Results 11 to 20 of about 2,759 (167)
On the exponent in the Von Bertalanffy growth model [PDF]
PeerJ, 2018 Von Bertalanffy proposed the differential equation m′(t) = p × m(t)a − q × m(t) for the description of the mass growth of animals as a function m(t) of time t.
Katharina Renner-Martin +4 more
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Best-fitting growth curves of the von Bertalanffy-Pütter type. [PDF]
Poult Sci, 2019 A large body of literature aims at identifying growth models that fit best to given mass-at-age data. The von Bertalanffy-Pütter differential equation is a unifying framework for the study of growth models.The most common growth models used in poultry science literature fit into this framework, as these models correspond to different exponent-pairs (e ...
Kühleitner M +4 more
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Best fitting tumor growth models of the von Bertalanffy-PütterType. [PDF]
BMC Cancer, 2019 Longitudinal studies of tumor volume have used certain named mathematical growth models. The Bertalanffy-Pütter differential equation unifies them: It uses five parameters, amongst them two exponents related to tumor metabolism and morphology. Each exponent-pair defines a unique three-parameter model of the Bertalanffy-Pütter type, and the above ...
Kühleitner M +4 more
europepmc +5 more sources
A general Richards family growth curve fit in European livestock for use in physiologically-based toxicokinetic modelling [PDF]
BMC Veterinary ResearchBackground Physiologically-based toxicokinetic models in livestock need to account for growth during long-term exposure studies due to increase in tissue volume and subsequent dilution of concentration.
David Inauen +3 more
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Modeling growth performance of heterogeneous rabbits in a pastured system using nonlinear, spline and random regression models [PDF]
Veterinary and Animal ScienceAccurate modeling of growth trajectories is critical for decision-making in rabbit production, particularly under low-input systems. However, limited studies have evaluated the comparative performance of growth models for rabbits reared in such systems ...
Hameed Akande Bashiru +1 more
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Extended von Bertalanffy Equation in Solow Growth Modelling
AlgorithmsThe aim of this work is to model the growth of an economic system and, in particular, the evolution of capital accumulation over time, analysing the feasibility of a closed-form solution to the initial value problem that governs the capital-per-capita ...
Antonio E. Bargellini +2 more
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Nonlinear mixed models for characterization of growth trajectory of New Zealand rabbits raised in tropical climate [PDF]
Animal Bioscience, 2022 Objective The identification of nonlinear mixed models that describe the growth trajectory of New Zealand rabbits was performed based on weight records and carcass measures obtained using ultrasonography.
Vanusa Castro de Sousa +7 more
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SOME NEW RESULTS OF A FRACTIONAL VON BERTALANFFY MODEL
E-Jurnal Matematika, 2023 In this article, we review the deterministic and perturbed Von Bertalanffy model that has been developing to discuss the existence and uniqueness results of the model.
AVAN AL-SAFFAR
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Nonlinear equations to determine the growth curve of immunocastrated pigs [PDF]
Pesquisa Agropecuária Brasileira, 2020 : The objective of this work was to compare the performance of the nonlinear Gompertz, logistic, and von Bertalanffy equations, to describe the growth curve of immunocastrated male pigs from birth until reaching 140 kg body weight. Standard error, number
Marcos Speroni Ceron +7 more
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Biotecnología en el Sector Agropecuario y Agroindustrial, 2022 Tradicionalmente se ha utilizado el modelo de von Bertalanffy como patrón único en el estudio del crecimiento de los peces, considerándolo a priori como el único modelo que se ajusta a los datos de longitu-edad de las especies; una consideración que ...
Angel Rafael González
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