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Weight changes in sows during pregnancy and lactation

Published online by Cambridge University Press:  01 October 1961

G. A. Lodge,
I. McDonald and
R. M. MacPherson
G. A. Lodge
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
I. McDonald
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
R. M. MacPherson
Affiliation:
Rowett Research Institute, Bucksburn, Aberdeen
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Extract

Results are presented on weight changes in sows which indicate (1) that checks to increases in weight at specific stages appear to be a normal function of pregnancy in sows, (2) that most of the weight gained during pregnancy in excess of that accounted for by the litter and placenta is lost before the next pregnancy, either during lactation or, if this is prevented, immediately after weaning, (3) that considerable weight loss occurs between weaning and re-mating on a level of feeding which is sufficient to allow a mean gain of 1 lb. per day during pregnancy, and (4) that sows given a relatively low level of total feed during lactation appear to lose considerably less weight between weaning and re-mating, and to gain weight more rapidly during the first few weeks of pregnancy, than those fed to a relatively high level during lactation. Practical implications of these results are considered.

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Type
Research Article
Information
Animal Production , Volume 3 , Issue 3 , October 1961, pp. 269 - 275
Copyright
Copyright © British Society of Animal Science 1961

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References

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