J. Anim Sci.
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Journal of Animal Science, Vol 72, Issue 3 638-647, Copyright © 1994 by American Society of Animal Science

JOURNAL ARTICLE

Low-protein, crystalline amino acid-supplemented, sorghum-soybean meal diets for the 10- to 20-kilogram pig

A. B. Brudevold and L. L. Southern
Department of Animal Science, Louisiana State University Agricultural Center, Baton Rouge 70803.

Five randomized block design experiments were conducted to determine the limiting amino acids (or other nutrients) in low-CP (12%) sorghum-soybean meal (S-SBM) diets for the 10- to 20-kg pig. Average initial weights were 10.7, 10.5, 9.1, 10.2, and 10.9 kg in Exp. 1, 2, 3, 4, and 5, respectively. The nine treatments in Exp. 1 were 1) Basal (B, 12% CP), 2) B + .26% methionine (Met), 3) B + .24% histidine (His), 4) B + .21% isoleucine (Ile), 5) B + .12% tryptophan (Trp), 6) B + .24% valine (Val), 7) B+Met+His, 8) B+Met+His+Ile+Trp+Val (AllAA), and 9) S-SBM positive control (PC, 21.81% CP). All diets provided 1.10% Lys and .83% Thr. Individual addition of His and Val to the B diet increased (P < .10) gain. The gain of pigs fed the AllAA diet did not differ (P > .10) from that of pigs fed the PC diet. Experiment 2 consisted of the nine treatments used in Exp. 1, except that Treatment 7 in Exp. 2 contained His+Val (H+V) rather than Met+His. Individual additions of Ile, Trp, and H+V increased (P < .10) gain/feed compared with the B diet. Performance of pigs fed the AllAA diet was not different (P > .10) from that of pigs fed the PC diet. Addition of NaHCO3 (Exp. 3), Phe (Exp. 4), or nonessential N (Exp. 5) to the AllAA diet did not affect (P > .10) pig performance compared with pigs fed the AllAA diet. However, in Exp. 3, pigs fed the PC diet grew faster (P < .03) and had greater (P < .10) apparent N digestibilities than pigs fed the AllAA diet. In summary, low-CP, S-SBM diets may be equally third limiting in His, Ile, Trp, and Val for the 10- to 20-kg pig.


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J. L. Figueroa, A. J. Lewis, P. S. Miller, R. L. Fischer, and R. M. Diedrichsen
Growth, carcass traits, and plasma amino acid concentrations of gilts fed low-protein diets supplemented with amino acids including histidine, isoleucine, and valine
J Anim Sci, June 1, 2003; 81(6): 1529 - 1537.
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Copyright © 1994 by the American Society of Animal Science.