Enzymatic activity of lipase in post-metamorphic phase bullfrogs
The knowledge of the digestive system of bullfrogs is an important step for the determination of their nutritional requirements throughout growth phases. With the objective of evaluating the enzymatic activity of lipase in the intestinal content of bullfrogs (Rana catesbeiana Shaw, 1802), 100 animal...
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Published in: | Scientia agricola Vol. 63; no. 5; pp. 439 - 443 |
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01-10-2006
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Abstract | The knowledge of the digestive system of bullfrogs is an important step for the determination of their nutritional requirements throughout growth phases. With the objective of evaluating the enzymatic activity of lipase in the intestinal content of bullfrogs (Rana catesbeiana Shaw, 1802), 100 animals with median weight of 3.6 g were distributed in stalls under controlled temperature and photoperiod. The frogs, selected at the post-metamorphic phase, received commercial extruded diet ad libitum throughout the 87-day experiment. The collections of the intestinal content were performed by the desensitization of the frogs in ice and water at 0ºC and subsequent isolation of the small intestine. Determination of lipase activity was performed with a commercial enzymatic kit (Lipase-Bioclin, MG, Brazil), first measured in samples taken at day three (3.46 UI). During the initial phase the bullfrog possesses low lipase hydrolysis capacity was found, having a specific activity of 217 UI mg-1. In the subsequent period both lipase activity and specific lipase activity continuously increased. Lipase activity as a function of bullfrog weight fell after day twenty and reached 0.33 UI g-1, for frogs of medium weight (179 g). Feed for bullfrogs at the post-metamorphic phase weighing more than 10 g can have larger amounts of ingredients containg lipids, due to the increased digestive capacity of these frogs.
O conhecimento do sistema digestório da rã-touro é um passo importante para a determinação de sua exigência nutricional nas diferentes fases de crescimento. Com o objetivo de avaliar a atividade enzimática da lipase no conteúdo intestinal da rã-touro (Rana catesbeiana Shaw, 1802), 100 animais com peso médio de 3,6 g foram distribuídos em baias-teste com temperatura e fotoperíodo controlados. As rãs, selecionadas na fase pos-metamórfica receberam ração extruzada comercial ad libitum. Durante 87 dias de experimento, 29 coletas (87 rãs) foram feitas em intervalos que variaram de um a oito dias. As rãs foram insensibilizadas em água e gelo a 0ºC para subseqüente isolamento do intestino delgado e retirada do conteúdo intestinal. Para determinação da atividade da lipase foram usados conjuntos enzimáticos da BIOCLIN. A atividade da lipase foi registrada no terceiro dia (3,46 UI). Na fase inicial, a rã-touro possui baixa capacidade de hidrólise para a lipase que teve atividade específica de 217 UI mg-1. No período subseqüente, observou-se aumento contínuo da atividade e da atividade específica da lipase. A atividade da lipase em função do peso da rã-touro depois do 20º dia apresentou redução contínua, alcançando valor de 0,33 UI g-1, registrado para rãs com peso médio de 179 g. As rações para rã-touro com peso superior a 10 g podem conter quantidades maiores de ingredientes que contenham lipídos, devido ao aumento da capacidade da digestão. |
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AbstractList | The knowledge of the digestive system of bullfrogs is an important step for the determination of their nutritional requirements throughout growth phases. With the objective of evaluating the enzymatic activity of lipase in the intestinal content of bullfrogs (Rana catesbeiana Shaw, 1802), 100 animals with median weight of 3.6 g were distributed in stalls under controlled temperature and photoperiod. The frogs, selected at the post-metamorphic phase, received commercial extruded diet ad libitum throughout the 87-day experiment. The collections of the intestinal content were performed by the desensitization of the frogs in ice and water at 0ºC and subsequent isolation of the small intestine. Determination of lipase activity was performed with a commercial enzymatic kit (Lipase-Bioclin, MG, Brazil), first measured in samples taken at day three (3.46 UI). During the initial phase the bullfrog possesses low lipase hydrolysis capacity was found, having a specific activity of 217 UI mg-1. In the subsequent period both lipase activity and specific lipase activity continuously increased. Lipase activity as a function of bullfrog weight fell after day twenty and reached 0.33 UI g-1, for frogs of medium weight (179 g). Feed for bullfrogs at the post-metamorphic phase weighing more than 10 g can have larger amounts of ingredients containg lipids, due to the increased digestive capacity of these frogs. The knowledge of the digestive system of bullfrogs is an important step for the determination of their nutritional requirements throughout growth phases. With the objective of evaluating the enzymatic activity of lipase in the intestinal content of bullfrogs (Rana catesbeiana Shaw, 1802), 100 animals with median weight of 3.6 g were distributed in stalls under controlled temperature and photoperiod. The frogs, selected at the post-metamorphic phase, received commercial extruded diet ad libitum throughout the 87-day experiment. The collections of the intestinal content were performed by the desensitization of the frogs in ice and water at 0ºC and subsequent isolation of the small intestine. Determination of lipase activity was performed with a commercial enzymatic kit (Lipase-Bioclin, MG, Brazil), first measured in samples taken at day three (3.46 UI). During the initial phase the bullfrog possesses low lipase hydrolysis capacity was found, having a specific activity of 217 UI mg-1. In the subsequent period both lipase activity and specific lipase activity continuously increased. Lipase activity as a function of bullfrog weight fell after day twenty and reached 0.33 UI g-1, for frogs of medium weight (179 g). Feed for bullfrogs at the post-metamorphic phase weighing more than 10 g can have larger amounts of ingredients containg lipids, due to the increased digestive capacity of these frogs. O conhecimento do sistema digestório da rã-touro é um passo importante para a determinação de sua exigência nutricional nas diferentes fases de crescimento. Com o objetivo de avaliar a atividade enzimática da lipase no conteúdo intestinal da rã-touro (Rana catesbeiana Shaw, 1802), 100 animais com peso médio de 3,6 g foram distribuídos em baias-teste com temperatura e fotoperíodo controlados. As rãs, selecionadas na fase pos-metamórfica receberam ração extruzada comercial ad libitum. Durante 87 dias de experimento, 29 coletas (87 rãs) foram feitas em intervalos que variaram de um a oito dias. As rãs foram insensibilizadas em água e gelo a 0ºC para subseqüente isolamento do intestino delgado e retirada do conteúdo intestinal. Para determinação da atividade da lipase foram usados conjuntos enzimáticos da BIOCLIN. A atividade da lipase foi registrada no terceiro dia (3,46 UI). Na fase inicial, a rã-touro possui baixa capacidade de hidrólise para a lipase que teve atividade específica de 217 UI mg-1. No período subseqüente, observou-se aumento contínuo da atividade e da atividade específica da lipase. A atividade da lipase em função do peso da rã-touro depois do 20º dia apresentou redução contínua, alcançando valor de 0,33 UI g-1, registrado para rãs com peso médio de 179 g. As rações para rã-touro com peso superior a 10 g podem conter quantidades maiores de ingredientes que contenham lipídos, devido ao aumento da capacidade da digestão. |
ArticleNumber | 439 |
Author | Braga, Luís Gustavo Tavares Oliveira, Maria Goreti de Almeida Lima, William Cardoso Euclydes, Ricardo Frederico |
AuthorAffiliation | Universidade Federal de Viçosa UESC |
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Author_xml | – sequence: 1 givenname: Luís Gustavo Tavares surname: Braga fullname: Braga, Luís Gustavo Tavares organization: UESC, Brasil – sequence: 2 givenname: Maria Goreti de Almeida surname: Oliveira fullname: Oliveira, Maria Goreti de Almeida organization: UFV, Brasil – sequence: 3 givenname: William Cardoso surname: Lima fullname: Lima, William Cardoso organization: UFV – sequence: 4 givenname: Ricardo Frederico surname: Euclydes fullname: Euclydes, Ricardo Frederico organization: UFV |
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Cites_doi | 10.1016/S0044-8486(99)00270-7 10.1111/j.1095-8649.2001.tb00527.x 10.1670/153-02N 10.1590/S1516-35982001000500001 10.1111/j.1365-2109.1996.tb01295.x 10.1016/0300-9629(83)90079-8 10.1590/S1516-35982004000100003 10.1590/S1516-35982000000100002 10.1590/S1516-35982005000600005 10.1016/j.cbpb.2006.01.015 10.1016/S0044-8486(01)00888-2 10.1152/ajplegacy.1932.100.2.266 10.1590/S1516-35982004000400001 10.1016/j.cbpc.2003.12.003 10.1590/S1516-35982003000300001 10.1016/0044-8486(90)90135-A |
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DocumentTitleAlternate | Atividade enzimática da lipase em rã-touro na fase pós-metamórfica |
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Keywords | digestive enzyme specific activity frog culture atividade específica enzima digestiva ranicultura |
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Aquaculture contributor: fullname: FURNÉ, M.; HIDALGO, M.C.; L'OPEZ, A.; GARCÍA-GALLEGO, M.; MORALES, A.E.; DOMENZAIN, A.; DOMENZAIN'E, J.; SANZ, A – volume: 30 start-page: 147 year: 2004 end-page: 154 article-title: Determinação da energia metabolizável de alguns alimentos para rã-touro (Rana catesbeiana) publication-title: Boletim do Instituto de Pesca contributor: fullname: RODRIGUES, M.L.; MOURA, O.M.; LIMA, S.L – volume: 211 start-page: 241 year: 2002 end-page: 251 article-title: Ontogenic development of the intestinal enzymes of cultured Nile tilapia, Oreochromis niloticus L publication-title: Aquaculture contributor: fullname: TENGJAROENKUL, B.; SMITH, B.J.; SMITH, S.A.; CHATREEWONGSIN, U – volume: 137B start-page: 331 year: 2004 end-page: 339 article-title: Digestive enzymes and metabolic profile of Pseudoplatystoma corruscans (Teleostei: Siluriformes) in response to diet composition publication-title: Comparative Biochemistry and Physiology contributor: fullname: LUNDSTEDT, L.M.; MELO, J.F.B.; MORAES, G – volume: 32 start-page: 505 year: 2003 end-page: 511 article-title: Desempenho zootécnico e percentual de consumo de alimento de rã-touro (Rana catesbeiana) na fase de recria (pós-metamorfose) do sistema anfigranja publication-title: Revista da Sociedade Brasileira de Zootecnia contributor: fullname: LIMA, S.L.; CASALI, A.P.; AGOSTINHO, C.A – volume: 100 start-page: 266 year: 1932 end-page: 273 article-title: The specificity of pancreatic lipase: its appearance in the blood after pancreatic injury publication-title: American Journal of Physiology contributor: fullname: CHERRY, I.S.; CRANDALL JR., L.A – volume: 30 start-page: 1135 year: 2001 end-page: 1142 article-title: Estufas climatizadas para experimentos ambientais com rãs, em gaiolas publication-title: Revista da Sociedade Brasileira de Zootecnia contributor: fullname: FIGUEIREDO, M.R.C.; LIMA, S.L.; AGOSTINHO, C.A.; BAÊTA, F.C.; WEIGERT, S.C – volume: 33 start-page: 821 year: 2004 end-page: 827 article-title: Atividade da tripsina em rã-touro na fase pós-metamórfica1 publication-title: Revista da Sociedade Brasileira de Zootecnia contributor: fullname: BRAGA, L.G.T.; OLIVEIRA, M.G.A.; LIMA, W.C.; EUCLYDES, R.F – volume: 27 start-page: 623 year: 1996 end-page: 630 article-title: Effects of different dietary lipidis on growth and tissue fatty acid changes in try of the carp Catla catla (Hamilton) publication-title: Aquaculture Research contributor: fullname: MUKHOPADHYAY, P.K.; ROUT, S.K – volume: 27 start-page: 203 year: 1998 end-page: 209 article-title: Valor nutritivo de alguns alimentos para rã-touro (Rana catesbeiana Shaw, 1802) na fase de recria publication-title: Revista da Sociedade Brasileira de Zootecnia contributor: fullname: BRAGA, L.G.T.; LIMA, S.L.; DONZELE, J.L.; CASTRO, J.C – year: 1999 publication-title: Ranicultura: análise da cadeia produtiva contributor: fullname: LIMA, S.L.; CRUZ, T.A.; MOURA, O.M – volume: 89 start-page: 315 year: 1990 end-page: 325 article-title: Studies on the digestive lipases of milkfish, Chanos chanos publication-title: Aquaculture contributor: fullname: BORLONGAN, I.G – publication-title: Aquaculture: National Aquaculture Sector Overview – volume: 310 start-page: 384 year: 1941 end-page: 421 article-title: Isohering und kristallisation des gõrungs ferments enolase publication-title: Biochemistry Zoology contributor: fullname: WARBURG, O.; 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GOMIDE, A.T.M.; MENIN, E |
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Title | Enzymatic activity of lipase in post-metamorphic phase bullfrogs |
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