Short-term feeding behaviour has a similar structure in broilers, turkeys and ducks

Jennifer Ann Howie (1) , Bert J Tolkamp (1) , Tobias Bley (2) , Ilias Kyriazakis (3)

1 Disease Systems
2 Cherry Valley Foods
3 School of Agriculture, food and rural development

1. This study is the first to quantitatively compare the structure of feeding behaviour of broilers, ducks and turkeys as recorded by electronic feeders. It tests the hypothesis that this structure is so similar that the same models would be suitable to group the feeding behaviour of these species into meals. 2. Visits to electronic feeders were recorded from 3,470 broilers, 3,314 turkeys and 480 ducks. The frequency distributions of the length of short intervals to feeders varied between species as a result of differences in the number of visits within a feeding bout, the frequency of re-visits to the same feeder and probably in the likelihood of birds drinking within meals. 3. The lengths of longer day-time intervals between visits to feeders were all log-normally distributed. Disaggregation of these intervals by feeding strategy (i.e. meal frequency) showed that the probability of birds starting to feed increased with time since feeding last in all species, which is consistent with the satiety concept. 4. Two methods, one based on fitting a truncated log-normal, the other on observed changes in the probability of birds starting to feed with time since feeding last, gave very similar meal criteria estimates. These ranged from 1050 to 1200 sec in broilers, 1650 to 1725 sec in ducks and 1250 to 1320 sec in turkeys. 5. There were large between-species differences in the average number of daily meals, intake per meal, and feeding rate. Despite this variation, the overall structure of feeding behaviour of broilers, ducks and turkeys was so similar that the same models were suitable for application in all three species. This would allow for standardised analyses of feeding behaviour of different avian species kept in different husbandry systems.

Mots clés: Life Sciences

Jennifer Ann Howie, Bert J Tolkamp, Tobias Bley, Ilias Kyriazakis. Short-term feeding behaviour has a similar structure in broilers, turkeys and ducks. British Poultry Science, 2010, 51 (06), pp.714-724. ⟨10.1080/00071668.2010.528749⟩. ⟨hal-00652140⟩