Advantages and disadvantages of using more sustainable ingredients in fish feed

Zlaugotne, Beate; Pubule, Jeļena; Blumberga, Dagnija

doi:10.1016/j.heliyon.2022.e10527

Cited by 18 publications

(15 citation statements)

References 37 publications

(40 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, in modern aquafeed formulation, traditional protein sources like FM have been replaced by more sustainable ones, often affecting feed digestibility and palatability [57], resulting in aquafeed wastage, and economic and environmental issues [15,33]. Since the use of natural feed attractants can only partially mitigate this problem, it is crucial to identify and test the efficiency of a set of new feed attractants intended for fish diets [10,19].…”

Section: Discussionmentioning

confidence: 99%

“…However, the production of more sustainable diets often results in lower diet palatability, affecting fish growth, water quality, and farm economics [15]. In fact, it is estimated that a considerable portion of feed administered in fish farms is not ingested by fish, ending in wastewater outflows and contributing to eutrophication of aquatic ecosystem and producing economic losses [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Application of Synthetic Flavors in Zebrafish (Danio rerio) Rearing with Emphasis on Attractive Ones: Effects on Fish Development, Welfare, and Appetite

Conti,

Zarantoniello,

Antonucci

et al. 2023

Animals

View full text Add to dashboard Cite

The aim of the present study was to test synthetic flavors as potential feed attractants in zebrafish (Danio rerio) during early development. Six experimental groups were set up in triplicate: (i) a CTRL group fed a zebrafish commercial diet; (ii) a PG group fed a control diet added with Propylene Glycol (PG); (iii) A1+ and A2+ groups fed a control diet added with 1% of the two attractive flavors (A1+ cheese odor made by mixing Propylene Glycol (PG) with the aromatic chemicals trimethyamine, 2-acetylpyrazine, 2-acetylpyridine, and dimethyl sulfide; and A2+ caramel odor, made of PG mixed with the aromatic chemicals vanillin, maltol, cyclotene, acetoin, butyric acid, and capric acid with traces of both gamma-octalactone and gamma-esalactone) or the repulsive flavor (A− coconut odor, made by mixing PG with the aromatic chemicals gamma-eptalactone, gamma-nonalactone, delta-esalactone, and vanillin with trace of both delta-octalactone and maltol), respectively; (iv) an ROT group fed the two attractive diets, each administered singularly in a weekly rotation scheme. All the tested synthetic flavors did not affect the overall health of larval and juvenile fish and promoted growth. Due to the longer exposure time, results obtained from the juvenile stage provided a clearer picture of the fish responses: zebrafish fed both attractive diets showed higher appetite stimulus, feed ingestion, and growth, while the brain dopaminergic activity suggested the A2+ diet as the most valuable solution for its long-lasting effect over the whole experiment (60-day feeding trial, from larvae to adults). The present study provided important results about the possible use of attractive synthetic flavors for aquafeed production, opening new sustainable and more economically valuable opportunities for the aquaculture sector.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Application of Synthetic Flavors in Zebrafish (Danio rerio) Rearing with Emphasis on Attractive Ones: Effects on Fish Development, Welfare, and Appetite

Conti,

Zarantoniello,

Antonucci

et al. 2023

Animals

View full text Add to dashboard Cite

show abstract

“…Some plant ingredients are possible alternatives that can be used in fish feed without compromising the nutritional quality of the feed (El-Sayed, 1999). Between 1990 and 2020, the composition of fish feed shifted towards the use of plant resources in fish feed, as these resources are considered more efficient, sustainable and economically viable (Zlaugotne et al, 2022). However, few studies have investigated the effects of plant leaf and agro-industrial by-product feed ingredients on digestibility and growth performance in tilapia produced in Rwanda, where there is an emerging need for suitable and sustainable (plant leaves and agriculture by-products) and novel feed ingredients for aquaculture.…”

Section: Plant-based Feed Sourcesmentioning

confidence: 99%

Evaluation of locally available feed resources for Nile tilapia (Oreochromis niloticus) in Rwanda

Niyibizi¹

2023

Acta Universitatis Agriculturae Sueciae

View full text Add to dashboard Cite

Aquaculture was introduced in Rwanda in the 1940s as an extensive pond-based system but the sector has gained in popularity during the past two decades, resulting in greater numbers of fish ponds and a corresponding increase in demand for quality fish feeds for sustainable aquaculture production. The aim of this thesis was to identify, sample and evaluate the nutritive value of some locally available feed ingredients that could be used by fish farmers producing Nile tilapia. An initial countrywide survey revealed that a semi-intensive farming system prevails (81% of total production) in Rwanda, three main fish species are cultured (Nile tilapia (Oreochromis niloticus) (most common), common carp (Cyprinus carpio) and North African catfish (Clarias gariepinus)) and around 31 feed ingredients are used, either individually or in mixtures in supplementary tilapia feeds. The nutrient content of local feed resources was evaluated. Digestibility trials in which fishmeal protein (reference diet, RD) was partly replaced with protein from spent brewer’s grain (SBG), spent brewer’s yeast (SBY), sweet potato leaf meal (SPLM), kidney bean leaf meal (KBLM) or wheat middlings (WM) showed that apparent digestibility (AD) of crude protein was highest for diets with SPLM and SBG (83%), followed by RD and SBY (78-82%) and then KBLM and WM (69-73%). Mean AD of indispensable amino acids (ADIAA) in the experimental diets was high (range 73-87%), and was above 81% for SPLM, SBG,RD and SBY. Weight gain, final body weight and specific growth rate were high and comparable to the control in fish fed SPLM, SBY, and SBG, but low in fish fed WM and KBLM. Hepato-somatic index and viscero-somatic index did not differ between diets, but red and white blood cell counts indicated a tendency for possible negative effects of KBLM on blood physiology in tilapia. These results suggest that SPLM, SBY, and SBG protein can replace fishmeal in Nile tilapia diets without compromising growth, feed utilisation or body indices, thus acting as a valuable local protein source for sustainable tilapia production.

show abstract

“…A significant increase in consumer interest in milkfish due to its delicious and affordable meat taste will impact milkfish aquaculture, especially in milkfish feed. Fish feed quality is key in impacting the aquaculture water environment (Kong et al, 2020;Rombenso et al, 2022;Zlaugotne et al, 2022). Feed requires good nutrition, such as carbohydrate, fat, and protein levels in milkfish (Beveridge et al, 2013).…”

Section: Seasonings and Manufacturingmentioning

confidence: 99%

Research Implementation of the Milkfish Feed Development from the Edible Mushrooms for a Digital-Based Module in Biotechnology Concept for High School Students

Fauziyah,

Rahman KN,

Khastini

2023

J. Penelit. Pembelajaran IPA

View full text Add to dashboard Cite

This study aimed to analyze the results of research on the content of edible mushrooms as milkfish feed to be implied as a digital module, a learning source for biotechnology concepts for high school students. The study was carried out through stages: identifying the problems in biotechnology concepts learning activities in four state senior high schools in Banten Province, identifying research methods and products through experiments, choosing and adapting research findings as the learning source content, and applying and developing research findings as learning. An interview grid and questionnaire were used to collect the data, and a qualitative analysis was used to interpret the questionnaires' results.

show abstract

Advantages and disadvantages of using more sustainable ingredients in fish feed

Cited by 18 publications

References 37 publications

The Application of Synthetic Flavors in Zebrafish (Danio rerio) Rearing with Emphasis on Attractive Ones: Effects on Fish Development, Welfare, and Appetite

The Application of Synthetic Flavors in Zebrafish (Danio rerio) Rearing with Emphasis on Attractive Ones: Effects on Fish Development, Welfare, and Appetite

Evaluation of locally available feed resources for Nile tilapia (Oreochromis niloticus) in Rwanda

Research Implementation of the Milkfish Feed Development from the Edible Mushrooms for a Digital-Based Module in Biotechnology Concept for High School Students

Contact Info

Product

Resources

About