Protein and energy metabolism in two lines of chickens selected for growth on high or low protein diets
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Protein and energy metabolism in two lines of chickens selected for growth on high or low protein diets. / Chwalibog, André; Eggum, B O; Sørensen, Peter.
I: British Poultry Science, Bind 24, Nr. 2, 04.1983, s. 237-50.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Protein and energy metabolism in two lines of chickens selected for growth on high or low protein diets
AU - Chwalibog, André
AU - Eggum, B O
AU - Sørensen, Peter
PY - 1983/4
Y1 - 1983/4
N2 - 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.
AB - 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.
KW - Animals
KW - Body Weight
KW - Chickens
KW - Diet
KW - Dietary Proteins
KW - Energy Metabolism
KW - Male
KW - Nitrogen
KW - Proteins
U2 - 10.1080/00071668308416735
DO - 10.1080/00071668308416735
M3 - Journal article
C2 - 6883153
VL - 24
SP - 237
EP - 250
JO - British Poultry Science
JF - British Poultry Science
SN - 0007-1668
IS - 2
ER -
ID: 44504362