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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
30/11/2022 |
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Data da última atualização: |
30/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, B. C.; ROSA, K. V.; MASSAGO, H.; SERAFINI, R. L.; VIEIRA, F. N. |
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Título: |
Nile tilapia nursery feeding management in a biofloc system. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Ciência e Agrotecnologia , Lavras, MG, v. 46, p. e00942, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Nile tilapia (Oreochromis niloticus) has an opportunistic omnivorous feeding behavior and studies have demonstrated the consumption of microorganisms by the species from bioflocs, especially in the early phases of life. One may thus assume that when reared in biofloc systems, there may be a reduction in the feeding rates in the Nile tilapia nursery system when compared to the ponds. This study evaluated the effects of different feeding management options in Nile tilapia nurseries in a biofloc system. A total of 700 fingerlings (2.37 ± 0.55 g) were stocked in 20 experimental units (100 L) and inoculated with mature biofloc for the evaluation of five different feeding management options. After 49 days, it was observed that the higher feed rates caused an increase in nitrogen compounds and solids in the water, worsening the feed conversion rate. Furthermore, the excess feed supplied to the tilapia in the biofloc caused a reduction in the utilization of protein nitrogen, an increase in the liver and visceral fat, in addition to an increase in the production of solids and consumption of alkalinizer by fish biomass. On the other hand, low feeding rates cause a decrease in the growth and uniformity of the tilapia juveniles. Taking the results into consideration, it is recommended to use the feed management option proposed in treatment TC (26% below the highest feed rate) in the tilapia nursery in the biofloc system. |
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Thesagro: |
Feeding rate; Oreochromis niloticus; super-intensive system; zootechnical performance. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02067naa a2200217 a 4500
001 1132814
005 2022-11-30
008 2022 bl uuuu u00u1 u #d
100 1 $aSILVA, B. C.
245 $aNile tilapia nursery feeding management in a biofloc system.$h[electronic resource]
260 $c2022
520 $aNile tilapia (Oreochromis niloticus) has an opportunistic omnivorous feeding behavior and studies have demonstrated the consumption of microorganisms by the species from bioflocs, especially in the early phases of life. One may thus assume that when reared in biofloc systems, there may be a reduction in the feeding rates in the Nile tilapia nursery system when compared to the ponds. This study evaluated the effects of different feeding management options in Nile tilapia nurseries in a biofloc system. A total of 700 fingerlings (2.37 ± 0.55 g) were stocked in 20 experimental units (100 L) and inoculated with mature biofloc for the evaluation of five different feeding management options. After 49 days, it was observed that the higher feed rates caused an increase in nitrogen compounds and solids in the water, worsening the feed conversion rate. Furthermore, the excess feed supplied to the tilapia in the biofloc caused a reduction in the utilization of protein nitrogen, an increase in the liver and visceral fat, in addition to an increase in the production of solids and consumption of alkalinizer by fish biomass. On the other hand, low feeding rates cause a decrease in the growth and uniformity of the tilapia juveniles. Taking the results into consideration, it is recommended to use the feed management option proposed in treatment TC (26% below the highest feed rate) in the tilapia nursery in the biofloc system.
650 $aFeeding rate
650 $aOreochromis niloticus
650 $asuper-intensive system
650 $azootechnical performance
700 1 $aROSA, K. V.
700 1 $aMASSAGO, H.
700 1 $aSERAFINI, R. L.
700 1 $aVIEIRA, F. N.
773 $tCiência e Agrotecnologia , Lavras, MG$gv. 46, p. e00942, 2022.
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