# Effects of cold embryo acclimation for improving adaptive capacities in meat-type chicken

Dzidzo Nyuiadzi, Bertrand Méda, Léonie Dusart, Cécile Berri, Angélique Travel, Laurence A. Guilloteau, Vincent Coustham, Yufeng Wang, Isabelle Bouvarel, Jacob Kokou Tona, et al.

► To cite this version:

Dzidzo Nyuiadzi, Bertrand Méda, Léonie Dusart, Cécile Berri, Angélique Travel, et al. Effects of cold embryo acclimation for improving adaptive capacities in meat-type chicken. Symposium CERSA Poultry Production under ho and humid climate conditions, Jun 2017, Lome, Togo. hal-01604503

HAL Id: hal-01604503

https://hal.science/hal-01604503v1

Submitted on 2 Jun 2020

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<figure><img src="image_1.png" /></figure>
UNIVERSITE DE LOME

CENTRE D'EXCELLENCE REGIONAL
SUR LES SCIENCES AVIAIRES

SYMPOSIUM

<figure><img src="image_2.png" /></figure>

POULTRY PRODUCTION UNDER HOT
AND HUMID CLIMATE CONDITIONS

LOME FROM 12TH TO 16TH JUNE 2017

PROGRAM
AND
SUMMARIES OF THE
COMMUNICATIONS
before laying started. The trials will continue to know the adaptability of these strains
in real environment with breeders.

**Key Words:** Growth / reproduction, ISA-Brown, Sasso, family poultry.

R2- EFFECTS OF COLD EMBRYO ACCLIMATION FOR IMPROVING ADAPTIVE CAPACITIES IN MEAT-TYPE CHICKEN

Nyuiadzi Dzidzo<fnref n="1" />,<fnref n="2" />, Méda Bertrand<fnref n="1" />, Dusart Léonie<fnref n="3" />, Berri Cécile<fnref n="1" />, Travel Angélique<fnref n="3" />, Guilloteau Laurence A.<fnref n="1" />, Coustham Vincent<fnref n="1" />, Wang Yufeng<fnref n="4" />,<fnref n="5" />, Bouvarel Isabelle<fnref n="3" />, **Tona Jacob K.**<fnref n="2" />, **Collin Anne**<fnref n="1" />

It is possible to improve poultry adaptability to variations in ambient temperature by changing egg incubation conditions. Our goal is to improve broiler adaptation to cold environment and achieve a multi-level evaluation of the cold incubation technique in different subsequent starting conditions.

In a first 21-day study in cages, we identified the experimental conditions favouring robustness and hatchability without reducing performance. The incubation conditions tested were a **Control Incubation** (CI at constant temperature), incubation with two brief exposures to 15°C at the end of incubation (**Cold Incubation1**, CI1) or incubation with cyclic declines by 1°C from day 10 to 18 of incubation (**Cold Incubation2**, CI2). Chickens were then exposed to standard rearing conditions (**Control Rearing**, CR) or to day/night variations in room temperature (**Cold Rearing1**, CR1), or to continuously cooler ambient temperatures requiring adaptation (**Cold Rearing2**, CR2).

A second experiment crossing incubations CI and CI1 and rearing conditions CR and CR2 was then conducted in floor pens until 40 days of age. In our conditions, the "cold" incubation techniques did not penalize hatchability of eggs. In cages, in females only, the CI2 incubation treatment degraded feed efficiency while CI1 did not alter growth. Our experiments suggest positive effects of cold incubation and cold rearing on performance in males but show negative interactions between both thermal treatments on a parameter of animal welfare and on a meat quality defect. Postnatal cooler rearing could be interesting to limit environmental impact if litter moisture is well controlled through ventilation.

This multicriterion analysis will be be completed to evaluate these perinatal
techniques according to the three pillars of sustainability, including economic, social
and environmental impacts.

<footnote n="1">¹URA, INRA, F-37380, Nouzilly, France</footnote>

<footnote n="2">²CERSA, Université de Lomé, B.P. 1515, Lome, Togo</footnote>

<footnote n="3">³Institut Technique de l'Aviculture, F-37380, Nouzilly, France</footnote>

<footnote n="4">⁴KU Leuven, Laboratory of Livestock Physiology, Department of Biosystems, Kasteelpark Arenberg 30, 3001 Leuven, Belgique</footnote>

<footnote n="5">⁵NUTREX NV., Achterstenhoek 5, 2275 Lille, Belgique</footnote>