Effect of exogenous tryptophan on cannibalism, survival and growth in juvenile grouper, Epinephelus coioides

Hseu, Jinn–Rong; Lu, Fu I.; Su, Huei Meei; Wang, L.S; Tsai, Ching-Lin; Hwang, Pung‐Pung

doi:10.1016/s0044-8486(02)00503-3

Cited by 121 publications

(135 citation statements)

References 35 publications

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“…The study showed that supplementation of Ltryptophan (TRP) did not show any significant effect (P>0.05) in growth performance of pabda seed. The finding matches with the study of Hseu et al, (2003) which showed that the fish fed with TRP expressed lower growth rates and suggested that this could be due to increased brain serotonergic activity and decreased aggression and/or appetite. Papoutsoglou, Karakatsouli, and Chiras (2005) also reported that tryptophan (2%) supplemented diets resulted in depressed growth in rainbow trout.…”

Section: Discussionsupporting

confidence: 90%

“…Oncorhynchus mykiss (Winberg, et al, 2001), Amazonian characid, Brycon amazonicus (Wolkers, Serra, Hoshiba, & Urbinati, 2012), Rainbow trout (Overli, Harris, &Winberg, 1999 andLepage, et al, (2002), Atlantic cod (Hoglund, Bakke, Øverli, Winberg, & Nilsson, 2005). Hseu et al, 2003 found that dietary supplementation of L-tryptophan in juveniles rainbow trout diet leads to inhibit aggression behavior. Hoglund, Sorensen, Bakke, Nilsson, & Øverli, 2007 also revealed that L-tryptophan reduce cannibalism and stress induced anorexia in juvenile grouper and Lepage, Vilehez, Pottinger and Winberg, (2003) showed that it prevents stress induced cortisol surge.…”

Section: Discussionmentioning

confidence: 99%

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Biswas¹,

Patel²,

Saha³

2018

Turk. J. Fish. Aquat. Sci.

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A 30-days experiment was conducted to evaluate the efficacy of four chemo-attractants viz. DL-alanine, betaine, Ltryptophan (TRP) and inosine monophosphate (IMP) in the diet of Ompok bimaculatus during fry rearing. Fifty numbers of fifteen days weaned fry (0.0739±0.008 g; 2.32±0.06 cm) were stocked into each aerated aquariums (30.0 x 15.0 x 15.0 cm) following a completely randomized design (CRD) consisting of five treatments including control with three replicates each. Five iso-nitrogenous purified diets were prepared including four treatment diets with attractants (2%) replacing the cellulose and fed to the fishes twice a day. The highest growth was observed in the treatment fed with betaine supplemented diet followed by inosine monophosphate whereas, no significant difference was observed among control, DL-alanine and Ltryptophan supplementation. The highest survivability was found in L-tryptophan supplemented diet (48.66±2.4%) followed by betaine, DL-alanine, control and lowest was found in inosine monophosphate treatment (32.00±2.0). It has also observed that there was significant difference (P>0.05) in survival between L-tryptophan and betaine supplemented diets fed groups. It is concluded that the dietary tryptophan supplementation could be a promising aquaculture management strategy for carnivorous fish as it showed significantly better survival without affecting the growth.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Untitled

Biswas¹,

Patel²,

Saha³

2018

Turk. J. Fish. Aquat. Sci.

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“…Adanya keragaman ukuran yang cukup besar (Gambar 2), juga salah satu pemicu sifat kanibalisme. Seperti yang dilaporkan Hseu et al (2003) dasarnya faktor kanibalisme ini timbul oleh adanya naluri sifat dominan dari suatu individu terhadap individu lain yang diakibatkan oleh perbedaan kemampuan mendapatkan makanan dan laju pertumbuhan, meskipun makanan diberikan secara ad libitum.…”

Section: Hasil Dan Bahasanunclassified

PERFORMA PERTUMBUHAN KRABLET KEPITING BAKAU (Scylla olivacea) DENGAN FREKUENSI PEMBERIAN PAKAN BERBEDA PADA STADIA PENDEDERAN

Kamaruddin

Usman

Laining

2016

Jurnal Riset Akuakultur

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ABSTRAKSalah satu upaya untuk menekan tingkat kanibalisme dan memicu pertumbuhan krablet kepiting bakau adalah dengan pemberian pakan yang cukup, baik jumlah maupun mutu. Penelitian ini bertujuan mengevaluasi kinerja pertumbuhan dan sintasan krablet kepiting bakau dengan frekuensi pemberian pakan berbeda pada stadia pendederan. Hewan uji berupa krablet kepiting bakau dengan bobot awal 0,037 ± 0,005 g dan lebar karapas awal 3,43 ± 0,42 mm; menggunakan sembilan unit fiber gelas dengan ukuran masing-masing 1 m x 1 m x 0,5 m. Hewan uji ditebar dengan kepadatan 50 ekor/m 2 . Perlakuan yang diujicobakan adalah frekuensi pemberian pakan per hari, yaitu: (A) dua kali (pukul 08.00 dan 18.00), (B) tiga kali (pukul 08.00, 13.00, dan 18.00), dan (C) empat kali (pukul 08.00, 13.00, 18.00, dan 23.00). Pakan yang digunakan berupa pelet dengan kandungan protein kasar 46,5%; lemak 8,8%; dan energi total 18,8 MJ/kg. Dosis pakan harian sebanyak 30%-15% bobot badan secara menurun hingga akhir penelitian. Setelah lima minggu pemeliharaan didapatkan hasil yang menunjukkan bahwa pertumbuhan, sintasan, konsumsi pakan harian, rasio konversi pakan, dan rasio efisiensi protein tidak menunjukkan perbedaan yang nyata (P>0,05) di antara perlakuan. Namun demikian, pemberian pakan empat kali sehari cenderung menunjukkan pertumbuhan yang lebih cepat dan dengan ukuran krablet yang lebih seragam.

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“…It has been shown that supplementation of the feed with small amounts of Trp causes a reduction in stress in various cultivated species and improves their immune response [11]. It has been demonstrated that exogenous tryptophan decreases cannibalism, increases survival and improves growth in several fish species [12,13].…”

Section: Introductionmentioning

confidence: 99%

Effects of the Dietary Tryptophan and Aspartate on the Immune Response of Meagre (Argyrosomus regius) after Stress

González-Silvera

Herrera

Giráldez

et al. 2018

Fishes

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Stress is one of the main problems of farmed fish, where it has been seen to result in a variety of disorders and negative effects. It is considered very important to minimize such effects and one option is the use of dietary additives. In the present experiment, meagre (Argyrosomus regius) specimens were fed three different diets: a control diet consisting of a commercial feed, a tryptophan-supplemented diet and an aspartate-supplemented diet. For each diet, fish were divided into three subgroups: non-stressed (resting), exposed to crowding or air-exposed. Just before the stress, and one and six hours post-stress, serum samples were taken to study several immune parameters (protease, antiprotease, peroxidase and lysozyme) and the bactericidal activity against three fish-pathogenic bacteria (Vibrio angillarum, V. harveyi and Photobacterium damselae subsp. piscicida). The results demonstrated that feeding the animals with the supplemented diets modulates the seric immune parameters, particularly when animals were stressed by air exposure.

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Effect of exogenous tryptophan on cannibalism, survival and growth in juvenile grouper, Epinephelus coioides

Cited by 121 publications

References 35 publications

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Untitled

PERFORMA PERTUMBUHAN KRABLET KEPITING BAKAU (Scylla olivacea) DENGAN FREKUENSI PEMBERIAN PAKAN BERBEDA PADA STADIA PENDEDERAN

Effects of the Dietary Tryptophan and Aspartate on the Immune Response of Meagre (Argyrosomus regius) after Stress

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