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Efficiency of the utilization of the energy of food in piglets, after weaning

Published online by Cambridge University Press:  27 March 2009

G. Burlacu ,
G. Băia ,
Dumitra Ionilă ,
Doina Moisa ,
V. Taṣcenco ,
I. Viṣan  and
I. Stoica
G. Burlacu
Affiliation:
Institute of Animal Nutrition, Romania
G. Băia
Affiliation:
Institute of Animal Nutrition, Romania
Dumitra Ionilă
Affiliation:
Institute of Animal Nutrition, Romania
Doina Moisa
Affiliation:
Institute of Animal Nutrition, Romania
V. Taṣcenco
Affiliation:
Institute of Animal Nutrition, Romania
I. Viṣan
Affiliation:
Institute of Animal Nutrition, Romania
I. Stoica
Affiliation:
Institute of Animal Nutrition, Romania
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Summary

The efficiency of utilization of the energy of food by weaned pigs of the Large White breed was measured. Three diets based on maize (40–60%) had a metabolizable energy of 75·8±1·2% of the gross energy, and 78·2 ±3·4% of the metabolizable energy was present as net energy.

The maintenance requirement of metabolizable energy of pigs weighing 14·3 ± 2·1 kg was 143·6 kcal/kg°0·75/24 h (601 kJ/kg0·75/24 h).

The energy cost per g protein and fat synthesized by piglets was estimated to be 7·43 and 12·05 kcal (31·1 and 50·4 kJ) metabolizable energy, respectively.

Equations for calculation of metabolizable energy (Yl, kcal) and of the net energy (Y2, kcal), based on digested nutrients, were:

Y1 = 4·64×1 + 9·12×2 + 4·25×3'CV = ± 1·2%,

Y2 = 3·84×1 + 7·09×2 + 3·28×3'CV = ± 1·4%,

where X1 = g protein digested, X2 = g fat digested, X3= g carbohydrate digested (crude fibre × N-free extracts).

Type
Research Article
Information
The Journal of Agricultural Science , Volume 81 , Issue 2 , October 1973 , pp. 295 - 302
Copyright
Copyright © Cambridge University Press 1973

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