Protein and energy metabolism in two lines of chickens selected for growth on high or low protein diets

André Chwalibog, B O Eggum, Peter Sørensen

    9 Citationer (Scopus)

    Abstract

    Genetic adaptation was investigated in broilers selected for seven generations on a normal (A) or a low (B) protein diet. Protein and energy metabolism were studied in males from these selected lines fed on a diet of intermediate protein content. All selected birds retained more nitrogen than those studied 10 years previously. There was no difference in nitrogen retention between groups, although relative growth rate of group B birds was higher. Heat productions relative to gross energy intake were 0.38 (group B) and 0.45 (group A). Energy retentions relative to gross energy intake were 0.39 (group B) and 0.35 (group A); the difference being primarily due to higher fat retention in group B. Using a common maintenance requirement for metabolisable energy, group B utilised metabolisable energy for growth (0.78) better than did group A (0.71). At 53 d of age plasma glucose (10%) and insulin (50%) were higher in group B than in group A.
    OriginalsprogEngelsk
    TidsskriftBritish Poultry Science
    Vol/bind24
    Udgave nummer2
    Sider (fra-til)237-50
    Antal sider14
    ISSN0007-1668
    DOI
    StatusUdgivet - apr. 1983

    Fingeraftryk

    Dyk ned i forskningsemnerne om 'Protein and energy metabolism in two lines of chickens selected for growth on high or low protein diets'. Sammen danner de et unikt fingeraftryk.

    Citationsformater