| Autor: |
Veissier, I, Mialon, M. M., Lardy, R., Meunier, B., Bouchon, M., Munksgaard, Lene, Terre, M., Valldecabres, A., Van Reenen, K, van Dixhoorn, I, De Mol, R. |
| Přispěvatelé: |
Strandberg, E., Pinotti, L., Messori, S., Kenny, D., Lee, M., Hocquette, J.F., Cadavez, V.A.P., Millet, S., Evans, R., Veldkamp, T., Pastell, M., Pollott, G. |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Zdroj: |
Veissier, I, Mialon, M M, Lardy, R, Meunier, B, Bouchon, M, Munksgaard, L, Terre, M, Valldecabres, A, Van Reenen, K, van Dixhoorn, I & De Mol, R 2021, Detection of complex animal traits from data provided by activity sensors . in E Strandberg, L Pinotti, S Messori, D Kenny, M Lee, J F Hocquette, V A P Cadavez, S Millet, R Evans, T Veldkamp, M Pastell & G Pollott (eds), Book of Abstracts of the 72nd Annual Meeting of the European Federation of Animal Science . Wageningen Academic Publishers, EAAP Book of Abstracts, vol. 27, pp. 605-605, 72nd Annual Meeting of the European Federation of Animal Science, Davos, Switzerland, 29/08/2021 . https://doi.org/10.3920/978-90-8686-918-3 |
| DOI: |
10.3920/978-90-8686-918-3 |
| Popis: |
Behaviour impacts on an animal’s functioning (e.g. eating determines nutrition). In turn the internal state of an animal impacts on its behaviour (e.g. over stress reactions). We thus assume that behaviour is related to complex traits suchas production, efficiency, health, welfare. We carried out several studies to investigate such links. First, we analysed the impact of animal behaviour on its functioning. Feed intake for cows fed indoor depends on the time spent eatingand the rate of eating (DMI/min). Production (e.g. milk yield) depends on feeding behaviour and other activities. Indeed, more active cows (characterised by high number of steps per day) yield less milk (r=-0.37), presumably because walking increases energy expenditure. Also higher feeding rates seem detrimental to milk yield (r=-0.36). We are investigating ways to characterise precisely the feeding behaviour of cows (number and size of meals, ratio of eating/chewing per meal, etc.) and its links with feed efficiency. Second, we analysed the impacts of internal states on behaviour. Infectious diseases and stress alter the activity. This was observed through drinking behaviour (increased in case of fever) or alteration of the daily rhythm of activity (less marked in more than 90% health disorders). Such alterations can be detected before appearance of clinical signs of a disease. Finally, the behavioural phenotype of an animal during dry period (level of activity, regularity and periodicity of activity measured) seems to determine its robustness after calving, especially in relation to health disorders. Characterising the behaviour of animals can now be done on farms on a routine basis thanks to sensors automatically recording activities. This opens opportunities to better predict or monitor animal health, welfare and production, which in turn can help farm management at strategic (e.g. use of behavioural criteria for selection) and operational (refinement of the daily interventions) levels. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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