On-farm hatching and contact with adult hen posthatch induce sex-dependent effects on performance and health in broiler chickens - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

On-farm hatching and contact with adult hen posthatch induce sex-dependent effects on performance and health in broiler chickens

Résumé

To improve the early perinatal conditions of chicks, alternative hatching systems have been developed. Onfarm hatching (OFH) with an enriched microbial and stimulating environment by the presence of an adult hen is a promising solution. Effects of OFH, conventional hatcher (CH), treated or not with antibiotics (CH + AB), with an adult hen (OFH + H, CH + H) or not were analyzed on hatchability, chick quality, performance, health and robustness. The OFH chick BW was significantly greater than that of CH chicks at hatching. Whereas there was no effect of hatching conditions, the presence of hens decreased the hatchability rate, the quality score of OFH chicks and increased mortality at hatching. Treatment of CH chicks with antibiotics temporarily decreased chicken BW at D19 but the feed conversion ratio (FCR) was not modified. At D19, OFH chicks had the best BW compared to the other groups and the presence of hens had negative impacts on both chicken BW and FCR regardless of the hatching condition. An interaction between the effect of hatching condition and chicken sex was observed later. In males, the OFH chicken were the heaviest compared to the other groups at D34 but not anymore at D56, the presence of hens had eventually a negative impact on chicken BW at D56. In females, there was no effect of hatching condition on the BW at D34 and D56 and the presence of hens had eventually a positive impact on OFH chicken BW. In conclusion, the OFH system is beneficial for the performance of the chicks throughout the rearing period compared to the CH system. The effects of the presence of hens at hatching and during the chick start-up phase is dependent on hen behaviour, which interacts with the hatching condition and the sex of the chickens.
Fichier non déposé

Dates et versions

hal-04442485 , version 1 (06-02-2024)

Identifiants

  • HAL Id : hal-04442485 , version 1

Citer

Laurence L.A. Guilloteau, Aline Bertin, Sabine Crochet, Charlotte Bagnard, Alice Hondelatte, et al.. On-farm hatching and contact with adult hen posthatch induce sex-dependent effects on performance and health in broiler chickens. XI European Symposium on Poultry Welfare, Jun 2023, Prague, Czech Republic. pp.69-69. ⟨hal-04442485⟩
12 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More