TY - JOUR
T1 - Heat production and lipid metabolism in broiler and layer chickens during embryonic development
AU - Sato, Momoka
AU - Tachibana, Tetsuya
AU - Furuse, Mitsuhiro
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from Japan Society for the Promotion of Science (No. 16380191 and 17208023). The authors are grateful to Dr. D.M. Denbow, Virginia Polytechnic Institute and State University, USA, for his reading of the manuscript.
PY - 2006/3
Y1 - 2006/3
N2 - We compared heat production (HP) and lipid metabolism in broiler and layer chickens (Gallus gallus) during embryonic development. To investigate HP and respiratory quotient (RQ), oxygen (O2) consumption and carbon dioxide (CO2) production were measured using an open-circuit calorimeter system. HP consistently had a tendency (P = 0.06) to be lower in broilers than in layers during embryonic development, and HP gradually decreased with developmental stage in both strains. RQ values of both strains were approximately 0.7 at every embryonic stage investigated. These results suggest that chicken embryos mainly use lipid for energy, and the RQ was significantly lower in broilers than in layers during embryonic development. Consumption of the yolk sac as a lipid source was faster in broilers than in layers. Plasma D-3-hydroxybutyrate (D3HB) and glycerol concentrations, associated with fatty acid oxidation, were lower in broiler than layer embryos. These results demonstrate that HP and lipid metabolism are different between the strains during embryonic development, and may be one factor for the growth difference between broiler and layer embryos.
AB - We compared heat production (HP) and lipid metabolism in broiler and layer chickens (Gallus gallus) during embryonic development. To investigate HP and respiratory quotient (RQ), oxygen (O2) consumption and carbon dioxide (CO2) production were measured using an open-circuit calorimeter system. HP consistently had a tendency (P = 0.06) to be lower in broilers than in layers during embryonic development, and HP gradually decreased with developmental stage in both strains. RQ values of both strains were approximately 0.7 at every embryonic stage investigated. These results suggest that chicken embryos mainly use lipid for energy, and the RQ was significantly lower in broilers than in layers during embryonic development. Consumption of the yolk sac as a lipid source was faster in broilers than in layers. Plasma D-3-hydroxybutyrate (D3HB) and glycerol concentrations, associated with fatty acid oxidation, were lower in broiler than layer embryos. These results demonstrate that HP and lipid metabolism are different between the strains during embryonic development, and may be one factor for the growth difference between broiler and layer embryos.
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U2 - 10.1016/j.cbpa.2005.12.019
DO - 10.1016/j.cbpa.2005.12.019
M3 - Article
C2 - 16460976
AN - SCOPUS:33344473036
SN - 1095-6433
VL - 143
SP - 382
EP - 388
JO - Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
JF - Comparative Biochemistry and Physiology - A Molecular and Integrative Physiology
IS - 3
ER -