PMID: 15333718Aug 31, 2004Paper

Growth potential, but not body weight or moderate limitation of lysine intake, affects inevitable lysine catabolism in growing pigs

The Journal of Nutrition
Soenke MoehnC F M de Lange

Abstract

Inevitable catabolism contributes to the inefficiency of using dietary lysine intake for body protein deposition (PD). This study was conducted to determine the effects of true ileal digestible (TID) lysine intake, body weight (BW), and growth potential on lysine catabolism in growing pigs. Starting at 15 kg BW, 16 female Yorkshire pigs were offered a purified diet providing all nutrients in excess of requirements for maximum protein deposition (PDmax). At approximately 25 kg BW, the pigs' PDmax was determined using the N-balance method. Thereafter, 4 pigs were allocated to each of 4 diets, first-limiting in lysine, providing lysine intakes corresponding to 60, 70, 80, and 90% of estimated requirements for PDmax. The pigs were surgically fitted with catheters in the jugular and femoral veins. Lysine catabolism was determined at 2 BW (40-45 kg, low; 70-75 kg, high) either directly (oxidation) using a primed, constant infusion of l-[1-(14)C]-lysine or indirectly (disappearance) using the N-balance method. There was no effect of BW on the rate (g/d) or fraction of TID lysine intake catabolized. Lysine catabolism decreased with increasing growth potential. Lysine disappearance and lysine oxidation (% of TID lysine intake) were inde...Continue Reading

References

Jul 1, 1989·The British Journal of Nutrition·T C Wang, M F Fuller
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Citations

Jan 15, 2009·Journal of Animal Physiology and Animal Nutrition·J HegerD Hampel
Jan 11, 2008·Journal of Animal Physiology and Animal Nutrition·J HegerD Hampel
Jun 18, 2020·Animals : an Open Access Journal From MDPI·Pau AymerichDavid Solà-Oriol
Oct 27, 2017·Animal : an International Journal of Animal Bioscience·S MilletS De Campeneere
May 22, 2007·The Journal of Nutrition·Ronald O BallPaul B Pencharz

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