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- W4384162764 abstract "The use of artificial lighting for laying hens in poultry houses allows production optimization. However, the effect of recent lighting technologies needs to be investigated, as their use can affect the welfare of hens, causing biological rhythm, behavior, health, productive and reproductive performance and egg quality changes. Therefore, the objective of this study was to evaluate the physiological responses, productive performance and egg quality of hens under different light intensities. If a significant difference between treatments was found, statistical models and fuzzy inference systems (FISs) to predict such responses were developed and compared. Thus, 76 Hy-Line W-80 laying hens were housed in a controlled environment with temperature, relative humidity and air speed adjusted for bird comfort. The hens were exposed to illuminances of 5, 20, 50 and 100 lx for a period of 21 days. Among the evaluated response variables, only the mean feed intake (FI) and surface temperature (tsurf) of the hens had a significant interaction and interaction sliced by main factors (p < 0.05), allowing statistical model adjustment. For these two variables, FISs were also developed so that the illuminance and the time of exposure to illumination (tillu) were defined as input variables of the systems. As a result, the statistical models and FISs presented significant high-accuracy indexes when predicting the FI and the tsurf (except for R2 values related to the statistical models), yet with an advantage for the FISs models, in which greater generalization capabilities were obtained in the validation step. Therefore, the developed models can be used to support decisions related to the management of hens, supporting the smart production, with emphasis on FISs based on expert knowledge, since they can be used to obtain predicted responses in different scenarios in addition to those evaluated experimentally with high accuracy." @default.
- W4384162764 created "2023-07-14" @default.
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- W4384162764 date "2023-08-01" @default.
- W4384162764 modified "2023-09-25" @default.
- W4384162764 title "Statistical and fuzzy modeling for accurate prediction of feed intake and surface temperature of laying hens subjected to light challenges" @default.
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