title: The effect of dietary protein on reproduction in the mare. I. The composition and evaluation of the digestibility of dietary protein from different sources.
abstract: Four rations that differed in their crude protein and essential amino-acid content were compiled. Digestibility of the crude protein and essential amino-acid contents were determined biologically in a feeding trial using 4 Anglo-Arab stallions. Their respective daily diets were: Diet 1:2 kg cubes, 5 kg tef hay (Eragrostis tef); Diet 2:2 kg cubes, 5 kg lucerne hay (Medicago sativa); Diet 3:2 kg cubes, 5 kg tef hay, 200 g fishmeal; Diet 4:2 kg cubes, 5 kg lucerne hay, 200 g fishmeal. The concentrations of the amino-acids threonine, iso-leucine, leucine and arginine were increased in the total ration when lucerne hay replaced the tef hay while fishmeal supplementation increased the methionine and lysine contents, which provided a wide-range of concentrations of digestible amino-acids in each of the 4 rations.
authors.affiliation: Department of Human and Animal Physiology, University of Stellenbosch, Matieland, South Africa.
authors.forename: F E
authors.initials: FE
authors.lastname: van Niekerk
authors.forename: C H
authors.initials: CH
authors.lastname: van Niekerk
mesh_terms: D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001835:Body Weight; D004044:Dietary Proteins / Q000378:metabolism*; D004063:Digestion / Q000502:physiology; D005069:Evaluation Studies as Topic; D005260:Female; D006736:Horses / Q000502:physiology*; D008297:Male; D012098:Reproduction / Q000502:physiology*
chemical_list: D004044:Dietary Proteins