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Perinatal broiler physiology between hatching and chick collection in 2 hatching systems
L J F van de Ven1, A V van Wagenberg, E Decuypere
1Vencomatic BV, Eersel, the Netherlands. Lotte.vandeven@vencomatic.com
Poultry Science
|March 9, 2013
Summary
Early-hatching broiler chicks benefit from immediate feed and water access, improving their physiological development. Conversely, fasting chicks adapt metabolically to conserve nutrients, highlighting the impact of posthatch conditions on broiler physiology.
Area of Science:
- Avian Physiology
- Poultry Science
- Animal Husbandry
Background:
- Hatching time and posthatch conditions significantly impact broiler chick physiology.
- Conventional hatcheries often delay feed and water access, potentially disadvantaging early-hatched chicks.
- Alternative systems, like patio systems, offer immediate access to feed and water under different environmental conditions.
Purpose of the Study:
- To investigate the physiological responses of broiler chicks hatched at different times.
- To compare the effects of conventional hatcher versus patio systems on chick physiology.
- To determine how early posthatch feed and water access influences broiler development.
Main Methods:
- Fertile broiler eggs were incubated in either a conventional hatcher or a patio system.
- Chicks were sampled at three hatching times (early, midterm, late) for physiological analysis.
- Physiological parameters and organ weights were analyzed at hatch and at E21.5 (posthatch day 3).
Main Results:
- Later-hatching chicks exhibited greater maturity at hatch, indicated by increased organ weights and decreased residual yolk.
- Patio system chicks had higher organ weights compared to hatcher chicks.
- Early feed and water access in the patio system promoted physiological development and compensated for earlier hatching disadvantages.
Conclusions:
- Posthatch conditions, particularly feed and water availability, critically influence broiler chick physiology.
- Early-hatching chicks can overcome developmental disadvantages with immediate access to feed and water.
- Fasting induces metabolic adaptations in chicks, prioritizing nutrient preservation.
