Proposta de análise genética de curvas de crescimento de bovinos por meio do algoritmo SAEM

Silva, Ñatascha Almeida Marques da; Lana, Ângela Maria Quintão; Silva, F. Fonseca e; Lima, Renato Ribeiro de; Silva, M.A.; Bergmann, J.R.

doi:10.1590/s0102-09352012000500025

Cited by 1 publication

(2 citation statements)

References 10 publications

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“…The study of growth curves and their models is a widespread approach to analyze the productive efficiency of crop biomass (Silva, 2010) from a biological perspective. These models should have parameters whose biological interpretation help understanding the phenomena that occur during growth (Cao et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Growth curve establishment of Cratylia argentea for harvest timing

Climaco,

Teixeira,

Abreu

et al. 2023

Preprint

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The objectives of this study were to evaluate the growth curve and chemical composition of Cratylia (Cratylia argentea). The experiment was conducted with Cratylia planted in two-line spacings of 2 or 3 meters between rows and 0,5 m between plants. Cratylia plants were evaluated in a cycle of 126 days, with pruning events every 21 days, and a total of 6 assessments for each treatment. Parameters of bromatological composition (DM, CP, NDF, ADF) of plant edible fraction (EF) and productivity (total productivity and productivity of the EF in DM) were evaluated. The study was performed in a completely randomized design with 2 treatments (spacing) and 6 replications. The variations over days were evaluated using regression analysis, and the results were compared by Fisher test (p<0,05). The models that had the best fit for productivity was exponential and logistic, whereas, for the bromatological composition it was Gompertz and polynomial. The 3 m spacing had lower productivity and CP content. The Cratylia growth rate reduced with increased plant maturity, which suggested its prune at 86 days for the 2 m spacing and 91 days for 3 m spacing. Based on the results found in this research, the 2 m showed greater yield and CP content. Both spacings presented values of CP, NDF, and ADF of 20.26, 60.29 and 40.63% for 2 m spacing and 18.97, 60.61 and 42.11% for 3 m spacing, respectively for 105 days of pruning, which was less productive for both spacings.

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Section: Introductionmentioning

confidence: 99%

“…These models should have parameters whose biological interpretation help understanding the phenomena that occur during growth (Cao et al, 2019). In addition, regression models for the growth curve allow the estimation of accumulated biomass value for different plant ages within the evaluation interval (Cao et al, 2019;Silva, 2010).…”

Section: Introductionmentioning

confidence: 99%