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| Cunha,Daniel de Noronha Figueiredo Vieira da; Pereira,José Carlos; Silva,Fabyano Fonseca e; Campos,Oriel Fajardo de; Braga,José Luis; Martuscello,Janaina Azevedo. |
| The objective of this study was to select models of lactation curves with a better adjustment to the observed data in models of milk production simulation systems. A data base on 6,459 recordings of daily milk production was used. These data were obtained from monthly and fortnightly controls of milk between 2004 and 2007, from 472 lactations of animals from ten different milking cow herd farms. Based on rolling averages of milk production (MP-L/day) per cow, the ten herd farms were divided into low (L < 15), medium (15 <M < 20) and high (H > 20). Data were also divided according to the lactation numbers in first, second, third or greater. Eight lactation curve models commonly used in literature were compared. The models were individually... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cattle; Modeling; Non-linear model. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000400026 |
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| Diel,Maria Inês; Lúcio,Alessandro Dal’Col; Valera,Oscar Valeriano Sanchéz; Sari,Bruno Giacomini; Olivoto,Tiago; Pinheiro,Marcos Vinícius Marques; Melo,Patrícia Jesus de; Tartaglia,Francieli de Lima; Schmidt,Denise. |
| ABSTRACT: The objective of this study was to characterize the production of biquinho pepper through the interpretation of parameter estimates from the logistic model and its critical points obtained by the partial derivatives of the function, and to indicate the best cultivar and growing season for subtropical climate sites. For this, a 2x3 factorial experiment was conducted with two cultivars of biquinho pepper (BRS Moema and Airetama biquinho) in three growing seasons (E1: October 2015, E2: November 2015, E3: January 2016). The logistic non-linear model for fruit mass was specified as a function of the accumulated thermal sum, and the critical points were calculated through the partial derivatives of the model, in order to characterize the productive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum chinense; Temperature; Fruit mass; Non-linear model. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000400202 |
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