Body Tactile Stimulation Reduces the Effects of High Stocking Density on the Welfare of Nile Tilapia (Oreochromis niloticus)

Gauy, Ana Carolina dos Santos; Bolognesi, Marcela Cesar; Gonçalves-de-Freitas, Eliane

doi:10.3390/fishes8060320

Cited by 4 publications

(1 citation statement)

References 66 publications

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“…Having high stocking densities can lead to fish dying because they do not have enough space to move around in research containers. According to Gauy et al, (2023), competition for space could affect fish growth, because with different stocking densities in containers that have the same area it was suspected that there was competition in terms of opportunities to get feed. Based on the research results, the highest absolute weight growth was also accompanied by the highest feed efficiency value Domestication of Belontia Hasselti with Different Densities Using Zeolite Filter Media in Recirculation System ://jazindia.com https e online at: ilabl Ava -276 -at 16.91%.…”

Section: Blood Glucose Level Of B Hasseltimentioning

confidence: 99%

Domestication of Belontia Hasselti with Different Densities Using Zeolite Filter Media in Recirculation System

Yonarta,

Taqwa,

Oganda

2023

J. Adv. Zool.

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Belontia hasselti have not been widely cultivated and still depend on catching from nature. Community needs require the cultivation of B. hasselti that are still wild to satisfy their needs. Things that need to be considered in the acclimatization process for the domestication process are stocking density and the right cultivation technology system to support the survival rate of the B. hasselti. This study aimed to determine the best stocking density during the domestication process of B. hasselti using zeolite filter media in a recirculation system. This study used a completely randomized design with five treatments and three replications. The treatments given differences in stocking density were 1 (P1), 2 (P2), 3 (P3), 4 (P4), and 5 (P5) fish L-1. The results of this study showed that the best stocking density was in P1 (1 fish L-1) tail resulted in 91% survival rate, absolute weight growth at 3.17 g, absolute length growth at 0.18 cm, and feed efficiency at 16.91%. The water quality during the study was still within the tolerance limits for B. hasselti, i.e. temperature 27.4-27.6oC, pH 6.1-7.8, dissolved oxygen 5.4-5.5 mg L-1, and ammonia 0.06-0.1 mg L-1.

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Section: Blood Glucose Level Of B Hasseltimentioning

confidence: 99%

Domestication of Belontia Hasselti with Different Densities Using Zeolite Filter Media in Recirculation System

Yonarta,

Taqwa,

Oganda

2023

J. Adv. Zool.

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Anti-parasitic activity of garlic (Allium sativum) and onion (Allium cepa) extracts against Dactylogyrus spp. (Monogenean) in Nile tilapia (Oreochromis niloticus): Hematology, immune response, histopathological investigation, and inflammatory cytokine genes of gills

Reda,

Khalil,

Elhady

et al. 2024

BMC Vet Res

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Background Gills monogenean infestation causes significant mortalities in cultured fishes as a result of respiratory manifestation. Medicinal plants are currently being heavily emphasized in aquaculture due to their great nutritional, therapeutic, antimicrobial activities, and financial value. Methods The current study is designed to assess the effect of garlic (Allium sativum) and onion (Allium cepa) extracts as a water treatment on the hematological profile, innate immunity, and immune cytokines expression besides histopathological features of gills of Nile tilapia (Oreochromis niloticus L.) infected with gills monogenetic trematodes (Dactylogyrus sp.). Firstly, the 96-hour lethal concentration 50 (96 h-LC50) of garlic extract (GE) and onion extract (OE) were estimated to be 0.4 g/ L and 3.54 g/ L for GE and OE, respectively. Moreover, the in-vitro anti-parasitic potential for (GE) was found between 0.02 and 0.18 mg/mL and 0.4 to 1.8 mg/mL for OE. For the therapeutic trial, fish (n = 120; body weight: 40–60 g) were randomly distributed into four groups in triplicates (30 fish/group, 10 fish/replicate) for 3 days. Group1 (G1) was not infected or treated and served as control. G2 was infected with Dactylogyrus spp. and not exposed to any treatment. G3, G4 were infected with Dactylogyrus sp. and treated with 1/10 and 1/5 of 96 h LC50 of OE, respectively. G5, G6 were infected with Dactylogyrus sp. and treated with 1/10 and 1/5 of 96 h LC50 of GE, respectively. Results No apparent signs or behaviors were noted in the control group. Dactylogyrus spp. infected group suffered from clinical signs as Pale color and damaged tissue. Dactylogyrus spp. infection induced lowering of the hematological (HB, MCH, MCHC and WBCs), and immunological variables (lysozyme, nitric oxide, serum Anti- protease activities, and complement 3). the expression of cytokine genes IL-ß and TNF-α were modulated and improved by treatment with A. sativum and A. cepa extracts. The obtained histopathological alterations of the gills of fish infected with (Dactylogyrus spp.) were hyperplasia leading to fusion of the gill filament, lifting of epithelial tissue, aneurism and edema. The results indecated that G4 and G5 is more regenarated epithelium in compare with the control group. Conclusion A. sativum and A. cepa extracts enhance the blood profile and nonspecific immune parameters, and down-regulated the expression level of (IL-1β and TNF-α).

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Akuakültürde Balık Refahı

Bozkurt

2024

Journal of Limnology and Freshwater Fisheries Research

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Hızla büyüyen mavi ekonomi faaliyetlerinin deniz ve okyanus ekosistemleri üzerindeki etkilerine küresel ısınma ve pandemiler gibi kontrol edilmesi zor çevre krizlerinin etkileri eklenmiştir. Böylece, su ekosistemlerinde balık refahına ilişkin riskler artmıştır. Mevcut araştırmalar balıklarda bilinç ve duyarlılık kapasitesinin varlığını tanımlamış ve onların ağrı, acı ve ızdırap hissedebildiklerini ortaya koymuştur. Ayrıca araştırmalar balıklar ile yetiştirme çevresi arasındaki etkileşimlerin balıklarda stres yanıtları oluşturduğu ve refah kayıplarına neden olduğunu göstermektedir. Bu çalışmada balık refahının kavram, metodoloji ve yenilikçi refah değerlendirme yaklaşımlarına ilişkin son bilimsel literatürün gözden geçirilmesi ve su ürünleri alanı çalışanları ile tüketicilerin balık refahına ilişkin farkındalığının arttırılması amaçlanmıştır. İlk olarak balıklarda bilinç, duyarlılık ve ağrı kavramları ile stres yanıtları açıklanmıştır. Daha sonra balıklarda refah ihtiyaçları ile refah göstergeleri sunulmuştur. Son olarak, balık refahının değerlendirilmesi için yenilikçi yaklaşımlara ve geliştirilen refah değerlendirme protokollerine bir bakış sağlanmış ve hayvan refahının izlenmesi yönünden hassas akuakültür alanının sunduğu potansiyel fırsatlar tartışılmıştır.

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Body Tactile Stimulation Reduces the Effects of High Stocking Density on the Welfare of Nile Tilapia (Oreochromis niloticus)

Cited by 4 publications

References 66 publications

Domestication of Belontia Hasselti with Different Densities Using Zeolite Filter Media in Recirculation System

Domestication of Belontia Hasselti with Different Densities Using Zeolite Filter Media in Recirculation System

Anti-parasitic activity of garlic (Allium sativum) and onion (Allium cepa) extracts against Dactylogyrus spp. (Monogenean) in Nile tilapia (Oreochromis niloticus): Hematology, immune response, histopathological investigation, and inflammatory cytokine genes of gills

Akuakültürde Balık Refahı

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