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The effect of gestation feeding strategy on body composition of gilts at farrowing and response to dietary protein in lactation

Published online by Cambridge University Press:  20 November 2017

A.G. Sinclair ,
V.C. Bland  and
S.A. Edwards
A.G. Sinclair
Affiliation:
Scottish Agricultural College, Craibstone Estate, Bucksburn, Aberdeen, UK, AB21 9YA.
V.C. Bland
Affiliation:
Scottish Agricultural College, Craibstone Estate, Bucksburn, Aberdeen, UK, AB21 9YA.
S.A. Edwards
Affiliation:
Scottish Agricultural College, Craibstone Estate, Bucksburn, Aberdeen, UK, AB21 9YA.
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Extract

Previous experiments (Sinclair et al., 1998) have indicated that reproductive function in lean modern genotypes may be more dependent on body protein mass than, as previously believed, on body lipid reserves. Related work (Sinclair et al., 1996) also indicated that lean genotypes of sows are particularly sensitive to dietary protein restriction during lactation. This experiment was designed to achieve differential body reserves of protein and fat at farrowing by different feeding strategies during pregnancy, and to measure the interactive effect of dietary protein during lactation on subsequent nutrient partitioning.

A 3x2 factorial experiment involving 60 first parity sows compared 3 different pregnancy feeding strategies and 2 lactation diets. During pregnancy, sows were fed, from day 42, either a set quantity (mean of 2.27 kg/day) of basal diet (5g lysine/kg, 13 MJ DE/kg [C]), or basal diet + energy (maize starch + soya oil in 3:1 ratio [E]), or additional basal diet supplying both protein and energy [P].

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Information
Proceedings of the British Society of Animal Science , Volume 1999 , 1999 , pp. 174
Copyright
Copyright © The British Society of Animal Science 1999

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References

Sinclair, A.G., Edwards, S.A, Hoste, S., McCartney, A. and Fowler, V.R. 1996. Partitioning of dietary protein in the Meishan synthetic and the European White breeds of pig during lactation. Animal Science 62: 355–362.CrossRefGoogle Scholar
Sinclair, A.G., Cia, M.C., Edwards, S.A. and Hoste, S. 1998. Response to dietary protein during lactation of Meishan synthetic, Large White and Landrace gilts given food to achieve the same target backfat level at farrowing. Animal Science 67: 349–354.CrossRefGoogle Scholar