Penelitian kajian padat tebar budidaya ikan baung ini bertujuan untuk menjawab pertanyaan para pembudidaya baung dengan KJA di waduk Sungai Paku kabupaten Kampar. Kajian ini dilaksakan di Waduk Sungai Paku dari bulan Mei hingga September 2013. Kajian ini menggunakan 3 perlakuan dan 3 ulangan, adapun perlakuannya berupa padat tebar yang berbeda yaitu 1500 (P1), 2000 (P2) dan 2500 (P3) dengan ukuran masingmasing adalah keramba 16 m2. Dari hasil kajian didapat bahwa tidak ada perbedaan signifikan pengaruh padat tebar terhadap hasil budidaya ikan baung.Study of rearing cat fish with different density aimed to answer the problem of fish cultivator with floating net cage on Sungai Paku dam, Kampar country. This research has done at Sungai Paku dam on May to September 2013. This studied use different density culture of fish, P1 with density 1500 fish/cage, P2 with density 2000 fish/cage and P3 with density 2500 fish/cage (each cage was 16 m2). Result of this research was no significant between treatments.
Asian redtail catfish (Hemibagrus nemurus) is an economically fish on Malay community. On its breeding requires silk worms as natural food that has the best for growth and survival in the post larvae phase. On the other hand, the availability of silk worms is very dependent on natural conditions. During the rainy season, the availability of silk worms becomes very rare, and this becomes a separate problem for general fish breeders. Based on this, the aimed of this research was to determine how the effect of alternative feeds, in the form of fermented commercial feeds, on the growth performance and survival rate of Asian redtail catfish post larvae. This study used a completely randomized design with 3 treatments and 3 replications, namely rare of Asian redtail catfish post larvae with silkworm feed (A), fermented commercial feed (B), non-fermented commercial feed (C), the size of post larvae used was 11.00 ± 0.00 mm, with a stocking density of 4 fish/L. The best results from this study were found in treatment A, which resulted in absolute weight growth of 0.77 ± 0.00 g, absolute length growth of 23.33 ± 0.36 mm, but the highest survival rate was obtained in treatment B (81.33 ± 4.51%), although not significantly different from treatment A. Based on the observation of feed structure, fermented commercial feed was structurally softer. The behavior of the feed response, treatment B was not different from treatment A, while the behavior of the feeding pattern showed that fermented feed (B) was better than non-fermented commercial feed (C). The results of the proximate test, the fermented feed decreased in protein, fat and crude fiber content, while the ash content increased slightly.
Green catfish is a high economic value commodity in Riau. However, cannibalism in green catfish seeds is still an obstacle in its hatchery, and so far there has been no specific study of cannibalism in green catfish. The purpose of this research was to study the cannibalism of the green catfish seeds at different stocking densities. The research used a completely randomized design with four treatments, namely stocking density 1 (A), 2 (B), 3 (C) and 4 (D) indvidual/liter with five replications. A feed with 40% protein was given four times a day at satiation. The results indicated that the cannibalism index increased with the increase in stocking density, namely 32, 34.5, 53.33 and 51.50%, respectively. The highest incidence of cannibalism was at stocking density of 3 individuals/l, but it was not different from that of 4 individuals/l. The dominant cannibalisms are type 1 cannibalism, namely 26, 27.5, 50.67 and 43.75% respectively; however, type 2 cannibalism did not differ among treatments. There was no difference in growth performance among treatments. It could be concluded that there is a link between cannibalism and an increase in stocking density in the green catfish seeds.
Kelabau fish (Osteochilus melanopleurus) is a freshwater fish that is widely found in Riau rivers, has high economic value and has prospects as a farmed fish. The number of deaths on the endogeneous feeding phase of larvae in kelabau fish maintenance led to low production rates. The aim of the study is to determine the effect of different temperatures on the absorption rate of the yolk of Osteochilus melanopleurus fish eggs. The method used is an experimental method at the laboratories scale using 4 (four) temperature treatments, namely 27, 28, 29 and 30°C and 3 (three) tests using the Complete Randomized Design performed in January-October 2022 at the Fisheries Biology Laboratory, Faculty of Fisheries and Marine Science, Riau. The monitoring parameters carried out are as follows the yolk absorption rate, length growth, and yolk utilization efficiency. The results of the study obtained the fastest egg yolk absorption time was at temperature 30°C (102 hours) with the yolk absorption rate 2.93%, the length growth rate 0.679% and an egg yolk utilization efficiency 23.174%. It can be concluded that different temperatures affect the rate of yolk absorption in the Osteochilus melanopleurus larvae. The more the temperature increases, the metabolism also increases, thereby accelerating the absorption rate of the yolk of Osteochilus melanopleurus eggs.
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