Leaching of feed nutrients, economic losses to fish farming

Falayi, B.A.; Balogun, A. M.; Adebayo, Olabode Thomas; Madu, C.T.; Eyo, A.A.

doi:10.4314/jas.v18i2.19953

Cited by 4 publications

(4 citation statements)

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“…Calculations of the growth performance and nutrient utilization data were according to Falayi [12]. Survival rate (SR%)was calculate as follows:…”

Section: Growth Studiesmentioning

confidence: 99%

Apparent and True Digestibility in Clarias gariepinus, Burchell, 1822 FED Soyabean Meal Based Diets Supplemented with Protease

Oyedokun,

Ogunwole,

Adene

et al. 2024

Asian J. Res. Agric. Forestry.

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Soyabean meal (SBM) could be a suitable replacement for the expensive fishmeal but for its low digestibility in fish. However, protease supplementation could improve digestibility of SBM based diets. Therefore, apparent and true digestibility in Clarias gariepinus fed SBM based diets supplemented with protease were investigated. Six diets containing varied inclusion levels of protease (ppm) in solvent extracted soybean-based diets (SESBD) were formulated; Control (without protease), SS100 (100), SS200 (200), SS300 (300), SS400 (400), SS500 (500). The Clarias gariepinus (n=720) weighing 12.00±0.10g were fed to satiation with the diets for 12 weeks. Each treatment was in triplicate. Protease supplementation significantly (P<0.05) influenced the weight gain of C. gariepinus with the higher value in fish fed SS400 (44.63±3.13) and least value in control diet (32.03±0.65). FCR had a significantly (P<0.05) least value in C. gariepinus fed SS400 (1.62±0.18) but similar (P>0.05) to C. gariepinus diet SS300 (1.88±0.11). Supplemental protease in soyabean-based diet improved (P<0.05) apparent protein digestibility of C. gariepinus on diet SS400 (87.38±1.10) but similar (P>0.05) to C. gariepinus on diet SS200 (87.29±0.97). Also, true lysine digestibility was enhanced with protease supplementation in soybean-based diet with the higher value in diet SS200 (95.90±0.07). Optimal FCR occurred SESBD of 350ppm dietary inclusion (R2= 0.8147) of protease. The findings suggest that, protease supplementation in solvent extracted soyabean based diet could improve growth performance and amino acid digestibility in C. gariepinus at 350ppm inclusion level.

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“…Calculations of the growth performance and nutrient utilization data were according to Falayi [12]. Survival rate (SR%)was calculate as follows:…”

Section: Growth Studiesmentioning

confidence: 99%

Apparent and True Digestibility in Clarias gariepinus, Burchell, 1822 FED Soyabean Meal Based Diets Supplemented with Protease

Oyedokun,

Ogunwole,

Adene

et al. 2024

Asian J. Res. Agric. Forestry.

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show abstract

“…In order to sustain the aquaculture production, nutrition research must be directed towards minimizing the inclusion level of such imported ingredients in fish feeds formulation. Use of locally available or unconventional feed ingredients such as root and tubers which could probably improve the feed efficiency and reduce the feed cost in aquaculture [17,18,19].…”

Section: Issn: 2638-2210mentioning

confidence: 99%

Preliminary study to evaluate the efficacy of bambara groundnut (Vigna subterranea(L.) Verdc.) meal as the dietary carbohydrate source in nile tilapia, Oreochromis niloticus

Katya¹,

Borsra²,

Kuppusamy³

et al. 2017

Madridge J Aquac Res Dev

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The present experiment was conducted to evaluate the effects of bambara groundnut meal (BGM) as the dietary carbohydrate source and as an alternative of dietary wheat flour in nile tilapia, Oreochromis niloticus. Results from the nutrient profile analysis of various carbohydrate ingredients showed, higher crude protein and lipid content in bambara groundnut meal followed by wheat flour, dextrin and corn starch. Whereas, dextrin was found to content lower amount of moisture compared to bambara groundnut meal, wheat flour and dextrin. Four isonitrogeonus and isocaloric diets were formulated to replace wheat flour using bambara groundnut meal at 0 (CON), 25 (BGM 25 ), 50 (BGM 50 ), and 100% (BGM 100 ). Nile tilapia fish individual initial weight averaging 20±0.5 g (mean ± standard deviation) were fed one of the four experimental diets at 2~3% of body weight per day for eight weeks. At the end of the experiment, there were no significant differences in the average weight gain (WG) and specific growth rate (SGR) among the group of fish fed Control, BGM 25 and BGM 50 diets (P < 0.05). However, WG and SGR of fish fed BGM 100 diet was significantly lower than that of fish fed BGM 25 diet (P < 0.05). Crude protein and crude lipid content in the fish whole body proximate composition was not much affected by the BGM inclusion as a carbohydrate source. Therefore, the overall observations from the current experiment may suggest the potential of bambara groundnut meal as the carbohydrate ingredient in omnivorous fish diets. The optimum replacement level of wheat flour using bambara groundnut meal could be greater than 50 but less than 100% of diet in nile tilapia, Oreochromis niloticus.

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“…Evaluation of utilizing commercial sinking pellet feed for grow-out of golden rabbitfish has been conducted [10]. The main concern of using sinking feed is the nutrients loss [11,12] different from floating feed which is more stable in water and more digestible so that nutrients loading into the water can be minimized [13]. The benefit of applying floating diets for pelagic fish implies reduction of economic losses and environmental effect [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Growth performances and gonadal development of golden rabbitfish, Siganus guttatus fed with two types of floating diets in sea cages

Makmur,

Ramadhan,

Nawang

et al. 2023

BIO Web Conf.

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A feeding trial was designed to evaluate the effects of utilizing floating pellets on the growth performances, feed utilization and gonadal maturation of the golden rabbitfish, Siganus guttatus. The treatments were two kinds of commercial floating pellet containing different crude protein (CP) levels which were 26% (FD1) and 33% (FD2). The tested diets were fed to golden rabbitfish. Golden rabbitfish with initial body weight of 239.7±4.8 g were stocked into six sea cages with size of 2x2x2 m3 with density of 50 fishes/cage. The feeding trial lasted for 120 days with results showed that the growth performances of weight gain and specific growth rate were significantly higher (P<0.05) in fish fed FD2 diet (55.0±3.7% and 0.37±0.02 %/d) compared to those fed with FD1 diet (41.7±1.6 and 0.29±0.01%/d), respectively. Both female and male fishes had developed gonad at the end of feeding trial. The gonadosomatic index (GSI) for spermatid significantly higher (<0.05) in fish fed FD2 (4.8±0.6%) than FD1 group (3.4±0.3%). Similarly, the GSI for oocyte of fish fed FD2 diet (8.9±1.0%) was significantly higher than the group fed FD1 diet (4.2±0.5%). The FD2 diet produced higher protein content in the whole body and fillet. In contrast, lipid content of whole body and fillet of fish fed FD1 diet was higher than FD2 diet. As conclusion, better growth performances and gonadal development was found in fish fed FD2 diet, a floating diet containing approximately 33% CP.

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Leaching of feed nutrients, economic losses to fish farming

Cited by 4 publications

References 0 publications

Apparent and True Digestibility in Clarias gariepinus, Burchell, 1822 FED Soyabean Meal Based Diets Supplemented with Protease

Apparent and True Digestibility in Clarias gariepinus, Burchell, 1822 FED Soyabean Meal Based Diets Supplemented with Protease

Preliminary study to evaluate the efficacy of bambara groundnut (Vigna subterranea(L.) Verdc.) meal as the dietary carbohydrate source in nile tilapia, Oreochromis niloticus

Growth performances and gonadal development of golden rabbitfish, Siganus guttatus fed with two types of floating diets in sea cages

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