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Blood metabolite profiles of broodmares and foals
Author(s) -
ROGERS PAULA A.,
FAHEY G. C.,
ALBERT W. W.
Publication year - 1984
Publication title -
equine veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 87
eISSN - 2042-3306
pISSN - 0425-1644
DOI - 10.1111/j.2042-3306.1984.tb01902.x
Subject(s) - taurine , methionine , glutamine , amino acid , asparagine , leucine , cystine , medicine , chemistry , endocrinology , creatinine , urea , histidine , arginine , metabolite , biochemistry , biology , cysteine , enzyme
Summary Serum amino acid profiles and other serum characteristics of broodmares and their foals were studied. Compared with mares, foals had significantly higher concentrations of serum leucine, threonine, aspartic acid, asparagine, glutamic acid, glutamine, proline and tyrosine, glucose, cholesterol, creatinine and phosphorus. Foals had significantly less serum histidine, glycine, cystine, taurine, protein and urea nitrogen. Lysine and/or methionine supplementation of pregnant and lactating broodmare diets was conducted. Changes in serum amino acid profiles caused by dietary amino acid supplementation were then quantified. Changes in concentrations of 19 amino acids as well as of ammonia occurred from the first bleeding period (12 weeks prepartum) to the second bleeding period (seven weeks prepartum) in mares supplemented with methionine. When blood samples were collected at 2 h intervals post feeding, after a preliminary rise, a large decrease in serum amino acid levels occurred over a 19 h post feeding period.