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  1. AU="Larsen, Mona L.V."
  2. AU=Yang Ying
  3. AU="Dekić Rozman, Svjetlana"
  4. AU="Rowe, Ashlee H"
  5. AU="Perrevoort, A"
  6. AU="Bhardwaj, Shashank"
  7. AU=Li Bo
  8. AU=Ramani Rama
  9. AU="Várnai-Händel, Alinda"
  10. AU="Kucher, Michael"
  11. AU="Blucher, E."
  12. AU="Muffels, Ruud"
  13. AU="Roufos, I"
  14. AU="Ammad Ahmad Farooqi"
  15. AU="Zawadka-Kunikowska, Monika"
  16. AU="Young, A P"
  17. AU="Danielle M. Matriano"
  18. AU="Ancona, Jennifer"
  19. AU="Abdallah G. Kfoury"
  20. AU="Zaeske, C"
  21. AU="Hammerich, Kristoff"
  22. AU="Paul J. Burgess"
  23. AU="Valek, Lucie"
  24. AU="Mandal, Surajit"
  25. AU="Krumm, Laura"
  26. AU="Shimura, Hidetoshi"
  27. AU="Munguia-Lopez, Jose Gil"
  28. AU="Eysert, Fanny"
  29. AU="Qazi Arisa, Fakhar Ali"
  30. AU="Guan, Yunshan"
  31. AU="Ayachi, Jihene"
  32. AU="Boulvard Chollet, Xavier L E"
  33. AU="Kwon, Sohee"
  34. AU=Fra-Bido Sigrid
  35. AU="Delgado, Teresa Cardoso"
  36. AU="Judy Ly"
  37. AU="E Richtig"
  38. AU="Jones, D. C."
  39. AU="Revillet, Hélène" AU="Revillet, Hélène"
  40. AU="Lee, Ji Ye"
  41. AU="Yoshinaga, Kazuaki"
  42. AU="Moturi, Krishna"
  43. AU="Loizeau, J"
  44. AU="Gentry, Matthew S"
  45. AU="Drury, Lucy S"
  46. AU="Caraman, Irina"

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  1. Artikel ; Online: Automatic detection of locomotor play in young pigs: A proof of concept

    Larsen, Mona L.V. / Wang, Meiqing / Willems, Sam / Liu, Dong / Norton, Tomas

    IAgrE Biosystems Engineering. 2023 May, v. 229 p.154-166

    2023  

    Abstract: Play behaviour is considered an indicator of animal welfare in young pigs. However, as play behaviour events are short-lasting and occur sporadically, continuous monitoring is necessary. This study presents a first attempt at automatic detection of ... ...

    Abstract Play behaviour is considered an indicator of animal welfare in young pigs. However, as play behaviour events are short-lasting and occur sporadically, continuous monitoring is necessary. This study presents a first attempt at automatic detection of locomotor play behaviour in young pigs from video by classifying locomotor play from other solitary behaviours including standing, walking, and running. Two methods were developed, compared, and sequentially combined: (1) a less computational heavy method utilising the Gaussian Mixture Model for quantification of movement combined with the calculation of contour features and standard machine learning classifiers (FEATURES); (2) a computational heavy method utilising a deep learning classifier taking both spatial and temporal features into account (DEEP). The DEEP classifier outperformed the FEATURES classifier and obtained values of internal validation recall, precision, and specificity of 94%, 88% and 96%, respectively. When combining the two classification methods, almost similar performance was retained, whilst 44% of the other behaviours were correctly classified without the need for deep learning methods. The combination thereby decreased the computational power needed to run the algorithm. Thus, locomotor play can be automatically detected in young pigs and the combination of a less computational heavy method with a deep learning method can reduce the computational requirements for the classification and detection of complex behaviours. Future work should focus on the segmentation of single pigs during high-speed activity in order to enable the play detection algorithm to work in real-life settings.
    Schlagwörter algorithms ; animal welfare ; automatic detection ; models ; Technology ; Precision Livestock Farming ; Computer vision ; Gaussian Mixture Model ; Animal behaviour
    Sprache Englisch
    Erscheinungsverlauf 2023-05
    Umfang p. 154-166.
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel ; Online
    ZDB-ID 2075942-3
    ISSN 1537-5110
    ISSN 1537-5110
    DOI 10.1016/j.biosystemseng.2023.03.006
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  2. Artikel: Towards re-identification for long-term tracking of group housed pigs

    Wang, Meiqing / Larsen, Mona L.V. / Liu, Dong / Winters, Jeanet F.M. / Rault, Jean-Loup / Norton, Tomas

    IAgrE Biosystems engineering. 2022 Oct., v. 222

    2022  

    Abstract: Automatic monitoring tools can be useful for assessing the health and welfare status of animals. Specifically, a computer-vision-based tracking tool could be helpful to remotely and automatically monitoring the behaviour of individual animals. However, ... ...

    Abstract Automatic monitoring tools can be useful for assessing the health and welfare status of animals. Specifically, a computer-vision-based tracking tool could be helpful to remotely and automatically monitoring the behaviour of individual animals. However, animals housed in partly covered pens present a particular challenge for animal tracking due to the possibility for animals to disappear from and reappear in the field of view (FOV). The aim of this study was to develop a tracking method for weaner pigs housed in partly covered pens, with the particular aim to re-identify individuals when they reappear in the FOV. In this study a one-shot tracker in which the detection and re-identification (re-ID) branches were jointly trained was adopted for tracking pigs. Three associations based on re-ID features and intersection over union (IoU) were used for matching the correct ID, especially re-identifying individuals reappearing in the FOV. Two sets of short videos were selected to test the model, with a first set of two short videos (mean ± SD: 1m50s ± 20) and a second set of three short videos (mean ± SD: 10m08s ± 3m52s). The model reached the performance of 91.41% and 88.33% in MOTA and IDF1 on the first set of videos, and 81.17% in mean tracking percentage per individual on the second set. The test on one long video (from the same pen, length: 85 m) achieved a tracking percentage of 16.78% per individual. The suggested method improved automatic individual behaviour analysis in complex environments where animals can leave the FOV.
    Schlagwörter computer vision ; models ; weanlings
    Sprache Englisch
    Erscheinungsverlauf 2022-10
    Umfang p. 71-81.
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel
    ZDB-ID 2075942-3
    ISSN 1537-5110
    ISSN 1537-5110
    DOI 10.1016/j.biosystemseng.2022.07.017
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  3. Artikel ; Online: Play behaviour positively relates to weight gain, feeding behaviour and drinking behaviour in weaner pigs (Sus scrofa)

    Franchi, Guilherme A. / Larsen, Mona L.V. / Kristoffersen, Ida H. / Winters, Jeanet F.M. / Pedersen, Lene Juul / Jensen, Margit Bak

    Applied Animal Behaviour Science. 2023 Feb., v. 259 p.105836-

    2023  

    Abstract: Engagement in play behaviour has been associated with the presence of positive affective states and, thus, proposed to be an indicator of positive animal welfare. However, the interpretation of play in animals remains challenging due to the complexity of ...

    Abstract Engagement in play behaviour has been associated with the presence of positive affective states and, thus, proposed to be an indicator of positive animal welfare. However, the interpretation of play in animals remains challenging due to the complexity of motivating factors. Accordingly, we aimed to clarify whether Yorkshire × Landrace weaner pigs would engage more in play behaviour the more well-nourished they were by examining the effects of weight gain, feeding behaviour, and drinking behaviour on two types of play behaviour [locomotor-rotational play (LOC) and social play (SOC)]. In total, 24 litters [pigs/litter: (mean ± SD) 13 ± 2] raised under conventional husbandry conditions were included in this study. Each pig was manually weighed within 24 h of birth and on days − 7, 0, 1, 2 relative to the weaning day (day 0) at approximately 26 days of age. All behavioural measures were registered via video at individual level. Visits to feeder and drinker were registered from 07:00 h to 21:59 h on days − 1 and 1 using 2-min interval instantaneous sampling. The proportion of visits to each resource was calculated by dividing the number of scans visiting the resource by the total number of daily scans. The latencies to visit the feeder and drinker within the first 24 h post-weaning were continuously recorded. Both LOC and SOC were registered between 14:00 h and 22:00 h on days − 1, 1 and 2. Both before and after weaning, heavier pigs spent more time performing LOC. Before weaning, heavier pigs spent more time performing SOC. Proportion of visits to the feeder positively related to LOC after weaning. On the day before weaning, the proportion of visits to the drinker positively related to LOC. No clear relationships between the latency to feed and drink after weaning and play behaviour were found. Our study supports the hypothesis that motivation to play is higher when animals are in more stable conditions, e.g., well-nourished, and healthier than under suboptimal conditions. However, the fact that the nutritional measures did not similarly affect LOC and SOC suggests that these two types of play behaviour may be differently affected by the weaning context and questions whether they have the same underlying motivation. This study represents a step toward the validation of play as a positive animal welfare indicator.
    Schlagwörter Sus scrofa ; animal behavior ; animal welfare ; landraces ; motivation ; swine ; weanlings ; weight gain ; Positive animal welfare ; Locomotor-rotational play ; Social play ; Early weaning ; Growth ; Hunger
    Sprache Englisch
    Erscheinungsverlauf 2023-02
    Erscheinungsort Elsevier B.V.
    Dokumenttyp Artikel ; Online
    Anmerkung Use and reproduction
    ZDB-ID 591645-8
    ISSN 0168-1591
    ISSN 0168-1591
    DOI 10.1016/j.applanim.2023.105836
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  4. Artikel: Effects of feeding level, milking frequency, and single injection of cabergoline on feed intake, milk yield, milk leakage, and clinical udder characteristics during dry-off in dairy cows

    Larsen, Mogens / Franchi, Guilherme A. / Herskin, Mette S. / Foldager, Leslie / Larsen, Mona L.V. / Hernández-Castellano, Lorenzo E. / Sørensen, Martin T. / Jensen, Margit B.

    American Dairy Science Association Journal of dairy science. 2021 Oct., v. 104, no. 10

    2021  

    Abstract: Abrupt and gradual dry-off strategies by reducing feeding level (normal vs. reduced energy density), reducing milking frequency (twice vs. once daily), and administration of a dopamine agonist after last milking (i.m. saline vs. cabergoline injection) ... ...

    Abstract Abrupt and gradual dry-off strategies by reducing feeding level (normal vs. reduced energy density), reducing milking frequency (twice vs. once daily), and administration of a dopamine agonist after last milking (i.m. saline vs. cabergoline injection) were investigated (2 × 2 × 2 factorial arrangement) for their effects on feed intake, milk yield, energy balance, milk leakage, and clinical udder characteristics in 119 Holstein cows. In the last week before dry-off, cows were assigned to 1 of 4 combinations of feeding level and milking frequency. Within 3 h after last milking, cows were injected with either saline or a dopamine agonist (cabergoline; Velactis, Ceva Santé Animale; labeled for use only with abrupt dry-off, i.e., no preceding reduction in feeding level or milking frequency before last milking). After dry-off, all cows were fed the same diet for dry cows, and data collection continued for a week. Dry matter intake (DMI) was recorded in automated feed bins and milk yield in an automatic milking system where additional concentrate was fed. Clinical udder characteristics and milk leakage were scored 10 times during the week before and the week after dry-off. Before dry-off, total DMI decreased with reduced feeding level compared with normal feeding level, but did not differ between milking frequencies. The combined effect of reduced DMI and diet energy concentration resulted in a 47% lower net energy intake with reduced feeding level compared with normal feeding level during the week before dry-off. Milk yield was approximately 30% lower during the week before dry-off when either feeding level or milking frequency was reduced compared with no change in feeding level or milking frequency, whereas milk yield was 45% lower when both feeding level and milking frequency were reduced. The net energy balance during the week before dry-off was negative with reduced feeding level and more negative when combined with twice-daily milking. After dry-off, udder engorgement was reduced in the 3 gradual dry-off treatments compared with abrupt dry-off. Cabergoline injection after last milking resulted in least udder engorgement and signs of milk leakage for 48 h, but also resulted in abrupt reduction of DMI lasting approximately 24 h irrespective of treatment before dry-off. In conclusion, gradual cessation of lactation by reducing milking frequency to once daily without reducing the feeding level decreased milk yield before dry-off in high-yielding dairy cows and reduced udder engorgement after dry-off without inducing negative energy balance during the period of dry-off. In contrast, reduced feeding level induced negative energy balance, which may compromise welfare due to metabolic stress and hunger. No clear differences in risk of milk leakage after dry-off were observed between abrupt and gradual dry-off management strategies. Use of cabergoline led to fewer signs of milk leakage and reduced udder engorgement during the first days after dry-off, which may positively affect welfare at dry-off. However, the mechanism behind and the welfare consequences of the concomitant abrupt decrease in DMI lasting approximately 24 h needs further investigation to complete our understanding of dopamine agonist use for dry-off.
    Schlagwörter Holstein ; agonists ; automation ; data collection ; diet ; dopamine ; dry matter intake ; energy density ; energy intake ; engorgement ; hunger ; lactation ; milk ; milk yield ; risk ; udders
    Sprache Englisch
    Erscheinungsverlauf 2021-10
    Umfang p. 11108-11125.
    Erscheinungsort Elsevier Inc.
    Dokumenttyp Artikel
    ZDB-ID 242499-x
    ISSN 1525-3198 ; 0022-0302
    ISSN (online) 1525-3198
    ISSN 0022-0302
    DOI 10.3168/jds.2021-20289
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  5. Artikel ; Online: Effects of feeding level, milking frequency, and single injection of cabergoline on feed intake, milk yield, milk leakage, and clinical udder characteristics during dry-off in dairy cows.

    Larsen, Mogens / Franchi, Guilherme A / Herskin, Mette S / Foldager, Leslie / Larsen, Mona L V / Hernández-Castellano, Lorenzo E / Sørensen, Martin T / Jensen, Margit B

    Journal of dairy science

    2021  Band 104, Heft 10, Seite(n) 11108–11125

    Abstract: Abrupt and gradual dry-off strategies by reducing feeding level (normal vs. reduced energy density), reducing milking frequency (twice vs. once daily), and administration of a dopamine agonist after last milking (i.m. saline vs. cabergoline injection) ... ...

    Abstract Abrupt and gradual dry-off strategies by reducing feeding level (normal vs. reduced energy density), reducing milking frequency (twice vs. once daily), and administration of a dopamine agonist after last milking (i.m. saline vs. cabergoline injection) were investigated (2 × 2 × 2 factorial arrangement) for their effects on feed intake, milk yield, energy balance, milk leakage, and clinical udder characteristics in 119 Holstein cows. In the last week before dry-off, cows were assigned to 1 of 4 combinations of feeding level and milking frequency. Within 3 h after last milking, cows were injected with either saline or a dopamine agonist (cabergoline; Velactis, Ceva Santé Animale; labeled for use only with abrupt dry-off, i.e., no preceding reduction in feeding level or milking frequency before last milking). After dry-off, all cows were fed the same diet for dry cows, and data collection continued for a week. Dry matter intake (DMI) was recorded in automated feed bins and milk yield in an automatic milking system where additional concentrate was fed. Clinical udder characteristics and milk leakage were scored 10 times during the week before and the week after dry-off. Before dry-off, total DMI decreased with reduced feeding level compared with normal feeding level, but did not differ between milking frequencies. The combined effect of reduced DMI and diet energy concentration resulted in a 47% lower net energy intake with reduced feeding level compared with normal feeding level during the week before dry-off. Milk yield was approximately 30% lower during the week before dry-off when either feeding level or milking frequency was reduced compared with no change in feeding level or milking frequency, whereas milk yield was 45% lower when both feeding level and milking frequency were reduced. The net energy balance during the week before dry-off was negative with reduced feeding level and more negative when combined with twice-daily milking. After dry-off, udder engorgement was reduced in the 3 gradual dry-off treatments compared with abrupt dry-off. Cabergoline injection after last milking resulted in least udder engorgement and signs of milk leakage for 48 h, but also resulted in abrupt reduction of DMI lasting approximately 24 h irrespective of treatment before dry-off. In conclusion, gradual cessation of lactation by reducing milking frequency to once daily without reducing the feeding level decreased milk yield before dry-off in high-yielding dairy cows and reduced udder engorgement after dry-off without inducing negative energy balance during the period of dry-off. In contrast, reduced feeding level induced negative energy balance, which may compromise welfare due to metabolic stress and hunger. No clear differences in risk of milk leakage after dry-off were observed between abrupt and gradual dry-off management strategies. Use of cabergoline led to fewer signs of milk leakage and reduced udder engorgement during the first days after dry-off, which may positively affect welfare at dry-off. However, the mechanism behind and the welfare consequences of the concomitant abrupt decrease in DMI lasting approximately 24 h needs further investigation to complete our understanding of dopamine agonist use for dry-off.
    Mesh-Begriff(e) Animals ; Cabergoline ; Cattle ; Dairying ; Diet/veterinary ; Eating ; Female ; Lactation ; Mammary Glands, Animal ; Milk
    Chemische Substanzen Cabergoline (LL60K9J05T)
    Sprache Englisch
    Erscheinungsdatum 2021-07-16
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 242499-x
    ISSN 1525-3198 ; 0022-0302
    ISSN (online) 1525-3198
    ISSN 0022-0302
    DOI 10.3168/jds.2021-20289
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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