Amino acid supplementation of low-protein sorghum-soybean meal diets for 5- to 20-kilogram swine.

@article{Hansen1993AminoAS,
  title={Amino acid supplementation of low-protein sorghum-soybean meal diets for 5- to 20-kilogram swine.},
  author={J. A. Hansen and Darrell A. Knabe and K G Burgoon},
  journal={Journal of animal science},
  year={1993},
  volume={71 2},
  pages={
          452-8
        }
}
Four growth experiments were conducted to determine the value of added threonine (Thr), methionine (Met), tryptophan (Trp), and isoleucine (Ile) in low-protein, lysine (Lys)-fortified, sorghum-soybean meal diets for starting pigs weaned at 28 d. Trials lasted 28 d and average initial weight was approximately 6.5 kg. A 21% CP (1.15% total and .95% digestible Lys) diet was included in all trials. Basal 15, 17, and 19% CP diets were formulated to contain .95% digestible Lys by adding .38, .26, and… 

Sorghum amino acid-supplemented diets for the 50- to 100-kilogram pig.

Pigs fed LTMT or LTMT+N had reduced ADG, ADFI, serum urea N (SUN), pancreas weight, LMA, and percentage of muscling (PM) but higher dressing percentage (DP) and similar 10th rib fat thickness (TRF) than pigs fed S-SBM.

Maximizing the use of supplemental amino acids in corn-soybean meal diets for 20- to 45-kilogram pigs.

The results of this research indicate that the Lys requirement for 20- to 45-kg pigs is 0.83% SID Lys, up to 0.23% supplemental Lys can be added along with supplemental Thr, Trp, and Met without negatively affecting growth performance; PUN was linearly decreased (P < 0.001) by supplemental Lys.

Crystalline Amino Acid Supplementation of Grain Sorghum-Based Low Protein Diets for Growing-Finishing Pigs

Abstract Myer, R.O. and Gorbet, D.W. 2004. Crystalline amino acid supplementation of grain sorghum-based low protein diets for growing-finishing pigs. J. Appl. Anim. Res., 25: 85–90. A study was

Nitrogen metabolism and growth performance of gilts fed standard corn-soybean meal diets or low-crude protein, amino acid-supplemented diets.

It is suggested that N balance is more sensitive than growth to amino acid adequacy and that other AA (e.g., isoleucine and valine) may limit growth performance when the protein concentration is reduced by more than four percentage units.

Estimation of the Optimal Ratio of Standardized Ileal Digestible Threonine to Lysine for Finishing Barrows Fed Low Crude Protein Diets

Based on the estimates obtained from the broken-line and quadratic analysis, it was concluded that the dietary SID Lys requirement for both maximum weight gain and minimum FCR was 0.75%, and an optimum SID Thr to Lys ratio was0.75.

Effects of Supplemental Synthetic Amino Acids to the Low Protein Diets on the Performance of Growing Pigs

A total of 120 pigs (L x LW x D) averaged 14.16 kg of body weight were reared under six dietary treatments to evaluate the effects of amino acid supplementation on their performances. Treatments were

Crystalline lysine and threonine supplementation of soft red winter wheat or triticale, low-protein diets for growing-finishing swine.

Five trials, with five treatments each, involving a total of 240 pigs were conducted to evaluate the effectiveness of supplementation of soft red winter wheat- or triticale-based diets with

Performance responses and indicators of gastrointestinal health in early-weaned pigs fed low-protein amino acid-supplemented diets.

The results show that piglet performance may suffer when dietary CP is reduced by 4 or more percentage units from 23% and support the hypothesis that low-CP diets help maintain enteric health in pigs by lowering toxic microbial metabolites such as ammonia.

Low-protein diet improves meat quality of growing and finishing pigs through changing lipid metabolism, fiber characteristics, and free amino acid profile of the muscle.

The results indicate that low-protein diets could positively affect meat quality of growing and finishing pigs, and likely through regulation of IMF content and fatty acid composition, fiber characteristics, and free AA profile in the muscle.
...

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