Effects of increased diet density through increased dietary fat level on energy balance characteristics of broilers during the first week of life

D.M. Lamot, D. Sapkota, P.J.A. Wijtten, I. van den Anker-Hensen, M.J.W. Heetkamp, B. Kemp, H. van den Brand

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

The current study aimed to determine the effect of increased diet density through increasing dietary fat level on growth performance and energy balance characteristics of broiler chickens during the first week of life. The effects of diet density on energy and nitrogen metabolism were studied using a dose response design that comprised 5 dietary fat inclusion levels (3.5, 7.0, 10.5, 14.0, and 17.0%) while maintaining a constant digestible amino acid to energy ratio. Chickens were housed in open circuit climate respiration chambers. Preplanned contrasts were used to determine significant linear and quadratic relationships with diet density. Feed intake and BW gain linearly decreased and gain to feed ratio increased (P<0.001) with increasing dietary density. Nutrient efficiencies (calculated as gain per unit of nutrient consumed) for fat, nitrogen and gross energy linearly decreased (P<0.001). A linear decrease in heat production and the respiratory exchange ratio (CO2/O2) were found with increasing diet density (P<0.001). Protein intake and total energy, fat and protein retention were not affected by diet density. To conclude: increased diet density during the first week of age resulted in improved feed efficiency, but not nutrient efficiency. Protein and fat deposition in the body of broilers was similar.
Original languageEnglish
Title of host publicationEnergy and protein metabolism and nutrition
Subtitle of host publication5th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Krakow, Poland, 12-15 September 2016
EditorsJacek Skomiał, Hélène Lapierre
Place of PublicationWageningen
PublisherWageningen Academic Publishers
Pages305-306
ISBN (Electronic)9789086868322
ISBN (Print)9789086862863
Publication statusPublished - 2016
Event5th EAAP International Symposium on Energy and Protein Metabolism - Krakow, Krakow, Poland
Duration: 12 Sep 201615 Sep 2016

Publication series

NameEAAP publication
PublisherWageningen Academic Publishers
Number137
ISSN (Print)0071-2477

Conference

Conference5th EAAP International Symposium on Energy and Protein Metabolism
CountryPoland
CityKrakow
Period12/09/1615/09/16

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  • Activities

    • 1 Participation in or organising a conference

    5th EAAP International Symposium on Energy and Protein Metabolism

    David Lamot (Speaker)
    2016

    Activity: Participating in or organising an eventParticipation in or organising a conference

    Cite this

    Lamot, D. M., Sapkota, D., Wijtten, P. J. A., van den Anker-Hensen, I., Heetkamp, M. J. W., Kemp, B., & van den Brand, H. (2016). Effects of increased diet density through increased dietary fat level on energy balance characteristics of broilers during the first week of life. In J. Skomiał, & H. Lapierre (Eds.), Energy and protein metabolism and nutrition: 5th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Krakow, Poland, 12-15 September 2016 (pp. 305-306). (EAAP publication; No. 137). Wageningen: Wageningen Academic Publishers.