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Body composition of goat kids during sucking. Voluntary feed intake

Published online by Cambridge University Press:  09 March 2007

M. R. Sanz Sampelayo ,
I. Ruiz ,
F. Gil  and
J. Boza
M. R. Sanz Sampelayo
Affiliation:
Estación Experimental del Zaidin (Consejo Superior de Investigaciones Cientificas), Departamento de Fisiologia Animal, Profesor Albareda, 1, 18008 Granada, Spain
I. Ruiz
Affiliation:
Estación Experimental del Zaidin (Consejo Superior de Investigaciones Cientificas), Departamento de Fisiologia Animal, Profesor Albareda, 1, 18008 Granada, Spain
F. Gil
Affiliation:
Estación Experimental del Zaidin (Consejo Superior de Investigaciones Cientificas), Departamento de Fisiologia Animal, Profesor Albareda, 1, 18008 Granada, Spain
J. Boza
Affiliation:
Estación Experimental del Zaidin (Consejo Superior de Investigaciones Cientificas), Departamento de Fisiologia Animal, Profesor Albareda, 1, 18008 Granada, Spain
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Abstract

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The body composition of thirty-eight Granadina goat kids was measured. Six animals were slaughtered at birth while the remainder were kept individually at an environmental temperature of 24±2° and a relative humidity of 60±5%. They were given goat's milk or a milk-substitute at two planes of nutrition until 15 or 30 d of age and then slaughtered. The goat's milk and milk-substitute contained 260.4 and 222.0 g digestible protein/kg and 23.23 and 20.85 MJ metabolizable energy/kg respectively. Voluntary feed intake as metabolizable energy was a function of metabolic body-weight (kg W0.75), equivalent to 2.42 and 2.44 times the energy requirement for maintenance for goat's milk- and milk-substitute-fed animals respectively. There was a high degree of correlation between the empty-body concentration of dry matter, fat and energy and empty-body-weight (P < 0.001) or animal age (P < 0.001), and between body-weight and animal age (P < 0.001). The relationships between empty-body composition and empty-body-weight were independent of type of milk or plane of nutrition. In contrast relationships between empty-body composition or empty-body-weight and animal age were affected by the type of milk and, over all, by the plane of nutrition. All these results show that in these animals any body-weight will have a similar composition, but it will be reached earlier or later depending on dietary regimen and always with the limitation of voluntary intake.

Keywords

Goat kidsSucking periodBody composition
Type
Diet and Development
Information
British Journal of Nutrition , Volume 64 , Issue 3 , November 1990 , pp. 611 - 617
Copyright
Copyright © The Nutrition Society 1990

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