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| Finco,Eline Maria; Marcato,Simara Márcia; Furlan,Antonio Claudio; Rossi,Robson Marcelo; Grieser,Daiane de Oliveira; Zancanela,Vittor; Oliveira,Taciana Maria Moraes de; Stanquevis,Caroline Espejo. |
| ABSTRACT An experiment was conducted to estimate the parameters of the Gompertz, Brody, Logistic, and Von Bertalanffy equations through Bayesian inference and evaluate the potential for growth in terms of weight and body composition of laying female quail (Coturnix coturnix japonica). The weights and body compositions of the birds were obtained weekly (1-119 days), allowing the adjustment of the four equations by Bayesian inference. The parameters mature weight (β1), integration constant (β2), maturity rate (β3), and their credibility intervals in four models on body weight and body components were properly estimated by Bayesian inference to describe the body growth in laying quail. The inflection point was determined by the 1st and 2nd derivatives of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adjust quality; Development; Maturity rate; Nonlinear models; Weight at maturity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001200737 |
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| Grieser,Daiane de Oliveira; Marcato,Simara Márcia; Furlan,Antonio Claudio; Zancanela,Vittor; Vesco,Ana Paula Del; Batista,Eliany; Ton,Ana Paula Silva; Perine,Taynara Prestes. |
| ABSTRACT The objective of this study was to estimate the growth parameters of body weight and body nutrient deposition in males and females of one meat- (Coturnix coturnix coturnix) and two laying-type quail strains (Coturnix coturnix japonica), designated either yellow or red, using the Gompertz model. A total of 1350 quail from 1 to 42 days of age were used and they were distributed in a completely randomized design, with five replications for each strain. The parameters of body weight and body composition of the quail were analyzed weekly and evaluated using the Gompertz equation; growth rates and body nutrient deposition were evaluated through derivative equations. The three strains evaluated showed differences in their potential, growth rates, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body protein; Development of birds; Maturity rate; Nonlinear model; Weight at maturity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100504 |
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| Marinho,Kedma Nayra da Silva; Freitas,Alfredo Ribeiro de; Falcão,Alencariano José da Silva; Dias,Francisca Elda Ferreira. |
| Growth curves of Nellore cows were estimated by comparing six nonlinear models: Brody, Logistic, two alternatives by Gompertz, Richards and Von Bertalanffy. The models were fitted to weight-age data, from birth to 750 days of age of 29,221 cows, born between 1976 and 2006 in the Brazilian states of Acre, Amapá, Amazonas, Pará, Rondônia, Roraima and Tocantins. The models were fitted by the Gauss-Newton method. The goodness of fit of the models was evaluated by using mean square error, adjusted coefficient of determination, prediction error and mean absolute error. Biological interpretation of parameters was accomplished by plotting estimated weights versus the observed weight means, instantaneous growth rate, absolute maturity rate, relative instantaneous... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beef cattle; Maturity rate; Modeling. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900006 |
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| Arruda,Rosana Moreira da Silva de; Souza,Júlio César de; Jardim,Rodrigo José Delgado; Ferraz Filho,Paulo Bahiense; Silva,Luiz Otávio Campos. |
| ABSTRACT The objective of this study was to evaluate the growth curve of Nellore cattle raised in the Pantanal, Mato Grosso do Sul, in different groups of size (weight), sex, and birth season, as well as to estimate the nutritional requirements for maintenance of the asymptotic weigh. The nonlinear models were adjusted using the Gauss-Newton method, with information on weight and age of animals within each (total, upper, and middle) group. The asymptotic weight was influenced by sex (P<0.05) in all groups. Regarding maturity rates, females in the total herd and upper group were more precocious than males, whereas males and females in the middle group were similar. Animals born in the dry season of the year showed a greater asymptotic weight in the total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birth station; Total digestible nutrients; Maturity rate. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902018000400692 |
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