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The energy costs of walking on the level and on negative and positive slopes in the Granadina goat (Capra hircus)

Published online by Cambridge University Press:  07 September 2009

M. Lachica ,
C. Prieto  and
J. F. Aguilera
M. Lachica
Affiliation:
Animal Nutrition Department, Estación Experimental del Zaidín (CSIC), Profesor Albareda, 1. 18008 Granada, Spain
C. Prieto
Affiliation:
Animal Nutrition Department, Estación Experimental del Zaidín (CSIC), Profesor Albareda, 1. 18008 Granada, Spain
J. F. Aguilera
Affiliation:
Animal Nutrition Department, Estación Experimental del Zaidín (CSIC), Profesor Albareda, 1. 18008 Granada, Spain
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Abstract

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The energy expenditure of six goats averaging 35 (SE 0·3) kg was measured when the animals were standing or walking on a treadmill enclosed in a confinement-type respiration chamber at different speeds (0·167, 0·333 and 0·500 m/s) and slopes ( — 10, — 5, 0, +5 and +10%). The energy costs of locomotion, estimated from the coefficients of linear regressions of heat production (HP) per kg body weight v. distance travelled were 1·91, 2·33, 3·35, 4·68 and 6·44 J/kg BW per m for — 10, — 5, 0, +5 and +10% inclines respectively, indicating that the energy expenditure of walking over standing changes with slope according to a slightly curvilinear relationship. The energy cost of raising 1 kg body weight one vertical metre was found to be 31·7 J, giving an average efficiency for upslope locomotion of 30·9%. The energy recovered on vertical descent was estimated as 13·2 J/kg per m, indicating an efficiency of the energy recovered above the theoretical maximum.

Keywords

GoatLocomotionEnergy cost
Type
Animal Nutrition
Information
British Journal of Nutrition , Volume 77 , Issue 1 , January 1997 , pp. 73 - 81
Copyright
Copyright © The Nutrition Society 1997

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