title: Changes induced in rat plasma composition by lactation.
abstract: Changes in rat plasma composition in post-partum period were studied from day 1 to post weaning recovery situation (day 40). Urea levels showed a significant increase at the peak of lactation, and glycerol levels showed a decrease towards late lactation. Changes in the plasma aminogram were more marked during the maximal intensity of lactation (days 10-20) and in postlactation. Low trypthophan levels were sustained throughout the lactation period. The combined amino acids showed significant increases on day 10 of lactation, and increases in non-essential and total amino acids in post-lactation (40 days). These results point towards increased amino-acid utilization during lactation.
mesh_terms: D020155:3-Hydroxybutyric Acid; D000090:Acetoacetates / Q000097:blood; D000596:Amino Acids / Q000097:blood; D000818:Animals; D001786:Blood Glucose / Q000032:analysis; D005260:Female; D005990:Glycerol / Q000097:blood; D006885:Hydroxybutyrates / Q000097:blood; D007773:Lactates / Q000097:blood; D007774:Lactation; D019344:Lactic Acid; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D014508:Urea / Q000097:blood
chemical_list: D000090:Acetoacetates; D000596:Amino Acids; D001786:Blood Glucose; D006885:Hydroxybutyrates; D007773:Lactates; D019344:Lactic Acid; C016635:acetoacetic acid; D014508:Urea; D005990:Glycerol; D020155:3-Hydroxybutyric Acid