title: Protein feeding and balancing for amino acids in lactating dairy cattle.
abstract: This article summarizes the current literature as regards metabolizable protein (MP) and essential amino acid (EAA) nutrition of dairy cattle. Emphasis has been placed on research since the publication of the National Research Council Nutrient Requirements of Dairy Cattle, Seventh Revised Edition (2001). Postruminal metabolism of EAA is discussed in terms of the effect on requirements. This article suggests methods for practical application of MP and EAA balance in milking dairy cows.
authors.affiliation: Nittany Dairy Nutrition Incorporated, 9355 Buffalo Road, Mifflinburg, PA 17844, USA. Electronic address: nittnut@aol.com.
authors.forename: Robert A
authors.initials: RA
authors.lastname: Patton
authors.affiliation: Department of Animal Science, Pennsylvania State University, 324 Henning Building, University Park, PA 16802, USA.
authors.forename: Alexander N
authors.initials: AN
authors.lastname: Hristov
authors.affiliation: Dairy and Swine Research and Development Centre, Agriculture and Agri-Food Canada, 2000 College Street, Sherbrooke, Québec J1M 0C8, Canada.
authors.forename: Hélène
authors.initials: H
authors.lastname: Lapierre
mesh_terms: D000596:Amino Acids / Q000008:administration & dosage* / Q000493:pharmacokinetics; D000821:Animal Feed / Q000032:analysis / Q000592:standards; D000822:Animal Husbandry / Q000379:methods*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002417:Cattle / Q000378:metabolism / Q000502:physiology*; D003612:Dairying / Q000379:methods*; D004044:Dietary Proteins / Q000008:administration & dosage* / Q000493:pharmacokinetics; D005260:Female; D007774:Lactation / Q000502:physiology*
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins
keywords: Amino acids; Lactation; Limiting AA; Metabolizable protein; Microbial protein