Feed And Grow Fish Modl
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The model was implemented on a dataset of commercial Atlantic salmon (Salmo salar) families produced by two different salmon family companies (Kolven-Sisu Oy, Estonia and Rusi Oy, Finland) operating under a quota on growth rate between 1993 and 2010. The fish model was implemented using a commercial modelling software from North Marine Technology (NMT) (https://www.nmt.fi/en/pages/context.jsp), and ran under a commercial programming language R. Each salmon family was modelled separately at time points of teledata (1993–2010). The TGC was normally distributed with a mean of approximately 0.86 and a standard deviation of 0.11. The empirical distribution of the offspring errors (FCR) was fitted to a bivariate normal distribution, with a correlation between the FCR of maternal and offspring at 39 months old of −0.01 which is consistent with values reported previously for Atlantic salmon [23–25], and the mean of the bivariate normal distribution was set to equal the square root of the product of the variances of FCR of FCR of maternal and offspring at 39 months old. The other key model parameters were those of the explanatory variables described below.
Emissions of nutrient-based pollutants and feed consumption were calculated at the kg of fish mass and kilogram of fish production (kg of fish mass) level, respectively, reducing extreme values in the lower tail. The percentages represented in the graphs come from the simulations of the model using the environmental values. The results of the model ran with fish economic values are provided in the methods section below.
A statistical model was fitted to the data to determine the individual FCR (FCR) and growth rate (TGC) values of the offspring of each salmon family. The model was also used to calculate the environmental values and GWP emissions and their gradation with increasing TGC and FCR. d2c66b5586