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• W2092004232 abstract "Automated monitoring of the feeding patterns of growing-finishing pigs would allow detecting problems with individual pigs or groups of pigs and thus improving health, welfare and productivity of the farm. In this paper a High Frequency Radio Frequency Identification (HF RFID) system was validated for its suitability to register individual pigs' feeding patterns at a round trough in a group-housing context. High Frequency RFID antennas were installed above the troughs of a commercially available type of round feeder to identify feeding pigs fitted with one or two passive RFID tags on their ears. A multiplexer was used to connect multiple antennas to a single reader. During 11.5h, video observations of 20 focal pigs (equipped with two tags) at an age of 16weeks were performed to validate the system. A large variation in feeding patterns of the 20 focal pigs was found. Correlation between the number of registrations per pig and the feeding duration on video was low (R^2=0.53) mainly due to four pigs with specific feeding behaviour (with the four pigs excluded: R^2=0.88). The RFID registrations of the 20 focal pigs - with irregular time gaps between them - were compared with instantaneous video samples using several time window sizes around the video sample. The specificity for individual pigs with one or two tags was always above 85%, but sensitivity varied for individual pigs, tags and with different time windows used. A quantitative comparison between the use of one or two tags per pig was made based on a receiver operating characteristic (ROC) curve. For two tags per pig a sensitivity of 88.58% and a specificity of 98.34% can be reached with a time window size of 9s. For one tag per pig, sensitivity is only above 85% at a time window of size 31s. Of the total number of RFID registrations 77.11% occurred during feeding visits, and 92.23% occurred during or within 10s of feeding visits on video. This system showed good potential for measuring feeding patterns of growing-finishing pigs in commercial pig houses, for research purposes, or to detect potential problems with pigs by signalling changes in the registered feeding patterns." @default.
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• W2092004232 date "2014-03-01" @default.
• W2092004232 modified "2023-10-06" @default.
• W2092004232 title "Validation of a High Frequency Radio Frequency Identification (HF RFID) system for registering feeding patterns of growing-finishing pigs" @default.
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• W2092004232 doi "https://doi.org/10.1016/j.compag.2013.12.015" @default.
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