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The influence of energy Intake during pregnancy and lactation on weight and backfat change of the sow and on piglet performance

Published online by Cambridge University Press:  22 November 2017

Pauline A. Lee  and
W.H. Close
Pauline A. Lee
Affiliation:
AFRC Institute of Grassland and Animal Production, Church Lane, Shinfield, Reading, Berks, RG6 2AQ
W.H. Close
Affiliation:
AFRC Institute of Grassland and Animal Production, Church Lane, Shinfield, Reading, Berks, RG6 2AQ
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Extract

The present experiment has been designed to investigate the influence of variations in energy intake during both pregnancy and lactation on short- and long-term sow and litter performance. There is now sufficient evidence to suggest that the ARC (1981) factorial estimates of the energy requirements of the sow during pregnancy are too high, due, possibly, to an over-estimation of the maintenance energy component (MEm). Revised values, based on a constant ME value throughout psregnancy of 439 kJ ME/kg0.75 per day, have therefore been calculated and applied in the present experiment. An additional feature of the experiment is to provide information on the effect of lactation feed intake on the utilization of energy in subsequent pregnancies for maternal body weight gain.

Type
Sow Nutrition
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1988 , March 1988 , pp. 125
Copyright
Copyright © The British Society of Animal Production 1988

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