema tetradactylum). This research was conducted by using case study method. The purpose of the research was to get the Kurau fishery resources management strategy formulation by knowing; 1) exploration potency of Kurau fish resources; 2) management strategy and sustainable utilization of Kurau fish. The bioeconomic and tiered process (AHP) analysis were used in the present study. The results showed that Kurau fish has experienced overfishing by 33.42%, the natural growth rate of Kurau fish was 0.614, capture power coefficient was 0.00000020 whilst the carrying capacity coefficient was 28 820. Fishery management potency of Kurau according to MEY regime was 15,321.34 tons with catches of 4,407.72 tons and total fishing effort as much as 141,949 trips. The formulation of management strategy of Kurau fishery resources is by giving greater attention to the process of policy formulation. This alternative strategy mean that the local government policies both that devoted exclusively to the management of Kurau fish or other fishery resources should be in favour with the sustainable factor.