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| Souto,Cristielle Nunes; Lemos,Marcos Vinicius Antunes de; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Lopes,Karina Ludovico de Almeida Martinez; Guimarães,Igo Gomes. |
| The optimal dietary digestible protein to energy ratio is critical for the success of fish farming. Considering that it provides the proper development of the animals, this study was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for goldfish fingerlings. Diets were formulated to contain 28.0, 35.0, 42.0 and 49.0% DP and 3,600 and 3,200 kcal/kg. The growth parameters evaluated were daily weight gain (DWG), feed intake (FI), feed conversion ratio (FCR), protein efficiency ratio (PER), protein productive value (PPV) and energy retention ratio (ERR) and specific growth rate (SGR). Regardless FI, all the parameters were affected by protein and energy levels and interaction between both factors was observed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy requirement; Feed intake; Growth protein requirement; Ornamental fish. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000600008 |
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| Lemos,Marcos Vinicius Antunes de; Arantes,Thiago Quirino; Souto,Cristielle Nunes; Martins,Graciela Pessoa; Araújo,Janaína Gomes; Guimarães,Igo Gomes. |
| The expansion in the market of ornamental fish depends on the intensification of production systems and the generation of appropriate technologies. Therefore, it is necessary to know the nutritional requirements of each species for the formulation of nutritionally balanced diets. A 30-day feeding trial was undertaken to evaluate the effects of different dietary digestible protein to energy ratio in diets for Betta splendens fingerlings. Fifty-six all-male B. splendens with 1.03 ± 0.11 g average weight were randomly stocked into 56 1L-aquaria in a completely randomized design with a 2 x 4 factorial arrangement, comprising eight treatments and seven replication. Each fish was considered an experimental unit. Diets were formulated to contain 28.0, 35.0, 42.0... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Protein requirement; Ornamental fish; Carcass composition; Energy requirement; Growth. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000100009 |
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| Gonçalves,Liliane Maria Piano; Kiefer,Charles; Souza,Karina Márcia Ribeiro de; Marçal,Danilo Alves; Abreu,Rodrigo Caetano de; Santos Nieto,Viviane Maria Oliveira dos; Rodrigues,Gabriela Puhl; Alencar,Stephan Alexander da Silva. |
| ABSTRACT: The purpose of this study was to evaluate net energy and dietary ractopamine levels for barrows weighing 70 to 100kg. The 150 pigs investigated (initial weight 70.80±3.84kg) were distributed in a randomized block design with a 5×3 factorial arrangement, comprising five levels of net energy (2,300; 2,425; 2,550; 2,675; and 2,800Kcal kg-1 of diet) and three levels of ractopamine (5, 10, and 20ppm kg-1 of diet), with five replicates, and two animals per experimental unit. No interaction (P>0.05) was observed between net energy and ractopamine levels. Increasing the dietary net energy levels led to a linear reduction in feed intake, with a linear improvement in feed conversion. Net energy levels had no observable effect (P>0.05) on weight gain,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Energy requirement; Nutrition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701268 |
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| Nishida, T; Suzuki, T; Phaophaisal, I; Pholsen, P; Narmsilee, R; Indramanee, S; Oshio, S; 西田, 武弘. |
| At Khon Kaen in northeastern Thailand, energy metabolism in cattle was studied by a respiration trial system using a ventilated flow-through method with a face mask built with technical and financial support of Japan International Research Center for Agricultural Sciences (JIRCAS). Energy values of locally available feed resources have also been obtained from digestion and respiration trials. JIRCAS also had already completed a new ventilated head-hood apparatus for energy balance trials and started the data accumulation concerning the energy value of Pangola grass (Digitaria eriantha) with Brahman beef steers. As for the energy balance measurement technique, JIRCAS supports the establishment of feeding standard by measuring the energy requirement of... |
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Palavras-chave: Energy requirement; Energy value; Locally available feed resources. |
| Ano: 2008 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2670 |
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| Mendonça,Michele de Oliveira; Sakomura,Nilva Kazue; Santos,Fabiana Ramos dos; Freitas,Ednardo Rodrigues; Fernandes,João Batista Kochenborger; Barbosa,Nei André Arruda. |
| Foram conduzidos três ensaios para avaliar os níveis de energia metabolizável (EM) e a melhor relação energia:proteína (E:P) para aves de corte machos de crescimento lento criadas em semiconfinamento nas fases inicial (1 a 21), de crescimento (22 a 49) e de terminação (50 a 70 dias de idade). Em cada ensaio, 400 machos da linhagem ISA Label na fase de criação foram alojados em instalação experimental constituída de 20 piquetes com área coberta de 3,13 m²para alimentação e recolhimento das aves e uma área de pastejo de 72,87 m². O delineamento experimental foi o inteiramente casualizado com cinco tratamentos e quatro repetições de 20 aves. Os níveis de energia metabolizável fornecidos na ração na fase inicial variaram de 2.600 a 3.200 kcal/kg; na fase de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exigência de energia; Linhagem ISA Label; Relação energia:proteína; Energy requirement; Energy to protein ratio; ISA Label strain. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000800014 |
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| Noblet,Jean. |
| Feeds for pigs can be attributed different energy values according to, first, the step considered in energy utilization (DE: digestible energy, ME: metabolizable energy and NE: net energy) and, second, the method used for estimation at each step. Reference methods for evaluating DE content are based on in vivo digestibility measurements; indirect estimates of DE values are obtained from in vitro methods or prediction equations based on chemical characteristics. Methods have also been proposed for estimating urinary energy (and gas energy to a smaller extent) in order to calculate ME content from DE value. The NE values originate from energy balance studies (slaughter methods or, more commonly, indirect calorimetry measurements in respiration chambers) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy requirement; Energy value; Heat production; Net energy; Pig. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982007001000025 |
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