J. Anim Sci.
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J. Anim Sci. 1971. 33:30-34.
© 1971 American Society of Animal Science
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Effect of Lactation Feeding Level of the Sow on Performance and Subsequent Reproduction1

J. P. Hitchcock, G. W. Sherritt, J. L. Gobble and V. E. Hazlett

The Pennsylvania State University, University Park 16802

Abstract

In recent years increased emphasis has been placed on determining the optimun feed intake for swine during gestation. However, the optimal level of feeding during lactation has received little attention during this period. For many years the most common recommendation has been to feed sows ad libitum during lactation to permit maximum milk production. However, Bowland (1964a, b) reported that energy and protein intakes lower than recommended by the National Research Council (1959) were adequate for good reproductive performance.

Duncan and Lodge (1960) reviewed the recommended allowances for feeding of brood sows, but concluded that it was difficult to compare the standards of different systems.

The need for further research to determine the optimal feeding levels for breeding stock has been suggested by Stevenson and Ellis (1957); Carroll, Krider and Andrews (1962); Clawson (1965); Parker and Clawson (1967) and The Agricultural Research Council of Great Britain (1967).

This study was conducted to investigate the effects of limiting feed intake of the lactating dam to 0.45 kg per pig nursing per day vs. feeding dams ad libitum during lactation on production as measured by number and weights of pigs, feed requirements in terms of sow and creep feed per pig weaned and subsequent reproductive performance.

Footnotes

1 Approved for publication by the Director, Pennsylvania Agricultural Experiment Station, Paper No. 3849 of the Journal Series.






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Copyright © 1971 by the American Society of Animal Science.