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Communication Dans Un Congrès Année : 2011

Impact of the ingestion of soil and of herbage on energy retention in broilers

Impact de l'ingestion de sol et de vegetaux par le poulet de chair sur la valorisation energetique de la ration

Résumé

In alternative rearing systems, the runs made available to animals allow them to ingest soil and herbage. The current study aimed at assessing the impact of the ingestion of soil and of herbage on growth performance and energy retention in broilers. Ninety slow growing broilers aged 38 days were placed in individual cages. They received ad libitum one of the nine pelleted experimental diets for an 8-day period. Experimental diets were based on the addition of 0, 10, 20 or 30% of dry soil, or 5, 10 or 15% of dry herbage or a mixture of both (10/10 or 20/5) in a growing broiler diet. An individual energy balance was performed during the three last days of experiment. Animals given the diets with 30% of soil displayed a final body weight by 9% lower than the other diets (P<0.05). Feed consumption was the lowest in diets without soil, while the highest was recorded in diets containing 20% soil (+21%, P<0.05), irrespective of herbage incorporation. Energy retention ranged between 0.712 and 0.627 (P<0.05) in the broiler diet and the diet with 15% herbage, respectively. Soil reduced dietary energy concentration by dilution. Moreover, it had a slight linear deleterious effect on energy retention provided by the broiler diet, reaching 0.019 for 30% soil in the diet. This decrease in energy concentration was partly compensated by enhanced ingestion up to 20% of soil in the diet. In contrast, broilers given diets with herbage did not compensate the low energy retention coefficient of herbage (0.144) by increased intake.
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Dates et versions

hal-02746114 , version 1 (03-06-2020)

Identifiants

  • HAL Id : hal-02746114 , version 1
  • PRODINRA : 267784

Citer

Karine K. Germain, Bayé Madiop Niang, Herve H. Juin, Catherine Jondreville, Stefan Jurjanz. Impact de l'ingestion de sol et de vegetaux par le poulet de chair sur la valorisation energetique de la ration. 9. Journées de la Recherche Avicole, Mar 2011, Tours, France. ⟨hal-02746114⟩
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