Consulta: creatorFacets:"Mansano,Cleber Fernando Menegasso"
Registros recuperados: 5
Data/hora: 02/06/2024 02:12:31

Deposição de nutrientes na carcaça de girinos de rã-touro
Provedor de dados: 86
Autores: Mansano,Cleber Fernando Menegasso; De Stéfani,Marta Verardino; Pereira,Marcelo Maia; Macente,Beatrice Ingrid.
O objetivo deste trabalho foi determinar a deposição de nutrientes na carcaça de girinos de rã-touro (Lithobates catesbeianus) por meio de modelo não linear. Foram utilizados 2.700 girinos com peso médio inicial de 0,039 g. Ração comercial farelada com 55% de proteína bruta foi fornecida ad libitum. Os animais foram pesados e avaliados a cada dez dias para análise dos conteúdos de proteína bruta, extrato etéreo, água e sais minerais. Os parâmetros do modelo Gompertz foram estimados pelo método de Gauss-Newton modificado, e as taxas de deposição (g por dia) em função do tempo foram calculadas por meio da derivada da equação. Os valores encontrados para os parâmetros da equação de Gompertz, para descrever a deposição dos nutrientes na carcaça de girinos,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lithobates catesbeianus; Composição corporal; Modelo de Gompertz; Nutrição.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800014

Description of growth and body composition of freshwater angelfish (Pterophyllum scalare) by Gompertz model
Provedor de dados: 96
Autores: Espitia-Manrique,Carmen Helena; Fernandes,João Batista Kochenborger; Sakomura,Nilva Kazue; Arias-Vigoya,Ángel Andrés; Nascimento,Thiago Matias Torres do; Silva,Edney Pereira da; Mansano,Cleber Fernando Menegasso.
ABSTRACT The objective of this study was to describe the growth of freshwater angelfish (Pterophyllum scalare) using the Gompertz model, determining the relative growth and allometric coefficients of body components in relation to body weight and protein weight. Six hundred animals were grown until 233 days of age. Data on chemical composition (water, lipid, protein, and ash) and weight measurements were obtained each 30 days. The Gompertz growth equation was used to analyze chemical allometry and to estimate growth parameters. The relationship between chemical components and body protein was estimated. Protein and body weight increased proportionally, with ash being the earliest nutrient (209.2 days), while lipid deposition occurred later. Linear...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometry; Growth curve; Ornamental fish.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000800631

Fecal collection methods for the determination of protein digestibility in bullfrogs
Provedor de dados: 65
Autores: Stéfani,Marta Verardino De; Pereira,Marcelo Maia; Reche,Marcio Roberto; Mansano,Cleber Fernando Menegasso.
Adequate methods for the determination of protein digestibility in bullfrogs are important for the understanding of nutrient utilization. Therefore, this study evaluated two methods of feces collection: intestinal dissection and fecal decantation, using cylindric-conical tanks. Frogs were fed with a commercial diet (45% crude protein) which was ground and supplemented with 0.5% chromium oxide III. The frogs were fasted 48h before force-feeding (5% of the animal's live weight). For the decantation method, the animals were sacrificed 36 h after force-feeding and feces were collected directly from the large intestine. For the sedimentation method, feces were collected when they appeared in the tubes attached to the front end of the cylindric tanks. No...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Protein digestibility coefficient; Methodology; Nutrition; Frog farming.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000801492

Growth in weight and of some tissues in the bullfrog: fitting nonlinear models during the fattening phase
Provedor de dados: 64
Autores: Pereira,Marcelo Maia; Mansano,Cleber Fernando Menegasso; Silva,Edney Pereira da; Stéfani,Marta Verardino De.
Knowledge of the growth of animals is important so that zootechnical activity can be more accurate and sustainable. The objective of this study was to describe the live weight, development of liver tissue and fat body, leg growth, and cumulative food intake of bullfrogs during the fattening phase using nonlinear models. A total of 2,375 bullfrog froglets with an initial weight of 7.03 ± 0.16 g were housed in five fattening pens (12 m²). Ten samplings were performed at intervals of 14 days to obtain the variables studied. These data were used to estimate the parameters of Gompertz and logistic models as a function of time. The estimated values of weight (Wm) and food intake (FIm) at maturity and time when the growth rate is maximum (t*) were closer to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frog farming; Growth curves; Growth rate; Logistic model.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000600009

Non-linear growth models for bullfrog tadpoles
Provedor de dados: 64
Autores: Mansano,Cleber Fernando Menegasso; Stéfani,Marta Verardino De; Pereira,Marcelo Maia; Macente,Beatrice Ingrid.
Describing animal growth rate using non-linear models allows a detailed evaluation of growth behavior. Four non-linear models were used to fit weight gain and total length data of bullfrog (Lithobates catesbeianus) tadpoles, as follows: Gompertz, Y = A exp (-exp (-b (t-T))); Von Bertalanffy, Y = A (1 - K exp (-B t))³; Logistic, Y = A (1+ K exp (-B t))-1 and Brody, Y=A (1 - K exp (-B t)). We used 3,240 tadpoles, with average initial weight 0.044 g and average total length 12.79 mm, stage 25 Gosner. The measurements were conducted every ten days on 10% of the animals in every tank. The criteria used to select the model that best described the growth curve were: Residual Mean Square (RMS); determination coefficient (R²); residual graphical analysis; residual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Frog farm; Growth curve; Lithobates catesbeianus.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000400010