TY  - JOUR
T1  - The Near to Linear Allometric Relationship Between the Total Metabolic Energy per Life Span and the Body Mass of Aves
AU - , Atanas Todorov Atanasov 
JO  - Journal of Animal and Veterinary Advances
VL  - 7
IS  - 4
SP  - 425
EP  - 432
PY  - 2008
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2008.425.432
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2008.425.432
KW  - Aves
KW  -basal metabolic rate
KW  -lifespan
KW  -total metabolic energy
AB  - The aim of this study is to establish and calculate the allometric relationship between the total metabolic energy per life span and the body mass in Passerine and Nonpasserine birds for maximum and life span in captivity. The study shows that it exists near to linear relationship between the total metabolic energy per life span PTls (kJ) and the body mass M (kg) of birds from the type: PT<SUB>ls</SUB>= A<SUP>0</SUP><SUB>ls</SUB>M<SUP>k</SUP>, where P (kJ day <SUP>1</SUP>) is the basal metabolic rate, Tls (day) is the life span (maximum or life span in captivity) and A<SUP>0</SUP><SUB>ls</SUB> (kJ kg <SUP>1</SUP>) is the total metabolic  energy,  exhausted  during  the  life  span  per  1 kg body mass of birds. The received results show that for all birds, the power coefficient (k) in the `lifespan metabolism-mass` relationship fall in the interval 0.8776-0.934 (for maximum and life span in captivity). For maximum life span the power coefficient k for all birds is 0.904 (R<SUP>2 </SUP>= 0.976) and separately for Passerine it is 0.935 (R<SUP>2</SUP> = 0.987), for Nonpasserine it is 0.926 (R<SUP>2</SUP> = 0.98). The linear coefficient A<SUP>0</SUP><SUB>ls</SUB> for all birds is 26.866×10<SUP>5</SUP>  kJ kg <SUP>1</SUP> and separately for Passerine it is 36,728×10<SUP>5</SUP>  kJ kg <SUP>1</SUP>, for Nonpasserine it is 25.199×10<SUP>5</SUP>  kJ kg <SUP>1</SUP> . Possibly, the linearity between lifespan metabolic energy and body mass expresses a general allometric law in animal energetics, since it is valid for Poikilothetms, Mammals and approximately for Aves.
ER  -