Bonnefous, Claire; Roth, Christoph; Amsler, Zivile and Maurer, Veronika (2025) What are the levers to improve the rearing of males from layer strains? In: Book of Abstracts of the 76th Annual Meeting of the European Federation of Animal Science, Innsbruck, Austria. 25-29 August 2025, EAAP, Rome, Italy, Annual meeting of the European Association for Animal Production, no. 39, p. 641.
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Document available online at: https://meetings.eaap.org/previous-annual-meetings/
Summary
Several countries have banned the culling of day‑old male chicks, leading to greater interest in fattening “brother roosters” or using dual‑purpose breeds, though data on their performance and welfare remain limited. In a study across Swiss farms, final live weight was mainly determined by genetics, and welfare was consistently high, influenced further by housing type and season. Feeding pullet feed from day one improved growth in brother roosters, and ongoing life‑cycle assessments aim to evaluate the overall sustainability of these emerging production systems.
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Paper |
| Keywords: | brother rooster, welfare, poultry, Abacus, FiBL50153 |
| Agrovoc keywords: | Language Value URI English poultry farming http://aims.fao.org/aos/agrovoc/c_6148 English animal welfare http://aims.fao.org/aos/agrovoc/c_443 English poultry rearing -> poultry farming http://aims.fao.org/aos/agrovoc/c_6148 |
| Subjects: | Animal husbandry > Health and welfare Animal husbandry > Production systems > Poultry |
| Research affiliation: | Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal > Animal breeding Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal > Animal welfare & housing > Animal welfare Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal > Poultry |
| ISBN: | 979-12-210-6769-9 |
| Related Links: | https://www.fibl.org/en/themes/projectdatabase/projectitem/project/2377 |
| Deposited By: | Ellenberger, Maura |
| ID Code: | 56958 |
| Deposited On: | 19 Mar 2026 08:23 |
| Last Modified: | 19 Mar 2026 08:23 |
| Document Language: | English |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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