Growth performance and feed utilization of African catfish fed a commercial diet and reared in the Clarias gariepinus biofloc system enhanced with probiotic

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

Effect of water temperature on the physiological stress and growth performance of tapah (Wallago leeri ) during domestication

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

Developmental stages of endemic bilih fish larvae (Mystacoleucus padangensis) from Singkarak Lake, West Sumatra, Indonesia

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

Biological aspects of lelan fish, Diplocheilichthys pleurotaenia (Cyprinidae) from the upstream and downstream of the Kampar River, Riau Province, Indonesia

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

The Morphological Characteristic of the Male and Female the Diplocheilichthys pleurotaenia (Cyprinidae) in the Kampar River, Riau, Indonesia

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).





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.