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Registro Completo |
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
19/11/2019 |
Data da última atualização: |
19/11/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA, W. de S. e; HISANO, H.; MATTIOLI, C. C.; TORRES, I. F. A.; PAES-LEME, F. de O.; LUZ. R. K. |
Afiliação: |
WALISSON DE SOUZA E SILVA, UFMG; HAMILTON HISANO, CNPMA; CRISTIANO CAMPOS MATTIOLI, UFMG; ISABELA FERNANDA ARAUJO TORRES, UFMG; FABIOLA DE OLIVEIRA PAES-LEME, UFMG; RONALD KENNEDY LUZ, UFMG. |
Título: |
Effects of cyclical short-term fasting and refeeding on juvenile Lophiosilurus alexandri, a carnivorous Neotropical catfish. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Aquaculture, v. 505, p. 12-17, 2019. |
ISSN: |
0044-8486 |
DOI: |
https://doi.org/10.1016/j.aquaculture.2019.02.047 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The effects of different feeding strategies on the growth rate and hematology of Lophiosilurus alexandri were investigated. An experiment was carried out at the Laboratório de Aquacultura, Universidade Federal Minas Gerais, with nine hundred juvenile L. alexandri (length 4.3 ± 0.3, weight cm 0.9 ± 0.2 g) fed exclusively ex- truded dry diet and kept in fifteen 30-L cultivation tanks in a recirculating aquaculture system. The design was completely randomized with five replicates of each of three feeding treatments: every day of the week (control), six days of the week (F6:1) and five days of the week (F5:2). The following were calculated at the end of the experiment: survival, daily weight gain (DWG), total length (TL), daily feed intake (DFI), feed conversion rate (FCR), specific growth rate (SGR), final body weight (FBW), condition factor (K), protein efficiency ratio (PER), nitrogen retention (NR) and the hepatosomatic index (HSI). Blood samples were taken after 42 days (prior to feed restriction) and at 45 days (after feed restriction of one or two days), and levels of hematocrit, total plasma, hemoglobin, erythrocytes, leukocytes glucose, cholesterol and triglycerides determined. Data were submitted to ANOVA and means compared by the Tukey test (5%). No significant differences were found for survival, FCR, DWG, TL, FBW, K, and SGR. The highest DFI and HSI values were recorded in the control treatment, while PER and NR were highest in the F5.2 treatment. The highest hematocrit values were observed for the control and F6:1 treatments. In all treatments, the values for hematocrit, total protein, leukocytes and glucose were lower after fasting. The highest values for leukocytes were for the control and F6.1 treatments prior to fasting, while after fasting the control treatment was highest. For the F5:2 treatment, the highest value for erythrocytes was after fasting. The highest values for cholesterol were after fasting for all treatments. In conclusion, L. alexandri exhibits compensatory growth in relation to the two short-term food restriction treatments tested. The species adapted to dietary strategies and maintained hematological and biochemical parameters close to those of the control groups when returned to feeding. MenosAbstract: The effects of different feeding strategies on the growth rate and hematology of Lophiosilurus alexandri were investigated. An experiment was carried out at the Laboratório de Aquacultura, Universidade Federal Minas Gerais, with nine hundred juvenile L. alexandri (length 4.3 ± 0.3, weight cm 0.9 ± 0.2 g) fed exclusively ex- truded dry diet and kept in fifteen 30-L cultivation tanks in a recirculating aquaculture system. The design was completely randomized with five replicates of each of three feeding treatments: every day of the week (control), six days of the week (F6:1) and five days of the week (F5:2). The following were calculated at the end of the experiment: survival, daily weight gain (DWG), total length (TL), daily feed intake (DFI), feed conversion rate (FCR), specific growth rate (SGR), final body weight (FBW), condition factor (K), protein efficiency ratio (PER), nitrogen retention (NR) and the hepatosomatic index (HSI). Blood samples were taken after 42 days (prior to feed restriction) and at 45 days (after feed restriction of one or two days), and levels of hematocrit, total plasma, hemoglobin, erythrocytes, leukocytes glucose, cholesterol and triglycerides determined. Data were submitted to ANOVA and means compared by the Tukey test (5%). No significant differences were found for survival, FCR, DWG, TL, FBW, K, and SGR. The highest DFI and HSI values were recorded in the control treatment, while PER and NR were highest in the F5.2 treatment. The high... Mostrar Tudo |
Palavras-Chave: |
Blood biochemistry; Peixe-gato. |
Thesagro: |
Hematologia; Nutrição Animal; Peixe de Água Doce; Taxa de Crescimento. |
Thesaurus Nal: |
Animal nutrition; Aquaculture; Catfish; Compensatory growth; Hematologic tests; Refeeding; Starvation. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 03339naa a2200361 a 4500 001 2114623 005 2019-11-19 008 2019 bl uuuu u00u1 u #d 022 $a0044-8486 024 7 $ahttps://doi.org/10.1016/j.aquaculture.2019.02.047$2DOI 100 1 $aSILVA, W. de S. e 245 $aEffects of cyclical short-term fasting and refeeding on juvenile Lophiosilurus alexandri, a carnivorous Neotropical catfish.$h[electronic resource] 260 $c2019 520 $aAbstract: The effects of different feeding strategies on the growth rate and hematology of Lophiosilurus alexandri were investigated. An experiment was carried out at the Laboratório de Aquacultura, Universidade Federal Minas Gerais, with nine hundred juvenile L. alexandri (length 4.3 ± 0.3, weight cm 0.9 ± 0.2 g) fed exclusively ex- truded dry diet and kept in fifteen 30-L cultivation tanks in a recirculating aquaculture system. The design was completely randomized with five replicates of each of three feeding treatments: every day of the week (control), six days of the week (F6:1) and five days of the week (F5:2). The following were calculated at the end of the experiment: survival, daily weight gain (DWG), total length (TL), daily feed intake (DFI), feed conversion rate (FCR), specific growth rate (SGR), final body weight (FBW), condition factor (K), protein efficiency ratio (PER), nitrogen retention (NR) and the hepatosomatic index (HSI). Blood samples were taken after 42 days (prior to feed restriction) and at 45 days (after feed restriction of one or two days), and levels of hematocrit, total plasma, hemoglobin, erythrocytes, leukocytes glucose, cholesterol and triglycerides determined. Data were submitted to ANOVA and means compared by the Tukey test (5%). No significant differences were found for survival, FCR, DWG, TL, FBW, K, and SGR. The highest DFI and HSI values were recorded in the control treatment, while PER and NR were highest in the F5.2 treatment. The highest hematocrit values were observed for the control and F6:1 treatments. In all treatments, the values for hematocrit, total protein, leukocytes and glucose were lower after fasting. The highest values for leukocytes were for the control and F6.1 treatments prior to fasting, while after fasting the control treatment was highest. For the F5:2 treatment, the highest value for erythrocytes was after fasting. The highest values for cholesterol were after fasting for all treatments. In conclusion, L. alexandri exhibits compensatory growth in relation to the two short-term food restriction treatments tested. The species adapted to dietary strategies and maintained hematological and biochemical parameters close to those of the control groups when returned to feeding. 650 $aAnimal nutrition 650 $aAquaculture 650 $aCatfish 650 $aCompensatory growth 650 $aHematologic tests 650 $aRefeeding 650 $aStarvation 650 $aHematologia 650 $aNutrição Animal 650 $aPeixe de Água Doce 650 $aTaxa de Crescimento 653 $aBlood biochemistry 653 $aPeixe-gato 700 1 $aHISANO, H. 700 1 $aMATTIOLI, C. C. 700 1 $aTORRES, I. F. A. 700 1 $aPAES-LEME, F. de O. 700 1 $aLUZ. R. K. 773 $tAquaculture$gv. 505, p. 12-17, 2019.
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Embrapa Meio Ambiente (CNPMA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
26/09/2019 |
Data da última atualização: |
07/04/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
MOSER, P.; SIMON, M. F.; MEDEIROS, M. B. de; GONTIJO, A. B.; COSTA, F. R. C. |
Afiliação: |
PAMELA MOSER, UNB; MARCELO FRAGOMENI SIMON, Cenargen; MARCELO BRILHANTE DE MEDEIROS, Cenargen; ALEXANDRE BAHIA GONTIJO, SERVIÇO FLORESTAL BRASILEIRO; FLÁVIA REGINA CAPELOTTO COSTA, INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA. |
Título: |
Interaction between extreme weather events and megadams increases tree mortality and alters functional status of Amazonian forests. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Journal of Applied Ecology, v. 56, p. 2641-2651, 2019. |
DOI: |
10.1111/1365-2664.13498 |
Idioma: |
Inglês |
Palavras-Chave: |
Dams; Flood tolerance; Functional traits; Precipitation anomaly; Root tissue density; Stomata density. |
Thesaurus NAL: |
Global warming; Tree mortality. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00838naa a2200265 a 4500 001 2112499 005 2020-04-07 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1111/1365-2664.13498$2DOI 100 1 $aMOSER, P. 245 $aInteraction between extreme weather events and megadams increases tree mortality and alters functional status of Amazonian forests.$h[electronic resource] 260 $c2019 650 $aGlobal warming 650 $aTree mortality 653 $aDams 653 $aFlood tolerance 653 $aFunctional traits 653 $aPrecipitation anomaly 653 $aRoot tissue density 653 $aStomata density 700 1 $aSIMON, M. F. 700 1 $aMEDEIROS, M. B. de 700 1 $aGONTIJO, A. B. 700 1 $aCOSTA, F. R. C. 773 $tJournal of Applied Ecology$gv. 56, p. 2641-2651, 2019.
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