-transparent.png){kind=logo}
Trials were conducted with four adult sheep of the Merino breed, live weight 45 to 50 kg, fed two diets with different nitrogen levels (7.6 g nitrogen per day as protein or 24 g nitrogen per day with an addition of 17.4 g urea nitrogen to 7.6 g nitrogen as protein). The following findings were obtained: the concentration of free amino acids in blood plasma in the 9th, 12th, 15th, 18th and 22nd weeks from the beginning of feeding with both diets was lower, in most of the analyzed amino acids, three hours after feeding than before feeding. The results show that at an increased intake of urea nitrogen the concentration increases of the free amino acids lysine, serine, glutamic acid, glycine, valine and isoleucine before feeding. Three hours after feeding these differences are less pronounced. An increase is only recorded in the concentration of arginine, glutamic acid and glycine, whereas the concentration of alanine decreases.
J Tomás, and
E Michnová
January 1977,
Acta physiologica Polonica,
J Tomás, and
E Michnová
May 1960,
Boletin de la Oficina Sanitaria Panamericana. Pan American Sanitary Bureau,
J Tomás, and
E Michnová
May 1966,
Die Naturwissenschaften,
J Tomás, and
E Michnová
August 1961,
Klinische Wochenschrift,
J Tomás, and
E Michnová
February 1981,
Gaceta medica de Mexico,
J Tomás, and
E Michnová
February 1949,
The Journal of biological chemistry,
J Tomás, and
E Michnová
December 1954,
The Journal of biological chemistry,
J Tomás, and
E Michnová
July 1968,
Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.),
J Tomás, and
E Michnová
February 1969,
The Biochemical journal,
J Tomás, and
E Michnová
January 1973,
Laboratornoe delo,
