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Frank Tuyttens
Ghent University
219Publications
26H-index
2,507Citations
Publications 222
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Abstract Claw lesions have a multifactorial origin and may affect sow welfare and farm profitability. However, estimating the precise impact is hampered by several factors that interfere with the accuracy of claw lesion assessment. The objective of this study was to determine the impact of observer, scoring condition and claw cleanliness on claw lesion scoring in sows. The first experiment evaluated the impact of observer by calculating the inter- and intra-observer reliability during three test...
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Abstract Accelerometers (neck- and leg-mounted) and ultra-wide band (UWB) indoor localization sensors were combined for the detection of calving and estrus in dairy cattle. In total, 13 pregnant cows and 12 cows with successful insemination were used in this study. Data were collected two weeks before and two weeks after delivery for calving. Similarly, data were collected two weeks before and two weeks after artificial insemination (AI) for estrus. Different cow variables were extracted from th...
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#1Lisanne Stadig (UGent: Ghent University)H-Index: 7
#2Frank Tuyttens (UGent: Ghent University)H-Index: 26
Last.Bert ReubensH-Index: 8
view all 6 authors...
ABSTRACTPlanting short rotation coppice willows (SRCW) in chickens’ free-range areas could have several advantages for the chickens, environment and farmer. Our aim was to test the effects of combi...
1 CitationsSource
#1E. Heyrman (Katholieke Universiteit Leuven)H-Index: 2
#2Eline Kowalski (UGent: Ghent University)H-Index: 1
Last.Marijke AluwéH-Index: 13
view all 10 authors...
Abstract Immunocastration (vaccination against boar taint) is an alternative method to prevent boar taint without the need for surgical castration. This study investigates the evolution of boar taint compounds in serum and fat, serum steroid compounds as well as behavior in immunocastrated pigs from 3 sire lines: 15 stress positive Belgian Pietrain (BP), 20 stress negative French Pietrain (FP), and 20 stress negative Canadian Duroc (CD). Hormone and boar taint compounds in serum were determined ...
1 CitationsSource
#1Said Benaissa (UGent: Ghent University)H-Index: 4
#2David Plets (UGent: Ghent University)H-Index: 14
Last.Wout Joseph (UGent: Ghent University)H-Index: 36
view all 11 authors...
In this Letter, for the first time, the in-to-out-body path loss between an antenna placed inside the cows' rumen and a distant gateway was characterised at 433 MHz. Measurements were conducted on seven different fistulated cows using a signal generator and a spectrum analyser. Subsequent measurement of the antenna in free space was used to quantify the path loss increase due to the cow body. Results have shown an increase of the path loss by 45.5 dB on average (all cows), with a variation betwe...
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#2Jürgen VangeyteH-Index: 10
Last.Sam MilletH-Index: 19
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Claw lesions and lameness in sows are important problems in the industry as they impair sow welfare and result in economic losses. Available scoring techniques to detect claw lesions are all limited in terms of collecting data during all reproductive phases and recording all claws. The Mobile Claw Scoring Device (MCSD) was designed to address these limitations. After considering different practical situations and a design phase, two prototypes were constructed and tested. Improvements were incor...
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#1Stephanie A F Buijs (UoB: University of Bristol)H-Index: 2
#2J.L.T. HeerkensH-Index: 11
Last.Frank TuyttensH-Index: 26
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Accurate assessment is essential when evaluating keel bone damage. Palpation is commonly used to assess keel bone damage in living hens. However, there is little information on the accuracy of assessment of deviations and fractures on different parts of the keel, and on the consistency within, and agreement between, assessors. Crucially, although the importance of experience is commonly emphasized, knowledge on its effect is scarce. Ten assessors with or without prior experience palpated the sam...
2 CitationsSource
#1Said Benaissa (UGent: Ghent University)H-Index: 4
#2Frank TuyttensH-Index: 26
Last.Bart Sonck (UGent: Ghent University)H-Index: 15
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Abstract A new simple decision-tree (DT) algorithm was developed using the data from a neck-mounted accelerometer for real-time classification of feeding and ruminating behaviours of dairy cows. The performance of the DT was compared to that of a support vector machine (SVM) algorithm and a RumiWatch noseband sensor and the effect of decreasing the sampling rate of the accelerometer on the classification accuracy of the developed algorithms was investigated. Ten multiparous dairy cows were used ...
2 CitationsSource
This paper focuses on systems producing short rotation coppice willows (SRCW) in chickens' free-range areas. We aim to map chicken farmers' motivation to implement SRCW, and to assess the economic viability of these systems. Semi-structured interviews were conducted with 18 free-range chicken farmers. Farmers agreed that chickens would prefer SRCW over grassland, which could benefit chicken welfare. They expected establishing an SRCW system would be labor intensive, and doubted if it would be a ...
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#1Said Benaissa (UGent: Ghent University)H-Index: 4
#2Amine M. Samoudi (UGent: Ghent University)H-Index: 4
Last.Wout Joseph (UGent: Ghent University)H-Index: 36
view all 11 authors...
Abstract In this paper, we assessed the exposure of a cow to the electromagnetic fields (EMFs) induced by a wireless power transfer (WPT) system working at 92 kHz in a dairy barn. Cow exposure to the radiated EMFs was evaluated and compared to safety guidelines. We modeled a realistic WPT system for dairy cows in Sim4Life, a 3D electromagnetic simulation tool. We validated the model with electric field measurements; simulated fields deviated on average 6% from measured fields. We used the propos...
1 CitationsSource
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