Journal of Animal Science, Vol 72, Issue 7 1744-1753, Copyright © 1994 by American Society of Animal Science

JOURNAL ARTICLE

Digestible lysine requirement of gilts with high genetic potential for lean gain, in relation to the level of energy intake

P. Bikker, M. W. Verstegen, R. G. Campbell and B. Kemp
Department of Animal Nutrition, Agricultural University, Wageningen, The Netherlands.

One hundred gilts were used to determine the optimal ratio between ileal digestible lysine and digestible energy in the diet, and the effect of energy intake level on this optimal ratio for gilts with high genetic potential for lean gain, between 20 and 45 kg BW. In a 2 x 15 factorial arrangement the pigs were fed either 2.5 or 3.0 times the energy requirements for maintenance. Average daily lysine intake in the treatment period ranged from 6.4 to 18.2 g/d in 15 graduated steps. The first 12 increments were .74 g/d, and the last two increments were 1.48 g/d. Average daily gain (ADG), gain/feed, and protein deposition increased curvilinearly (P < .01) with increasing lysine intake. The ADG was maximized at 606 and 768 g/d, gain/feed was maximized at .564 and .604 kg/kg, and protein deposition was maximized at 108 and 128 g/d at the low- and high-energy levels, respectively. The ratio between lipid and protein deposition decreased curvilinearly with increasing lysine intake (P < .01) and reached a minimum of .53 and .75 at the low- and high-energy levels, respectively. The lysine requirements (ileal digestible lysine/DE, grams/megaJoule), determined with a linear-plateau model, were .57 for ADG and gain/feed, and .62 for protein deposition. These estimated requirements were similar for the two energy levels. Consequently, approximately .60 g of ileal digestible lysine/MJ of DE was required to optimize performance in gilts with high genetic potential for lean gain, irrespective of the feed intake level. In addition, a factorial model to estimate the lysine/energy requirements is proposed.

This article has been cited by other articles:

				M. G. Rivera-Ferre, J. F. Aguilera, and R. Nieto Differences in whole-body protein turnover between Iberian and Landrace pigs fed adequate or lysine-deficient diets J Anim Sci, December 1, 2006; 84(12): 3346 - 3355. [Abstract] [Full Text] [PDF]

				S. Moehn, R. O. Ball, M. F. Fuller, A. M. Gillis, and C. F. M. de Lange Growth Potential, but Not Body Weight or Moderate Limitation of Lysine Intake, Affects Inevitable Lysine Catabolism in Growing Pigs J. Nutr., September 1, 2004; 134(9): 2287 - 2292. [Abstract] [Full Text] [PDF]

				S. Mohn, M. F. Fuller, R. O. Ball, and C. F. M. de Lange Feeding Frequency and Type of Isotope Tracer Do Not Affect Direct Estimates of Lysine Oxidation in Growing Pigs J. Nutr., November 1, 2003; 133(11): 3504 - 3508. [Abstract] [Full Text] [PDF]

				W. Urynek and L. Buraczewska Effect of dietary energy concentration and apparent ileal digestible lysine:metabolizable energy ratio on nitrogen balance and growth performance of young pigs J Anim Sci, May 1, 2003; 81(5): 1227 - 1236. [Abstract] [Full Text] [PDF]

				C. P. A. Van de Ligt, M. D. Lindemann, and G. L. Cromwell Assessment of chromium tripicolinate supplementation and dietary protein level on growth, carcass, and blood criteria in growing pigs J Anim Sci, September 1, 2002; 80(9): 2412 - 2419. [Abstract] [Full Text] [PDF]

				W. J. J. Gerrits, J. W. Schrama, and S. Tamminga The Marginal Efficiency of Utilization of All Ileal Digestible Indispensable Amino Acids for Protein Gain Is Lower than 30% in Preruminant Calves between 80 and 240 kg Live Weight J. Nutr., October 1, 1998; 128(10): 1774 - 1785. [Abstract] [Full Text]

				J. C. MacRae, L. A. Bruce, D. S. Brown, and A. G. Calder Amino acid use by the gastrointestinal tract of sheep given lucerne forage Am J Physiol Gastrointest Liver Physiol, December 1, 1997; 273(6): G1200 - G1207. [Abstract] [Full Text] [PDF]