Serum amino acids

Gene expression, serum amino acid levels, and growth performance of pigs fed dietary leucine and lysine at different ratios

H. García, Morales, A., Araiza, A., Htoo, J. K., and Cervantes, M., Gene expression, serum amino acid levels, and growth performance of pigs fed dietary leucine and lysine at different ratios, vol. 14, pp. 1589-1601, 2015.

We examined 96 pigs (28.1 ± 0.83 kg) to analyze the effect of Leu:Lys ratios on expression of the cationic amino acid transporters b0,+ and CAT-1 in the jejunum and liver as well as myosin expression in 2 muscles to estimate the optimum standardized ileal digestible (SID) Leu:Lys ratio for growth rate and efficiency. A wheat-and wheat bran-based diets were formulated to meet the requirements of SID amino acids other than Leu (0.70%) and Lys (0.80%). L-Leu was added to the basal diet in 5 SID Leu:Lys ratios (88, 100, 120, 140, and 160% in diets 1-5).

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