Do breeds of pig differ in the efficiency with which they use a limiting protein supply?

The British Journal of Nutrition
I Kyriazakis, G C Emmans

Abstract

An experiment was designed to test the prediction that two genetically-very-different kinds of pigs would retain the same amounts of protein in their bodies when given the same allowances of the same feed for the same period of time, when these allowances were limiting for both. An allowance of 33.957 kg of a feed with 12.76 MJ metabolizable energy (ME) and 189 g crude protein (N x 6.25)/kg feed was given to Large White x Landrace (LW x) and Chinese Meishan (CM) female pigs over three different periods of time: (1) ad lib. (AL) with the time taken by individual pigs to consume the allowance being a variable, (2) over a period of 7 weeks (H) and (3) over a period of 9 weeks (L). In addition, in a fourth treatment, pigs of both breeds received the same allowance but supplemented with starch also over a period of 7 weeks (HS). The performance of the pigs on treatment AL was affected by pig breed, with CM pigs gaining protein at a slower, and lipid at a faster, rate than LW x pigs. On treatments L, H and HS the average amounts of protein retained were 2.693 and 2.655 kg for the LW x (n 15) and CM (n 15) pigs respectively (SED 0.106 kg). There was a statistical indication that the LW x pigs may have been more efficient on L, and les...Continue Reading

References

Oct 1, 1982·Chemistry and Physics of Lipids·G V Marinetti, K Cattieu
Sep 22, 1994·Toxicology·F VerdierJ Descotes
May 1, 1993·The Journal of Nutrition·M F Fuller, P Garthwaite

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Citations

Mar 24, 2012·Animal : an International Journal of Animal Bioscience·I Kyriazakis
Jul 1, 1997·The Proceedings of the Nutrition Society·J D OldhamI Kyriazakis
Mar 22, 2014·Archives of Animal Nutrition·Maike Naatjes, Andreas Susenbeth
Mar 25, 2005·The British Journal of Nutrition·Fredrik B SandbergIlias Kyriazakis
May 3, 2013·PLoS Genetics·Samantha WilkinsonPamela Wiener
Feb 27, 2015·Asian-Australasian Journal of Animal Sciences·Jong-Hyun JungHo-Sung Choe

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