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Effect of pattern of energy intake during pregnancy and lactation on sow performance and productivity

Published online by Cambridge University Press:  21 November 2017

Pauline A. Lee  and
W.H. Close
Pauline A. Lee
Affiliation:
Animal and Grassland Research Institute, Church Lane, Shinfield, Reading RG2 9AQ
W.H. Close
Affiliation:
Animal and Grassland Research Institute, Church Lane, Shinfield, Reading RG2 9AQ
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Extract

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 an MEm value of 439 KJ ME/kg0.75, have therefore been calculated and the present experiment was designed to test these new estimates. An additional feature of the experiment is to determine whether variations in feed intake during lactation have an effect on the utilization of energy in subsequent pregnancies for maternal body weight gain. Since the experiment will be conducted over 4 parities it will be interesting to determine whether variations in feed intake during both pregnancy and lactation influence short- and long-term sow performance.

Type
Pig Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1986 , March 1986 , pp. 17
Copyright
Copyright © The British Society of Animal Production 1986

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