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Some Effects of Protein Deficiency in Young Growing Pigs. II. Blood Plasma Free Amino Acids
Acta Veterinaria Scandinavica volume 11, pages 1–15 (1970)
Summary
The influence of protein deficiency, rehabilitation and total starvation on the free amino acid levels in the blood plasma of pigs has been investigated. It was found that the concentration of most amino acids was reduced during protein deficiency. The levels of leucine, isoleucine and valine were diminished by the greatest proportion, followed by threonine, tyrosine and citrulline. During the first few weeks of protein deficiency the levels of lysine, histidine and arginine were slightly increased, but later decreased below control values. Concentrations of glycine and alanine were altered in a similar way except that the initial increase was much more pronounced. The concentrations of most of these amino acids returned to control levels after rehabilitation. Total starvation led to an increase in concentration of leucine, isoleucine, valine, threonine and to a smaller extent phenylalanine, lysine, citrulline and arginine. The concentration of glycine, alanine and glutamic acid were very much reduced. The level of urea in the circulation dropped reversibly during protein deficiency and increased very much during total starvation.
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Acknowledgment
The authors wish to thank Professor J. Moustgaard, Royal Veterinary and Agricultural University, Copenhagen, Denmark, for advice and helpful discussions and Zdenka Boban for skilled technical assistance.
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Cuperlovié, M., Stosié, D. Some Effects of Protein Deficiency in Young Growing Pigs. II. Blood Plasma Free Amino Acids. Acta Vet Scand 11, 1–15 (1970). https://doi.org/10.1186/BF03547999
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DOI: https://doi.org/10.1186/BF03547999